rjxie 发表于 2003-8-9 12:25

[酷图] 英仙座流星雨和极光。

Credit & Copyright: Jimmy Westlake (Colorado Mountain College)
Explanation: Just after the Moon set but before the Sun rose in the early morning hours of 2000 August 12, meteors pelted the Earth from the direction of the constellation Perseus, while ions pelted the Earth from the Sun. The meteors were expected as sub-sand grains long left behind by Comet Swift-Tuttle annually create the Perseids Meteor Shower. The aurorae were unexpected, however, as electrons, protons, and heavier ions raced out from a large Coronal Mass Ejection that had occurred just days before on the Sun. In the foreground is Hahn's Peak, an extinct volcano in Colorado, USA. The Perseid meteor shower peaks this year over the next few days, with as much as one bright meteor per minute visible from some locations.

小龙·哈勃 发表于 2003-8-9 12:26

头像咋换了。

rjxie 发表于 2003-8-9 12:30

长大了呗。

;)

小龙·哈勃 发表于 2003-8-9 17:52

还是喜欢以前那个

这个看起来有些奇怪。

meteorobs 发表于 2003-8-9 20:33

有点像农民。。。。

那图前年第二期的天爱曾登过。。。
页: [1]
查看完整版本: [酷图] 英仙座流星雨和极光。