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Topic: Pasadena CA

NASA’s RapidScat scatterometer to be robotically assembled at International Space Station

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s ISS-RapidScat wind-watching scatterometer, which is scheduled to launch to the International Space Station no earlier than September 19th, will be the first science payload to be robotically assembled in space since the space station itself.

This image shows the instrument assembly on the left, shrouded in white. On the right is Rapid-Scat’s nadir adapter, a very sophisticated bracket that points the scatterometer toward Earth so that it can record the direction and speed of ocean winds. The two pieces are stowed in the unpressurized trunk of a SpaceX Dragon cargo spacecraft at Cape Canaveral Air Force Station in Florida.

RapidScat's two-part payload is shown in the trunk of a SpaceX Dragon cargo spacecraft at NASA's Kennedy Space Center in Florida. (NASA)

RapidScat’s two-part payload is shown in the trunk of a SpaceX Dragon cargo spacecraft at NASA’s Kennedy Space Center in Florida. (NASA)

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NASA’s Cassini Mission has found that Methane Rainfall on Saturn’s moon Titan is being transformed underground lakes

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The NASA and European Space Agency Cassini mission has revealed hundreds of lakes and seas spread across the north polar region of Saturn’s moon Titan. These lakes are filled not with water but with hydrocarbons, a form of organic compound that is also found naturally on Earth and includes methane.

The vast majority of liquid in Titan’s lakes is thought to be replenished by rainfall from clouds in the moon’s atmosphere. But how liquids move and cycle through Titan’s crust and atmosphere is still relatively unknown.

Hundreds of lakes and seas are spread across the surface of Saturn's moon Titan -- its northern polar region in particular. (ESA/ATG medialab)

Hundreds of lakes and seas are spread across the surface of Saturn’s moon Titan — its northern polar region in particular. (ESA/ATG medialab)

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NASA Instrument “Alice” aboard Rosetta Orbiter has sent first data back to Earth about Comet 67P/Churyumov-Gerasimenko

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A NASA instrument aboard the European Space Agency’s (ESA’s) Rosetta orbiter has successfully made its first delivery of science data from comet 67P/Churyumov-Gerasimenko.

The instrument, named Alice, began mapping the comet’s surface last month, recording the first far-ultraviolet light spectra of the comet’s surface. From the data, the Alice team discovered the comet is unusually dark — darker than charcoal-black — when viewed in ultraviolet wavelengths. Alice also detected both hydrogen and oxygen in the comet’s coma, or atmosphere.

Artist's impression of the Rosetta orbiter at comet 67P/Churyumov-Gerasimenko. The image is not to scale. (ESA/ATG Medialab)

Artist’s impression of the Rosetta orbiter at comet 67P/Churyumov-Gerasimenko. The image is not to scale. (ESA/ATG Medialab)

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NASA reports Small Asteroid 2014 RC to Pass Close, but Safely past Earth

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A small asteroid, designated 2014 RC, will safely pass very close to Earth on Sunday, September 7th, 2014.

At the time of closest approach, based on current calculations to be about 2:18pm EDT (11:18am PDT / 18:18 UTC), the asteroid will be roughly over New Zealand.

From its reflected brightness, astronomers estimate that the asteroid is about 60 feet (20 meters) in size.

This graphic depicts the passage of asteroid 2014 RC past Earth on September 7, 2014. At time of closest approach, the space rock will be about one-tenth the distance from Earth to the moon. Times indicated on the graphic are Universal Time. (NASA/JPL-Caltech)

This graphic depicts the passage of asteroid 2014 RC past Earth on September 7, 2014. At time of closest approach, the space rock will be about one-tenth the distance from Earth to the moon. Times indicated on the graphic are Universal Time. (NASA/JPL-Caltech)

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NASA’s Aerial Vehicle Synthetic Aperture Radar to be used to Survey Napa Valley Quake Area

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA scientists are conducting an airborne survey of earthquake fault displacements in the Napa Valley area of Northern California using a sophisticated radar system developed by NASA’s Jet Propulsion Laboratory, Pasadena, California.

A modified C-20A aircraft from NASA’s Armstrong Flight Research Center carrying JPL’s Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) flew a five-hour data-collection mission on Friday, August 29th, over the area that experienced a major quake during the pre-dawn hours on Sunday, August 24th.

NASA's C-20A Earth science research aircraft with the UAVSAR slung underneath its belly lifts off the runway at Edwards Air Force Base on a prior radar survey mission. (NASA Armstrong)

NASA’s C-20A Earth science research aircraft with the UAVSAR slung underneath its belly lifts off the runway at Edwards Air Force Base on a prior radar survey mission. (NASA Armstrong)

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NASA Telescopes reveal Giant Galaxy in the early stages of creation

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Astronomers have for the first time caught a glimpse of the earliest stages of massive galaxy construction. The building site, dubbed “Sparky,” is a dense galactic core blazing with the light of millions of newborn stars that are forming at a ferocious rate.

The discovery was made possible through combined observations from NASA’s Hubble and Spitzer space telescopes, the W.M. Keck Observatory in Mauna Kea, Hawaii, and the European Space Agency’s Herschel space observatory, in which NASA plays an important role.

Artist's impression of a firestorm of star birth deep inside core of young, growing elliptical galaxy. (NASA, Space Telescope Science Institute)

Artist’s impression of a firestorm of star birth deep inside core of young, growing elliptical galaxy. (NASA, Space Telescope Science Institute)

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NASA reports Mars Opportunity Rover to perform flash memory reformat

 

Written by Guy Webster
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – An increasing frequency of computer resets on NASA’s Mars Exploration Rover Opportunity has prompted the rover team to make plans to reformat the rover’s flash memory.

The resets, including a dozen this month, interfere with the rover’s planned science activities, even though recovery from each incident is completed within a day or two.

Flash memory retains data even when power is off. It is the type used for storing photos and songs on smart phones or digital cameras, among many other uses.

NASA's Mars rover Opportunity captured this view southward just after completing a 338-foot (103-meter) southward drive, in reverse, on Aug. 10, 2014. (NASA/JPL-Caltech)

NASA’s Mars rover Opportunity captured this view southward just after completing a 338-foot (103-meter) southward drive, in reverse, on Aug. 10, 2014. (NASA/JPL-Caltech)

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NASA’s Spitzer Space Telescope observes Asteroids circling a Young Star collide

 

Written by Whitney Clavin
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Spitzer Space Telescope has spotted an eruption of dust around a young star, possibly the result of a smashup between large asteroids. This type of collision can eventually lead to the formation of planets.

Scientists had been regularly tracking the star, called NGC 2547-ID8, when it surged with a huge amount of fresh dust between August 2012 and January 2013.

“We think two big asteroids crashed into each other, creating a huge cloud of grains the size of very fine sand, which are now smashing themselves into smithereens and slowly leaking away from the star,” said lead author and graduate student Huan Meng of the University of Arizona, Tucson.

This artist's concept shows the immediate aftermath of a large asteroid impact around NGC 2547-ID8, a 35-million-year-old sun-like star thought to be forming rocky planets. (NASA/JPL-Caltech)

This artist’s concept shows the immediate aftermath of a large asteroid impact around NGC 2547-ID8, a 35-million-year-old sun-like star thought to be forming rocky planets. (NASA/JPL-Caltech)

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NASA says Rosetta Mission has selected Comet Landing Sites for Philae Lander

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – The European Space Agency’s Rosetta mission has chosen five candidate landing sites on comet 67P/Churyumov-Gerasimenko for its Philae lander. Philae’s descent to the comet’s nucleus, scheduled for this November, will be the first such landing ever attempted.

“This is the first time landing sites on a comet have been considered,” said Stephan Ulamec, Philae Lander Manager at the German Aerospace Center, Cologne, Germany. “The candidate sites that we want to follow up for further analysis are thought to be technically feasible on the basis of a preliminary analysis of flight dynamics and other key issues – for example, they all provide at least six hours of daylight per comet rotation and offer some flat terrain. Of course, every site has the potential for unique scientific discoveries.”

This annotated image depicts four of the five potential landing sites for Rosetta's Philae lander. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM)

This annotated image depicts four of the five potential landing sites for Rosetta’s Philae lander. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM)

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NASA reports Snow Cover on Sea Ice in the Arctic has thinned significantly in last 50 years

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – New research led by NASA and the University of Washington, Seattle, confirms that springtime snow on sea ice in the Arctic has thinned significantly in the last 50 years, by about a third in the Western Hemisphere and by half near Alaska.

The new study, published this month in the Journal of Geophysical Research, tracks changes in snow depth over decades. It combines data from NASA’s Bromide, Ozone, and Mercury Experiment (BROMEX) field campaign, NASA’s Operation IceBridge flights, and instrumented buoys and ice floes staffed by Soviet scientists from the 1950s through the 1990s.

Matthew Sturm of the University of Alaska Fairbanks, a co-author of this study, takes a snow measurement on sea ice in the Beaufort Sea in March 2012 during the BROMEX field campaign. (U.S. Army Cold Regions Research and Engineering Laboratory)

Matthew Sturm of the University of Alaska Fairbanks, a co-author of this study, takes a snow measurement on sea ice in the Beaufort Sea in March 2012 during the BROMEX field campaign. (U.S. Army Cold Regions Research and Engineering Laboratory)

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