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Kepler's Supernova Remnant :: September 11, 2012: In 1604, a new star appeared in the night sky that was much brighter than Jupiter and dimmed over several weeks. This event was witnessed by sky watchers including the famous astronomer Johannes Kepler. Centuries later, the debris from this exploded star is known as the Kepler supernova remnant.

Tycho's Supernova Remnant.

ピンもと:natgeo.nikkeibp.co.jp

今週の宇宙画像1:太陽磁場の画像化ほか

Photograph by Solar Dynamics Observatory/NASA  太陽の磁場は、地球上に激しく美しいさまざまな気象現象を引き起こす。たとえばコロナガス(CME)が噴出して地球に到達すれば、オーロラが発生する(CMEについては「太陽嵐でパソコンのデータが消失する?」を参照)。

ピンもと:WIRED

Space Photo of the Day 2012

Cassiopeia A -- supernova remnant

Nagano, Japan

the universe is simply astounding

Stars over Mt.Fuji by night, Japan.