Astronomy: December 2010 Archives

Kepler Goes Into Safe Mode

"On Dec. 22, 2010, Kepler experienced a safe mode event. A safe mode is a self-protective measure that the spacecraft takes when something unexpected occurs. During safe mode, the spacecraft points the solar panels directly at the sun and begins to slowly rotate about a sun-aligned axis. This safe mode orientation provides the vehicle with the maximum power, and limits the buildup of momentum from the solar wind."

Lunar Eclipse Photo

Photo: Total Lunar Eclipse as Seen From Earth's Surface

"A total lunar eclipse is seen as the full moon is shadowed by the Earth on the arrival of the winter solstice, Tuesday, December 21, 2010 in Arlington, VA. The eclipse lasted about three hours and twenty-eight minutes. A lunar eclipse occurs when the Earth lines up directly between the sun and the moon, blocking the sun's rays and casting a shadow on the moon. As the moon moves deeper and deeper into the Earth's shadow, the moon changes color before your very eyes, turning from gray to an orange or deep shade of red."

Announcement of Earlier Kepler Data Release--from June 2011 to 1 February 2011

"The Kepler project wishes to inform the community that it is moving the next data release date (originally planned for June 2011) forward to 1 February 2011. This data set (Quarter 2) is the first consisting of a complete 3 months of observations. It will contain light curves for approximately 165,000 stars (most of which are late-type Main Sequence stars) brighter than 16th magnitude in the Cygnus & Lyra constellations sampled at a 30-minute cadence. Three subsets of one-month each of [up to 512] stars were sampled at 1 min cadence. The shorter cadence data will be released on the same schedule."



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This page is an archive of entries in the Astronomy category from December 2010.

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