2007-06-12 07:26:14 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Because of sunlight reflected by it.
2007-06-12 07:30:56 · answer #1 · answered by DrAnders_pHd 6 · 0⤊ 0⤋
The glow of a comet's tail has two sources - emissions from ionized gas, and sunlight reflecting off dust particles shed by the comet. In some comets you can see two separate tails, because the gas and dust react differently to the forces acting on them.
2007-06-12 07:35:53 · answer #2 · answered by injanier 7 · 1⤊ 0⤋
A comet's tail is actualy debris from the comet itself. This debris reflects light from nearby stars, allowing us to see not only where it's been, but where it's going.
2007-06-12 07:33:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Comet
2007-06-12 07:30:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It reflects sunlight.
2007-06-12 07:31:21 · answer #5 · answered by Mark 6 · 0⤊ 0⤋