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NASA says there will be a bright colorful Lunar Eclipse October 8th

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – On Wednesday morning, October 8th, not long before sunrise, the bright full Moon over North America will turn a lovely shade of celestial red. It’s a lunar eclipse—visible from all parts of the USA.

“It promises to be a stunning sight, even from the most light polluted cities,” says NASA’s longtime eclipse expert Fred Espenak. “I encourage everyone, especially families with curious children, to go out and enjoy the event.”

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NASA’s Dawn Spacecraft out of Safe Mode and back to Normal Operational State

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – The Dawn spacecraft has resumed normal ion thrusting after the thrusting unexpectedly stopped and the spacecraft entered safe mode on September 11th. That anomaly occurred shortly before a planned communication with NASA’s Deep Space Network that morning. The spacecraft was not performing any special activities at the time.

Engineers immediately began working to restore the spacecraft to its normal operational state. The team determined the source of the problems, corrected them, and then resumed normal ion thrusting on Monday night, September 15th.

Artist concept of NASA's Dawn spacecraft orbiting Ceres during an upcoming flyby. (NASA/JPL-Caltech/UCLA)

Artist concept of NASA’s Dawn spacecraft orbiting Ceres during an upcoming flyby. (NASA/JPL-Caltech/UCLA)

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NASA reports landing site for Rosetta Spacecraft’s Philae lander on comet set

 

Written by DC Agle and Dwayne Brown
NASA

NASA - National Aeronautics and Space AdministrationPasadena, CA – The European Space Agency’s Rosetta’s lander, Philae, will target Site J, an intriguing region on comet 67P/Churyumov-Gerasimenko that offers unique scientific potential, with hints of activity nearby, and minimum risk to the lander compared to the other candidate sites.

The 220-pound (100-kilogram) lander is scheduled to reach the surface on November 11th, where it will perform in-depth measurements to characterize the nucleus. Rosetta is an international mission spearheaded by the European Space Agency with support and instruments provided by NASA.

Image depicts the primary landing site on comet 67P/Churyumov-Gerasimenko chosen for the European Space Agency's Rosetta mission. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

Image depicts the primary landing site on comet 67P/Churyumov-Gerasimenko chosen for the European Space Agency’s Rosetta mission. (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

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NASA reports International Space Station experiments with Fire in Zero Gravity

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Fire is inanimate, yet anyone staring into a flame could be excused for thinking otherwise: Fire dances and swirls. It reproduces, consumes matter, and produces waste. It adapts to its environment. It needs oxygen to survive.

In short, fire is uncannily lifelike.

Nowhere is this more true than onboard a spaceship.

Unlike flames on Earth, which have a tear-drop shape caused by buoyant air rising in a gravitational field, flames in space curl themselves into tiny balls.

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NASA’s Galileo spacecraft images give scientists evidence of plate tectonics on Jupiter’s moon Europa

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Scientists have found evidence of plate tectonics on Jupiter’s moon Europa. This indicates the first sign of this type of surface-shifting geological activity on a world other than Earth.

Researchers have clear visual evidence of Europa’s icy crust expanding. However, they could not find areas where the old crust was destroyed to make room for the new.

Scientists have found evidence of plate tectonics on Jupiter's moon Europa. This conceptual illustration of the subduction process (where one plate is forced under another) shows how a cold, brittle, outer portion of Europa's 20-30 kilometer-thick (roughly 10-20 mile) ice shell moved into the warmer shell interior and was ultimately subsumed. A low-relief subsumption band was created at the surface in the overriding plate, alongside which cryolavas may have erupted. (Noah Kroese, I.NK)

Scientists have found evidence of plate tectonics on Jupiter’s moon Europa. This conceptual illustration of the subduction process (where one plate is forced under another) shows how a cold, brittle, outer portion of Europa’s 20-30 kilometer-thick (roughly 10-20 mile) ice shell moved into the warmer shell interior and was ultimately subsumed. A low-relief subsumption band was created at the surface in the overriding plate, alongside which cryolavas may have erupted. (Noah Kroese, I.NK)

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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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New NASA Study reveals ozone-depleting compound tetrachloride abundant in Earth’s Ozone Layer

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – High above Earth, more than 20 miles above sea level, a diaphanous layer of ozone surrounds our planet, absorbing energetic UV rays from the sun.

It is, essentially, sunscreen for planet Earth. Without the ozone layer, we would be bathed in dangerous radiation on a daily basis, with side effects ranging from cataracts to cancer.

People were understandably alarmed, then, in the 1980s when scientists noticed that man made chemicals in the atmosphere were destroying this layer.

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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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