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Wednesday, January 31, 2018

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Mount Sharp 'Photobombs' Mars Curiosity Rover

DAY IN REVIEW
NASA JPL latest news release
Mount Sharp 'Photobombs' Mars Curiosity Rover

A new self-portrait of NASA's Curiosity Mars rover shows the vehicle on Vera Rubin Ridge, which it has been investigating for the past several months. Directly behind the rover is the start of a clay-rich slope scientists are eager to begin exploring. In coming weeks, Curiosity will begin to climb this slope. In the image, north is on the left and west is on the right, with Gale Crater's rim on the horizon of both edges.

Poking up just behind Curiosity's mast is Mount Sharp, photobombing the robot's selfie. When Curiosity landed on Mars five years ago, the team's intention was to study lower Mount Sharp, where the rover will remain for all of its time on Mars. The mountain's base provides access to layers formed over millions of years. These layers formed in the presence of water -- likely due to a lake or lakes where sediments accumulated, which formed these layers inside IGale Crater.

The mosaic was assembled from dozens of images taken by Curiosity's Mars Hands Lens Imager (MAHLI). They were all taken on Jan. 23, 2018, during Sol 1943.

For news about other Mars missions this month, view the first episode of a new video series, "The Mars Report."

https://www.youtube.com/watch?v=SWr6GoGaqdQ&list=PLTiv_XWHnOZpDDRIMGNxDTAORJVK2RS7I&index=1

Additonal information about NASA's exploration of Mars is at:

https://mars.nasa.gov/

This message was sent to chantybanty1.chanti@blogger.com from jplnewsroom@jpl.nasa.gov

NASA Jet Propulsion Laboratory
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109

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Tuesday, January 30, 2018

JPL News - Day in Review

 

DAY IN REVIEW
NASA JPL latest news release
Vista From Mars Rover Looks Back Over Journey So Far

A panoramic image that NASA's Curiosity Mars rover took from a mountainside ridge provides a sweeping vista of key sites visited since the rover's 2012 landing, and the towering surroundings.

The view from "Vera Rubin Ridge" on the north flank of Mount Sharp encompasses much of the 11-mile (18-kilometer) route the rover has driven from its 2012 landing site, all inside Gale Crater. One hill on the northern horizon is about 50 miles (about 85 kilometers) away, well outside of the crater, though most of the scene's horizon is the crater's northern rim, roughly one-third that distance away and 1.2 miles (2 kilometers) above the rover.

Curiosity's Mast Camera, or Mastcam, took the component images of the panorama three months ago while the rover paused on the northern edge of Vera Rubin Ridge. The mission has subsequently approached the southern edge of the ridge and examined several outcrop locations along the way.

Last week, the Curiosity team on Earth received copious new images from the rover through a record-setting relay by NASA's MAVEN orbiter -- surpassing a gigabit of data during a single relay session from Mars for the first time in history.

The team is preparing to resume use of Curiosity's drill for acquiring powdered rock samples to be analyzed by laboratory instruments inside the rover, more than a year after the most recent of the 15 times the drill has pulled sample material from Martian rocks.

Inside an Impact Crater

Mount Sharp stands in the middle of Gale Crater, which is 96 miles (154 kilometers) in diameter.

"Even though Curiosity has been steadily climbing for five years, this is the first time we could look back and see the whole mission laid out below us," said Curiosity Project Scientist Ashwin Vasavada of NASA's Jet Propulsion Laboratory, Pasadena, California. "From our perch on Vera Rubin Ridge, the vast plains of the crater floor stretch out to the spectacular mountain range that forms the northern rim of Gale Crater." The rover photographed the scene shortly before northern Mars' winter solstice, a season of clear skies, gaining a sharp view of distant details.

Curiosity's exact landing spot on the floor of the crater lies out of sight behind a slight rise, but the scene includes "Yellowknife Bay." That's where, in 2013, the mission found evidence of an ancient freshwater-lake environment that offered all of the basic chemical ingredients for microbial life. Farther north are the channel and fan of Peace Vallis, relics of the streams that carried water and sediment into the crater about three billion years ago.

Sites such as "Kimberley" and "Murray Buttes" along the rover's route are marked on an annotated posting of the panorama. The Mastcam recorded both a wider version of the scene (from southwest to northeast) with its left-eye, 34-millimeter-lens camera and a more detailed, narrower version with its right-eye, 100-millimeter-lens camera.

The site from which these images were taken sits 1,073 feet (327 meters) in elevation above Curiosity's landing site. Since leaving that site, the rover has climbed another 85 feet (26 meters) in elevation. In recent days, the Mastcam has recorded component images for a panorama looking uphill southward toward the mission's next major destination area. That is called the "Clay Unit" because observations from orbit detected clay minerals there.

Record Relay

The opportunity for some high-volume relay sessions with the MAVEN orbiter is helping the Curiosity team gain a bounty of images and other data this month.

Most data from Curiosity, through the years, have been relayed to Earth by NASA's Mars Reconnaissance Orbiter (MRO) and Mars Odyssey orbiter, which fly in nearly circular, nearly polar orbits predictably passing over Curiosity at about the same times every day. MAVEN, for Mars Atmosphere and Volatile Evolution, flies an elliptical orbit varying more than 40-fold from its nearest to farthest point from Mars. This suits MAVEN's science focus on Mars' atmosphere but results in variable coverage for relaying rover data. Usually, MAVEN passes over rover locations when the distance is too large for optimal relays. However, during occasional periods when the low point of its orbit is near Curiosity's location on Mars, the relays can serve exceedingly well.

"MAVEN definitely has the potential to move lots of data for us, and we expect to make even more use of it in the future," said JPL's Roy Gladden, manager of NASA's Mars Relay Network Office. The Jan. 22 relay of 1,006 megabits topped the previous record of 840 megabits, also set by MAVEN, but might in turn be bested by other favorable MAVEN relay opportunities in coming days.

The rover team intends to put Curiosity's drill to work on Vera Rubin Ridge before proceding to the Clay Unit. Resuming use of the drill requires an enterprising workaround for a mechanical problem that appeared in late 2016 and suspended use of the drill. A motor within the drill that advances the bit relative to stabilizer points no longer operates reliably.The workaround being evaluated thoroughly on a test rover at JPL does not use the stabilizer points. It moves the whole drill forward, with bit extended, by motion of the robotic arm.

 

This message was sent to chantybanty1.chanti@blogger.com from jplnewsroom@jpl.nasa.gov

NASA Jet Propulsion Laboratory
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109

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Monday, January 29, 2018

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Sunday, January 28, 2018

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Thursday, January 25, 2018

JPL News - Day in Review

 

DAY IN REVIEW
NASA JPL latest news release
NASA's Next Mars Lander Spreads its Solar Wings

NASA's next mission to Mars passed a key test Tuesday, extending the solar arrays that will power the InSight spacecraft once it lands on the Red Planet this November.

The test took place at Lockheed Martin Space just outside of Denver, where InSight was built and has been undergoing testing ahead of its launch. The mission is led by NASA's Jet Propulsion Laboratory in Pasadena, California.

"This is the last time we will see the spacecraft in landed configuration before it arrives at the Red Planet," said Scott Daniels, Lockheed Martin InSight Assembly, Test and Launch Operations (ATLO) Manager. "There are still many steps we have to take before launch, but this is a critical milestone before shipping to Vandenberg Air Force Base in California." The InSight launch window opens in May.

The fan-like solar panels are specially designed for Mars' weak sunlight, caused by the planet's distance from the Sun and its dusty, thin atmosphere. The panels will power InSight for at least one Martian year (two Earth years) for the first mission dedicated to studying Mars' deep interior. InSight's full name is Interior Exploration using Seismic Investigations, Geodesy and Heat Transport.

"Think of InSight as Mars' first health checkup in more than 4.5 billion years," said Bruce Banerdt of JPL, the mission's principal investigator. "We'll study its pulse by 'listening' for marsquakes with a seismometer. We'll take its temperature with a heat probe. And we'll check its reflexes with a radio experiment."

In addition to the solar panel test, engineers added a final touch: a microchip inscribed with more than 1.6 million names submitted by the public. It joins a chip containing almost 827,000 names that was glued to the top of InSight back in 2015, adding up to a total of about 2.4 million names going to Mars. "It's a fun way for the public to feel personally invested in the mission," Banerdt said. "We're happy to have them along for the ride."

The chips were inscribed at JPL's Microdevices Laboratory, which has added names and images to a number of spacecraft, including the Mars Spirit, Opportunity and Curiosity rovers. Each character on the InSight microchips is just 400 nanometers wide. Compare that to a human hair, 100,000 nanometers wide, or a red blood cell, 8,000 nanometers wide.

For more information on InSight, visit:

https://mars.nasa.gov/insight/

 

This message was sent to chantybanty1.chanti@blogger.com from jplnewsroom@jpl.nasa.gov

NASA Jet Propulsion Laboratory
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109

Wednesday, January 24, 2018

JPL News - Day in Review

 

DAY IN REVIEW
NASA JPL latest news release
NASA Covers Wildfires from Many Sources

NASA's satellite instruments are often the first to detect wildfires burning in remote regions, and the locations of new fires are sent directly to land managers worldwide within hours of the satellite overpass. Together, NASA instruments, including a number built and managed by NASA's Jet Propulsion Laboratory in Pasadena, California, detect actively burning fires, track the transport of smoke from fires, provide information for fire management, and map the extent of changes to ecosystems, based on the extent and severity of burn scars.

NASA has a fleet of Earth-observing instruments, many of which contribute to our understanding of fire in the Earth system. Satellites in orbit around the poles provide observations of the entire planet several times per day, whereas satellites in a geostationary orbit provide coarse-resolution imagery of fires, smoke and clouds every five to 15 minutes.

"NASA's satellite, airborne and field research capture the full impact of fires in the Earth system, from rapid detection of actively burning fires, transport of smoke and changes in ecosystems in the days to decades following fire," said Doug Morton, a research scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Sharing Data with Partners

Much of the remote-sensing data that NASA collects on wildfires is quickly put to work in aiding disaster response efforts around the world. The NASA Earth Science Disasters Program supports this application science and mobilizes for global intensive risk events that span a range of natural hazards -- not only wildfires but earthquakes, tsunamis, floods, landslides, severe weather, winter storms, tropical cyclones and volcanoes. Over the last two years, NASA's Disasters Program has ramped up to build infrastructure and continue to forge new relationships between international, regional and local natural disaster response agencies and other Earth-observing space agencies around the world.

Satellites and Instruments

NASA has two different types of satellite systems to help track wildfires: polar orbiters and geostationary platforms. Polar orbiters like NASA's Terra and Aqua satellites and NASA-NOAA's Suomi NPP satellite provide detailed views of fires and smoke globally up to twice a day.

In contrast, geostationary satellites like GOES (which is operated by NOAA but was designed and built by NASA) orbit Earth in an equatorial plane with a 24-hour period, the same rate at which Earth rotates, and therefore they remain at a fixed longitude above the equator. This enables the geostationary satellites to provide frequent (five-minute) repeat imaging of a portion of the globe; however, they typically have coarser spatial resolution than the polar orbiters, which fly at much lower altitudes (about 435 miles, or 700 kilometers, above Earth's surface).

The NASA-operated polar-orbiting satellite instruments that are relevant for fire monitoring and management are described below. In addition, other satellites used for fire forecasting and risk assessment include the Gravity Recovery and Climate Experiment (GRACE),Global Precipitation Measurement mission (GPM) and Soil Moisture Active Passive or (SMAP) satellites.

Finally, burned area mapping leverages data from Landsat and the European Space Agency's Sentinel-2 satellite, along with the Moderate Resolution Imaging Spectrometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) instruments. Post-fire assessment of damages to human and natural systems is a key part of understanding the potential for debris flows and landslides, as well as the influence of changing frequency and severity of wildfires.

ASTER Instrument

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument flies aboard NASA's Terra satellite. With its spectral bands from the visible to the thermal infrared wavelength region and its high spatial resolution of about 50 to 300 feet (15 to 90 meters), ASTER images Earth to map and monitor the changing surface of our planet. The broad spectral coverage of ASTER provides scientists in numerous disciplines with critical information for surface mapping and monitoring of dynamic conditions and temporal change. False-color ASTER composite images are created using visible, near-infrared, and thermal infrared wavelengths, each making different features such as smoke, active fires and ground surfaces, stand out. ASTER's U.S. science team is located at JPL.

AIRS Instrument

Data from the JPL-built and managed Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua spacecraft provide a look at concentrations and global transport of carbon monoxide pollution from fires burning. Various bands of AIRS imagery can be combined to provide a false-color composite image to show carbon monoxide concentrations and temperatures. The highest concentrations of carbon monoxide are shown in yellows and reds in AIRS imagery.

AIRS is sensitive to carbon monoxide in the mid-troposphere at heights between 1.2 and 6.2 miles (2 and 10 kilometers), with a peak sensitivity at an altitude of approximately 3.1 miles (5 kilometers). Strong winds at these altitudes are conducive to the long-range transport of pollution lifted by heat from strong fires.

MISR Instrument

The JPL-built and managed Multi-angle Imaging SpectroRadiometer (MISR) instrument aboard NASA's Terra satellite also provides unique information on wildfire smoke plume characteristics. MISR's nine cameras, each viewing Earth at a different angle, are used to determine the heights of smoke plumes above the surface in much the same way that our two eyes, pointing in slightly different directions, give us depth perception. Plume height is an important parameter that governs how far the smoke particles travel in the atmosphere; injection of the particles to higher altitudes generally impacts air quality farther away from the source. MISR's multi-angular observing strategy also enables estimation of the concentrations of the airborne smoke particles. Inhalation of these particles increases the risk of cardiovascular and respiratory disease.

CALIOP Instrument

The Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument, which flies on the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite, provides information on smoke plume injection height and the vertical distribution of aerosols through the atmosphere. These lidar data are unique in their ability to detect optically thin smoke layers at a fine vertical resolution, and CALIOP is able to view extensive smoke plumes that do not have clear boundaries. When paired with models, this instrument is able to provide novel information, such as the attribution of a river of smoke to numerous fires and the evolution of smoke-plume injection height over a day, which has implications for climate (black carbon transport and deposition on snow and ice, albedo change), air quality and human health.

MODIS Instrument

The MODIS instrument flies aboard two NASA satellites: Terra and Aqua. MODIS provides daytime visible imagery and infrared night-time imagery.

In the images, actively burning areas or hot spots, as detected by MODIS's thermal bands, are outlined in red. Each hot spot is an area where the thermal detectors on the MODIS instrument recognized temperatures higher than background. Such hot spots are diagnostic for detecting fire whether or not they are accompanied by plumes of smoke.

MODIS imagery can also be false-colored to show the extent of burned areas, the brick red color in false-colored images.

MOPITT Instrument

The specific focus of the NASA Terra satellite's Measurement of Pollution in the Troposphere (MOPITT) instrument is on the distribution, transport, sources and sinks of carbon monoxide in the troposphere. Carbon monoxide, which is expelled from factories, cars and forest fires, hinders the atmosphere's natural ability to rid itself of harmful pollutants.

VIIRS Instrument

NASA-NOAA's Suomi NPP satellite's VIIRS has provided daytime and night-time imagery of wildfires. VIIRS is the younger sister of MODIS and provides finer spatial resolution imagery (1,230 feet or 375 meters). Daytime imagery shows both the extent of smoke and heat signatures from the fires burning.

Also, the VIIRS "day/night band" provides a look at the heat of fires at night. It detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe signals such as city lights, auroras and wildfires.

Aircraft

NASA has a fleet of research aircraft carrying the latest sensor technologies that can be used for Earth observations. NASA's ER-2 aircraft, based at Armstrong Flight Research Center (AFRC) in Palmdale, California, flies as high as 70,000 feet (21,300 meters), almost twice as high as a commercial airliner, and is used for science research missions over much of the world. In December 2017, the aircraft flew locally over California wildfire events, testing early versions of science instruments that may one day be launched into space aboard a satellite to observe our home planet Earth.

AVIRIS Instrument

During the December engineering test flights, the ER-2 carried a JPL-built spectrometer called the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-classic). AVIRIS is a modern instrument with an extensive heritage that has demonstrated the ability to estimate vegetation fuel types (e.g., vegetation species and densities) and fuel condition (live vs. dead, as well as moisture status). Because it provides the full spectral signature of the landscape it is imaging, spanning the visible to shortwave infrared, it can provide a total spectral "fingerprint" of its imaging area and can be used to estimate fire temperature.

HyTES and MASTER

The Hyperspectal Thermal Emission Spectrometer (HyTES) and the MODIS/ASTER (MASTER) Airborne Simulator are both airborne instruments that fly on different aircraft. HyTES is a new airborne imaging spectrometer developed by JPL. The overall goal of the HyTES project is to provide precursor high spectral and spatial resolution thermal infrared (temperature) data. Products generated provide temperature, emissivity and gas detection. HyTES can be used to efficiently detect and characterize the spatial structures of individual plumes of methane, hydrogen sulfide, ammonia, nitrogen dioxide and sulfur dioxide. The airborne MASTER instrument collects ASTER-like and MODIS-like land datasets to validate the ASTER and MODIS satellite instrument data.

Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR)

The JPL-built and managed UAVSAR is a fully polarimetric radar instrument operating in the microwave portion of the electromagnetic spectrum. It is an active sensor, sending out polarized electromagnetic pulses that interact with ground cover in complex but quantifiable ways, enabling the characterization of changes in Earth's surface through clouds, smoke and dust. UAVSAR has been used to estimate fire fuel and map fire scars, with particular success in certain types of vegetation cover, such as chaparral. The changes associated with these fires are detectable by UAVSAR for several years, enabling the ability to monitor long-term vegetation recovery after a fire. UAVSAR is an airborne testbed for the orbital NISAR instrument, a joint mission with the Indian Space Research Organisation, which is expected to launch in 2021.

International Space Station

Astronauts aboard the International Space Station have a unique vantage point and provide camera and video imagery of wildfires and smoke transport while they orbit Earth. These ISS datasets also contribute to the library of continuous monitoring and observations of wildfires and other Earth phenomena that scientists and fire managers use daily here on Earth to make effective discoveries and support wildfire management decision processes.

All of these satellite and airborne systems, combined together in a sensor-web, give us a much improved understanding of the role and extent of wildfires on our planet.

NASA maintains the NASA Fire and Smoke webpage, where many of the products are posted with updates on various incidents around the world.

For more information, see NASA's Fire and Smoke page:

https://www.nasa.gov/fires

and NASA's Earth Observatory Natural Hazards page:

https://earthobservatory.nasa.gov/NaturalHazards/

 

This message was sent to chantybanty1.chanti@blogger.com from jplnewsroom@jpl.nasa.gov

NASA Jet Propulsion Laboratory
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109

Teachable Moment: Watching This Month's Total Lunar Eclipse

NASA/JPL Edu Teachable Moment: Watching This Month's Total Lunar Eclipse
 

Teachable Moment: Watching This Month's Total Lunar Eclipse

A full moon is always a good reason to go outside and turn your head toward the sky, but those who do so early on January 31 will be treated to the sight of a total lunar eclipse (and a supermoon)! It's the only total lunar eclipse visible from North America in 2018, so it's a great opportunity for students to observe the Moon – and for teachers to make connections to in-class science content.

In the latest Teachable Moment from NASA/JPL Edu, education specialist Lyle Tavernier explains what causes a total lunar eclipse, what it tells us about Earth and how to see one in action on January 31. Teachers and parents can also explore a collection of lessons and activities to get students curious and excited about the Moon.


Read the Blog
 

For more about supermoons, see this related Teachable Moment from NASA/JPL Edu: What's a Supermoon and Just How Super Is It?

Related Lessons and Activities

Use these standards-aligned lessons and related activities to get your students excited about the eclipse, moon phases and Moon observations.

NASA/JPL Edu Lesson: Evaluating a Lunar Eclipse *NEW* Evaluating a Lunar Eclipse (Grades 3-12) - Students use the Danjon Scale of Lunar Eclipse Brightness to illustrate the range of colors and brightness the Moon can take on during a total lunar eclipse.
Get started
NASA/JPL Edu Lesson Collection: Observing the Moon Observing the Moon (Grades K-6) - Students identify the Moon's location in the sky and record their observations in a journal over the course of the moon-phase cycle.
Get started
NASA/JPL Edu Lesson Collection: Moon Phases Moon Phases (Grades 1-6) - Students learn about the phases of the Moon by acting them out. In 30 minutes, they will act out one complete, 30-day, Moon cycle.
Get started
NASA/JPL Edu Lesson: Measuring the Supermoon Measuring the Supermoon (Grades 5-12) - Students take measurements of the Moon during its full phase over multiple Moon cycles to compare and contrast results.
Read more
NASA/JPL Edu Lesson: Modeling the Earth-Moon System Modeling the Earth-Moon System (Grades 6-8) – Students learn about scale models and distance by creating a classroom-size Earth-Moon system.
Read more
NASA/JPL Edu DIY Project: Make a Moon Phases Calendar and Calculator Make a Moon Phases Calendar and Calculator - Like a decoder wheel for the Moon, this calendar will show you where and when to see the Moon and every moon phase throughout the year!
Get started

 

This message was sent to chantybanty1.chanti@blogger.com from education@jpl.nasa.gov

NASA/JPL Edu
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109

Tuesday, January 23, 2018

JPL News - Day in Review

 

DAY IN REVIEW
Dust Storms Linked to Gas Escape from Mars Atmosphere
Some Mars experts are eager and optimistic for a dust storm this year to grow so grand it darkens skies around the entire Red Planet.
› Read the full story
Explorer 1: The Beginning of American Space Science
Sixty years ago next week, America launched its first satellite, the JPL-built Explorer 1, marking the beginning of the scientific exploration of space.
› Read the full story
Dust on Snow Controls Springtime River Rise in West
The amount of dust on the snowpack, not the warmth of the spring air, controls the pace of spring snowmelt flowing into the Colorado River.
› Read the full story

 

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NASA Jet Propulsion Laboratory
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109

NASA/JPL Educator Workshop – Engineering a Journey to Mars

 

Engineering a Journey to Mars – NASA/JPL Educator Workshop
 

Educator Workshop: Engineering a Journey to Mars

When: Saturday, Feb. 10, 9 a.m. to 12 p.m.

Where: NASA Jet Propulsion Laboratory, Pasadena, California

Target Audience: Teachers for grades 4-12

Overview: NASA's Jet Propulsion Laboratory has two exciting missions to Mars launching in 2018 and in 2020. Before they launch, get familiar with the processes that scientists and engineers use to create these missions – and learn how to take students on the same journey using standards-aligned lessons from NASA/JPL Edu. Together, we will design Mars missions and build a landing system to ensure the spacecraft arrive safely – all to advance our understanding of the Red Planet.

  • This workshop is not available online; you must be physically present to participate.
  • This workshop is limited to educators at U.S.-based institutions and organizations.

› Register Online

Questions? Call the Educator Resource Center at 818-393-5917.

Can't attend the workshop? Explore these standards-aligned lessons and resources online.

  • Marsbound (Grades 4-12)  This board-game activity teaches students the process of designing, engineering and creating technology for a mission to Mars.
  • Touchdown (Grades 3-8) – Students follow the engineering design process to design and build a shock-absorbing system to land safely on Mars.

Discover More From NASA Space Place

The Space Place Newsletter NASA Space Place is a premier destination for science, technology, engineering and mathematics content for children between the ages of 8 and 13. Subscribe to The Space Place Newsletter to discover new educational games, videos and hands-on activities.

 

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NASA/JPL Edu
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109

Thursday, January 18, 2018

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Wednesday, January 17, 2018

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JPL News - Day in Review

 

DAY IN REVIEW
NASA JPL latest news release
Cassini Finds Saturn Moon Has 'Sea Level' Like Earth

Saturn's moon Titan may be nearly a billion miles away from Earth, but a recently published paper based on data from NASA's Cassini spacecraft reveals a new way this distant world and our own are eerily similar. Just as the surface of oceans on Earth lies at an average elevation that we call "sea level," Titan's seas also lie at an average elevation.

This is the latest finding that shows remarkable similarities between Earth and Titan, the only other world we know of in our solar system that has stable liquid on its surface. The twist at Titan is that its lakes and seas are filled with hydrocarbons rather than liquid water, and water ice overlain by a layer of solid organic material serves as the bedrock surrounding these lakes and seas.

The new paper, led by Alex Hayes at Cornell University in Ithaca, New York, and published in the journal Geophysical Research Letters, finds that Titan's seas follow a constant elevation relative to Titan's gravitational pull -- just like Earth's oceans. Smaller lakes on Titan, it turns out, appear at elevations several hundred feet, or meters, higher than Titan's sea level. Lakes at high elevation are commonly found on Earth. The highest lake navigable by large ships, Lake Titicaca, is over 12,000 feet [3,700 meters] above sea level.

The new study suggests that elevation is important because Titan's liquid bodies appear to be connected under the surface in something akin to an aquifer system at Earth. Hydrocarbons appear to be flowing underneath Titan's surface similar to the way water flows through underground porous rock or gravel on Earth, so that nearby lakes communicate with each other and share a common liquid level.

The paper was based on data obtained by Cassini's radar instrument until just months before the spacecraft burned up in the Saturn atmosphere last year. It also used a new topographical map published in the same issue of Geophysical Research Letters.

For more details on the two papers, visit:

https://news.cornell.edu/stories/2018/01/saturns-moon-titan-sports-earth-features

The Cassini-Huygens mission is a cooperative project of NASA, ESA (European Space Agency) and the Italian Space Agency. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. JPL designed, developed and assembled the Cassini orbiter. The radar instrument was built by JPL and the Italian Space Agency, working with team members from the U.S. and several European countries.

More information about Cassini:

https://www.nasa.gov/cassini

https://saturn.jpl.nasa.gov

 

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NASA Jet Propulsion Laboratory
NASA's Jet Propulsion Laboratory
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Pasadena, CA 91109

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Teachable Moment: Explorer 1 Anniversary Marks 60 Years of Science in Space

NASA/JPL Edu Teachable Moment: Explorer 1 Anniversary Marks 60 Years of Science in Space
 

Teachable Moment: Explorer 1 Anniversary Marks 60 Years of Science in Space

This month marks the 60th anniversary of the launch of America's first satellite, Explorer 1. The small, pencil-shaped satellite did more than launch the U.S. into the Space Age. With its collection of instruments, or scientific tools, it turned space into not just a new frontier, but also a place of boundless scientific exploration that could eventually unveil secrets of new worlds – as well as the mysteries of our own planet.

In the latest Teachable Moment from NASA/JPL Edu, education specialist Ota Lutz explains how a team at the Jet Propulsion Laboratory in Pasadena, California, modified an Army rocket to make the first scientific study from space possible – and how data from Explorer 1 is still inspiring tantilizing new questions today.

Find out how to engage students in this important piece of space history on the NASA/JPL Edu Teachable Moments blog:


Read the Blog
 

Related Lessons and Activities

Get students building their own rockets and model satellites, plus learning about how NASA studies Earth from space today with these standards-aligned lessons from NASA/JPL Edu:

NASA/JPL Edu Lesson: Build a Satellite *NEW* Build a Satellite (Grades 5-8) – Students will use the engineering design process to design, build, test and improve a model satellite intended to investigate the surface of a planet.
Get started
NASA/JPL Edu Lesson Collection: Rocket Lessons and Activities Rocket Lessons and Activities (Grades K-9) – Use these exciting lessons to help your students experience the thrill of building and launching their own rockets using the engineering design process!
Get started
NASA/JPL Edu Lesson Collection: Rocket Lessons and Activities Earth Science Lessons and Activities (Grades K-12) – Use these lessons to engage your students in studying Earth from space!
Get started
NASA/JPL Edu Game: Build Your Own Space Mission Game: Build Your Own Space Mission – Have younger students play this game to place instruments aboard a spacecraft and launch it into space!
Read more
NASA GLOBE Observer App Download the GLOBE Observer app and have students be citizen scientists in support of NASA Earth science missions! Learn more about how to participate.

 

This message was sent to chantybanty1.chanti@blogger.com from education@jpl.nasa.gov

NASA/JPL Edu
NASA's Jet Propulsion Laboratory
4800 Oak Grove Dr
Pasadena, CA 91109