2007-01-22 02:37:56 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
In addition to the answers already given, there are pulsars (which flash in the sense that they vary in brightness many times a second - unfortunately in the radio spectrum rather than the optical one) and there are binary stars, which appear to vary in brightness because one star in the pair passes in front of the other, and that changes the perceived brightness of the first.
2007-01-22 02:49:23 · answer #1 · answered by aeonturnip 2 · 0⤊ 0⤋
You probably mean the observed twinkle of stars from the ground. It is the light of the star passing through the atmosphere. The light is refracted or bent. Air is constantly moving causing the light to refract in different directions at different times.
2007-01-22 02:50:39 · answer #2 · answered by FourKingHigh 2 · 0⤊ 0⤋
There's no such thing. There are variable stars but the vary in brightness over hours to years. They do not flash light traffic lights or neon signs.
2007-01-22 02:41:48 · answer #3 · answered by Gene 7 · 0⤊ 0⤋
if you mean that some stars,when you look at them,seem to flash, it is an optical sensation made by the atmosphere. hot and cold made it undulate, and that is the cause. if you mind something else, like Hollywood stars, ask them.
2007-01-22 02:46:56 · answer #4 · answered by MONI 3 · 0⤊ 0⤋
It means you're looking at an airplane.
2007-01-22 06:04:54 · answer #5 · answered by Brian 3 · 0⤊ 0⤋