define about visible twinkling stars deeply?
Answers
we know that diff. layers of earth have diff. temperature as light comes to stars and enters to diff. layers of earth it starts to bend and we get a apperant position of stars .
due to continuous change in the temperature of atmosphere we continuously get apparent position of stars. hence, stars twikle at night
During cold February nights, the twinkling of bright stars is especially striking; sometimes they seem to shatter into dazzling shards of blue, red, and green,” Teske says. “While the vivid display delights most star watchers with its movement and color, the twinkling interferes with delicate observations made by astronomers.”
Twinkling of stars—called “scintillation” by astronomers—is caused by moving air currents in the atmosphere. The beam of light from a star passes through many regions of moving air while on its way to an observer’s eye or telescope. Each atmospheric region distorts the light slightly for a fraction of a second.
“The total result of a great number of momentary small distortions is the twinkling that we see,” Teske explains. “Although these atmospheric motions are present all the time, they are especially noticeable on cold winter nights.”