X-ray Dark Planet/comet
Main article: X-ray dark planetX-ray observations offer the possibility to detect (X-ray dark) planets as they eclipse part of the corona of their parent star while in transit. "Such methods are particularly promising for low-mass stars as a Jupiter-like planet could eclipse a rather significant coronal area."
As X-ray detectors have become more sensitive, they have observed that some planets and other normally X-ray non-luminescent celestial objects under certain conditions emit, fluoresce, or reflect X-rays.
Read more about this topic: X-ray Astronomy
Famous quotes containing the words dark, planet and/or comet:
“O conspiracy,
Sham’st thou to show thy dang’rous brow by night,
When evils are most free? O then, by day
Where wilt thou find a cavern dark enough
To mask thy monstrous visage?”
—William Shakespeare (1564–1616)
“Mad? Is it mad that you destroy other people to save yourselves? You have done this. Is it mad that one country must destroy another to save themselves? You have also done this. How then is it mad that one planet must destroy another who threatens their very existence?”
—Edward D. Wood, Jr. (1922–1978)
“Ah, like a comet through flame she moves entranced
Wrapt in her music no bird song, no, nor bough
Breaking with honey buds, shall ever equal.”
—Stephen Spender (1909–1995)