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Topic: Greenbelt MD

NASA’s Solar Dynamics Observatory sees Giant Sunspot erupting more Solar Flares from the Sun

 

Written by Karen C. Fox
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – The sun emitted a mid-level solar flare, an M6.6-class, peaking at 11:32pm EDT on October 28th, 2014 – the latest in a series of substantial flares from a giant active region on the sun that first erupted with a significant solar flare on October 19th.

NASA’s Solar Dynamics Observatory, which constantly observes the sun, captured images of the event.

To see how this event may affect Earth, please visit NOAA’s Space Weather Prediction Center at http://spaceweather.gov , the U.S. government’s official source for space weather forecasts, alerts, watches and warnings.

A large active region erupts with a mid-level flare, an M6.6-class, in this image from NASA's SDO on the night of Oct. 27, 2014. The region will soon rotate over the right horizon of the sun and will no longer be facing Earth. (NASA/SDO)

A large active region erupts with a mid-level flare, an M6.6-class, in this image from NASA’s SDO on the night of Oct. 27, 2014. The region will soon rotate over the right horizon of the sun and will no longer be facing Earth. (NASA/SDO)

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NASA’S Lunar Reconnaissance Orbiter takes photos of LADEE’s impact crater on the Moon

 

Written by Nancy Neal-Jones
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’S Lunar Reconnaissance Orbiter (LRO) spacecraft has spied a new crater on the lunar surface; one made from the impact of NASA’s Lunar Atmosphere and Dust Environment Explorer (LADEE) mission.

“The Lunar Reconnaissance Orbiter Camera (LROC) team recently developed a new computer tool to search Narrow Angle Camera (NAC) before and after image pairs for new craters, the LADEE impact event provided a fun test, said Mark Robinson, LROC principal investigator from Arizona State University in Tempe. “As it turns there were several small surface changes found in the predicted area of the impact, the biggest and most distinctive was within 968 feet (295 meters) of the spot estimated by the LADEE operations team. What fun!”

LRO has imaged the LADEE impact site on the eastern rim of Sundman V crater. The image was created by ratioing two images, one taken before the impact and another afterwards. The bright area highlights what has changed between the time of the two images, specifically the impact point and the ejecta. (NASA/Goddard/Arizona State University)

LRO has imaged the LADEE impact site on the eastern rim of Sundman V crater. The image was created by ratioing two images, one taken before the impact and another afterwards. The bright area highlights what has changed between the time of the two images, specifically the impact point and the ejecta.
(NASA/Goddard/Arizona State University)

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NASA’s Lunar Reconnaissance Orbiter discovers younger than expected Volcanic Activity on the Moon

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA’s Lunar Reconnaissance Orbiter (LRO) has provided researchers strong evidence the moon’s volcanic activity slowed gradually instead of stopping abruptly a billion years ago. Scores of distinctive rock deposits observed by LRO are estimated to be less than 100 million years old.

This time period corresponds to Earth’s Cretaceous period, the heyday of dinosaurs. Some areas may be less than 50 million years old.

“This finding is the kind of science that is literally going to make geologists rewrite the textbooks about the moon,” said John Keller, LRO project scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

The feature called Maskelyne is one of many newly discovered young volcanic deposits on the Moon. Called irregular mare patches, these areas are thought to be remnants of small basaltic eruptions that occurred much later than the commonly accepted end of lunar volcanism, 1 to 1.5 billion years ago. (NASA/GSFC/Arizona State University)

The feature called Maskelyne is one of many newly discovered young volcanic deposits on the Moon. Called irregular mare patches, these areas are thought to be remnants of small basaltic eruptions that occurred much later than the commonly accepted end of lunar volcanism, 1 to 1.5 billion years ago. (NASA/GSFC/Arizona State University)

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NASA researchers report Antarctic Sea Ice growth hits Record high

 

Written by Kate Ramsayer
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Sea ice surrounding Antarctica reached a new record high extent this year, covering more of the southern oceans than it has since scientists began a long-term satellite record to map sea ice extent in the late 1970s.

The upward trend in the Antarctic, however, is only about a third of the magnitude of the rapid loss of sea ice in the Arctic Ocean.

The new Antarctic sea ice record reflects the diversity and complexity of Earth’s environments, said NASA researchers. Claire Parkinson, a senior scientist at NASA’s Goddard Space Flight Center, has referred to changes in sea ice coverage as a microcosm of global climate change.

On Sept. 19, 2014, the five-day average of Antarctic sea ice extent exceeded 20 million square kilometers for the first time since 1979, according to the National Snow and Ice Data Center. The red line shows the average maximum extent from 1979-2014. (NASA's Scientific Visualization Studio/Cindy Starr)

On Sept. 19, 2014, the five-day average of Antarctic sea ice extent exceeded 20 million square kilometers for the first time since 1979, according to the National Snow and Ice Data Center. The red line shows the average maximum extent from 1979-2014. (NASA’s Scientific Visualization Studio/Cindy Starr)

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NASA’s Solar Dynamics Observatory captures images of Mid-level Solar Flare from the Sun

 

Written by Karen C. Fox
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – The sun emitted a mid-level solar flare, peaking at 3:01pm EDT on October 2nd, 2014. NASA’s Solar Dynamics Observatory, which watches the sun 24-hours a day, captured images of the flare. Solar flares are powerful bursts of radiation.

Harmful radiation from a flare cannot pass through Earth’s atmosphere to physically affect humans on the ground, however — when intense enough — they can disturb the atmosphere in the layer where GPS and communications signals travel.

NASA's Solar Dynamics Observatory captured this image of a solar flare on Oct. 2nd, 2014. The solar flare is the bright flash of light on the right limb of the sun. A burst of solar material erupting out into space can be seen just below it. (NASA/SDO)

NASA’s Solar Dynamics Observatory captured this image of a solar flare on Oct. 2nd, 2014. The solar flare is the bright flash of light on the right limb of the sun. A burst of solar material erupting out into space can be seen just below it. (NASA/SDO)

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NASA’s Cassini Spacecraft finds giant Cloud circling south pole of Saturn’s moon Titan

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Scientists analyzing data from NASA’s Cassini mission have discovered that a giant, toxic cloud is hovering over the south pole of Saturn’s largest moon, Titan, after the atmosphere there cooled dramatically.

The scientists found that this giant polar vortex contains frozen particles of the toxic compound hydrogen cyanide, or HCN.

“The discovery suggests that the atmosphere of Titan’s southern hemisphere is cooling much faster than we expected,” said Remco de Kok of Leiden Observatory and SRON Netherlands Institute for Space Research, lead author of the study published today in the journal Nature.

These two views of Saturn's moon Titan show the southern polar vortex, a huge, swirling cloud that was first observed by NASA's Cassini spacecraft in 2012. (NASA/JPL-Caltech/ASI/University of Arizona/SSI/Leiden Observatory and SRON)

These two views of Saturn’s moon Titan show the southern polar vortex, a huge, swirling cloud that was first observed by NASA’s Cassini spacecraft in 2012. (NASA/JPL-Caltech/ASI/University of Arizona/SSI/Leiden Observatory and SRON)

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NASA’s Swift satellite detects strong, hot stellar flares from nearby Red Dwarf Star

 

Written by Francis Reddy
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, Maryland – On April 23rd, NASA’s Swift satellite detected the strongest, hottest, and longest-lasting sequence of stellar flares ever seen from a nearby red dwarf star. The initial blast from this record-setting series of explosions was as much as 10,000 times more powerful than the largest solar flare ever recorded.

“We used to think major flaring episodes from red dwarfs lasted no more than a day, but Swift detected at least seven powerful eruptions over a period of about two weeks,” said Stephen Drake, an astrophysicist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, who gave a presentation on the “superflare” at the August meeting of the American Astronomical Society’s High Energy Astrophysics Division. “This was a very complex event.”

DG CVn, a binary consisting of two red dwarf stars shown here in an artist's rendering, unleashed a series of powerful flares seen by NASA's Swift. At its peak, the initial flare was brighter in X-rays than the combined light from both stars at all wavelengths under typical conditions. (NASA's Goddard Space Flight Center/S. Wiessinger)

DG CVn, a binary consisting of two red dwarf stars shown here in an artist’s rendering, unleashed a series of powerful flares seen by NASA’s Swift. At its peak, the initial flare was brighter in X-rays than the combined light from both stars at all wavelengths under typical conditions. (NASA’s Goddard Space Flight Center/S. Wiessinger)

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NASA reports Arctic sea ice coverage at Sixth Lowest on Record

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Arctic sea ice coverage continued its below-average trend this year as the ice declined to its annual minimum on September 17th, according to the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado, Boulder.

“Arctic sea ice coverage in 2014 is the sixth lowest recorded since 1978,” said Walter Meier, a research scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

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NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft enters Mars Orbit

 

Written by Tony Phillips
Science at NASA

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft successfully entered Mars’ orbit at 10:24pm EDT Sunday, September 21st, where it now will prepare to study the Red Planet’s upper atmosphere as never done before. MAVEN is the first spacecraft dedicated to exploring the tenuous upper atmosphere of Mars.

“As the first orbiter dedicated to studying Mars’ upper atmosphere, MAVEN will greatly improve our understanding of the history of the Martian atmosphere, how the climate has changed over time, and how that has influenced the evolution of the surface and the potential habitability of the planet,” said NASA Administrator Charles Bolden. “It also will better inform a future mission to send humans to the Red Planet in the 2030s.”

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NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft ready to enter Mars orbit

 

Written by Izumi Hansen and Elizabeth Zubritsky
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft is nearing its scheduled September 21st insertion into Martian orbit after completing a 10-month interplanetary journey of 442 million miles (711 million kilometers).

Flight Controllers at Lockheed Martin Space Systems in Littleton, Colorado, will be responsible for the health and safety of the spacecraft throughout the process. The spacecraft’s mission timeline will place the spacecraft in orbit at approximately 6:50pm PDT (9:50pm EDT).

NASA's MAVEN spacecraft is quickly approaching Mars on a mission to study its upper atmosphere. When it arrives on September 21, 2014, MAVEN's winding journey from Earth will culminate with a dramatic engine burn, pulling the spacecraft into an elliptical orbit.

NASA’s MAVEN spacecraft is quickly approaching Mars on a mission to study its upper atmosphere. When it arrives on September 21, 2014, MAVEN’s winding journey from Earth will culminate with a dramatic engine burn, pulling the spacecraft into an elliptical orbit.

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