AAVSO Alert Notice 452Dr. Hans Moritz Guenther, Harvard-Smithsonian Center for Astrophysics, has requested bracketing and simultaneous observations in support of XMM-Newton x-ray observations of the classical T Tauri star SU Aur and the close-by Herbig Ae star AB Aur scheduled for February 15 – 17, … Read the rest of this article
A crescent Enceladus appears with Saturn’s rings in this Cassini spacecraft view of the moon.
The famed jets of water ice emanating from the south polar region of the 504 km-diameter moon are faintly visible.
They appear as a small white blur below the dark pole, down and to the right of the illuminated part of the moon’s surface. The … Read the rest of this article
Europe’s Rosetta spacecraft is en route to intercept a comet– and to make history. In 2014, Rosetta will enter orbit around comet 67P/Churyumov-Gerasimenkoand land a probe on it, two firsts.
Rosetta’s goal is to learn the primordial story a comet tells as it gloriously falls to pieces.
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Europe’s Rosetta spacecraft is en route to intercept a comet– and to make …
New images from ESA’s Mars Express show the Syrtis Major region on Mars. Once thought to be a sea of water, the region is now known to be a volcanic province dating back billions of years.
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Syrtis Major, discovered in 1659 by Christaan Huygens, is a volcanic province on Mars. The image is centred on approximately 16°N/73°E. The High-Resolution Stereo …
More than 6,300 individuals applied to become a NASA astronaut between Nov. 15, 2011 and Jan. 27, the second highest number of applications ever received by the agency. After a thorough selection process, which includes interviews and medical examinations, nine to 15 people will be selected to become part of the 21st astronaut class.
“This is a great time to … Read the rest of this article
ESA’s Mars Express has returned strong evidence for an ocean once covering part of Mars. Using radar, it has detected sediments reminiscent of an ocean floor within the boundaries of previously identified, ancient shorelines on Mars.
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New results from the MARSIS radar on Mars Express give strong evidence for a former ocean of Mars. The radar detected sediments reminiscent of …
NASA’s Glenn Research Center (GRC) in Cleveland will host a special event on March 2 to celebrate the 50th anniversary of John Glenn’s first orbital flight by an American. NASA also will invite 100 people for a behind-the-scenes Tweetup at GRC in advance of the celebration event.
The Tweetup activities begin at 7:30 a.m. EST with a tour of … Read the rest of this article
Earth’s magnetic field reverberated from a Coronal Mass Ejection (CME) impact during the early hours of Jan. 22nd. The hit compressed Earth’s magnetic field, briefly exposing some geosynchronous satellites to solar wind plasma, and disturbed the ionization structure of Earth’s upper atmosphere.
As night fell on Jan. 22nd, Arctic sky watchers reported bright auroras in response to a polar geomagnetic … Read the rest of this article
Active sunspot 1401 erupted yesterday, Jan. 19th, for more than an hour around 16:00 UT.
The long-duration blast produced an M3-class solar flare and a Coronal Mass Ejection that appears to be heading toward Earth.
Forecasters say strong geomagnetic storms are possible when the cloud arrives during the late hours of Jan. 21st. High-latitude (and possibly middle-latitude) sky watchers should … Read the rest of this article
Twin NASA spacecraft that achieved orbit around the moon New Year’s Eve and New Year’s Day have new names, thanks to elementary students in Bozeman, Mont. Their winning entry, “Ebb and Flow,” was selected as part of a nationwide school contest that began in October 2011.
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Using a precision formation-flying technique, the twin GRAIL spacecraft will map the moon’s gravity …
The Sun Now (Visible light)
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The Sun Now (H-Alpha light)
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Aurora Oval
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Aurora Oval
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