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发帖数: 298 | 1 【 以下文字转载自 Astronomy 讨论区 】
【 原文由 Staccato 所发表 】
Use your powers of cometary prediction to win cool prizes.
by Kelly Kizer Whitt
The Solar and Heliospheric Observatory, better known as SOHO, has been photo-
graphing the sun since its launch in December 1995. A joint venture between
the European Space Agency (ESA) and NASA, the SOHO project has provided an
exciting side benefit: the discovery of hard-to-spot sungrazing comets.
Normally invisible due to their diminutive light and closeness to the su |
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