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发帖数: 1994 | 1 Celebrating Hubble With NGC 6751
Credit: A. Hajian (USNO) et al., Hubble Heritage Team (STScI/ AURA), NASA
Explanation: Planetary nebulae can look simple, round, and planet-like in
small telescopes. But images from the orbiting Hubble Space Telescope
have become well known for showing these fluorescent gas shrouds of dying
Sun-like stars to possess a staggering variety of detailed symmetries
and shapes. This composite color Hubble image of NGC 6751 is a beautiful
example of a classic planetary n |
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