2007-02-02 03:06:20 · 19 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
when the light from stars start and reaches the earth, it becomes very weak. And it when passes through our atmosphere it gets reflected and it appears to us as twinkling stars.
2007-02-03 16:48:41 · answer #1 · answered by ♥ ΛDIƬΥΛ ♥ ııllllııllıı 6 · 0⤊ 0⤋
It's not that gases in the stars collide against each other and we see the explosion (that's the misconception everyone has). The density of atmospheric air decreases as we go out of space. The density of air in the earth at surface is maximum and it gradually changes to 0 where atmosphere ends. The refractive index of atmosphere constantly changes from 1 to 1.003 as a result the ray emitted from the star comes from rare medium (space) to denser medium (atmosphere) and the ray constantly bends towards the normal. The convection currents in air changes the density of air. As a result the star seen by us are given a very slight shaking appearance which gives us the impression of twinkling.
2007-02-02 04:15:42 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere.
Stars (except for the Sun) appear as tiny dots in the sky; as their light travels through the many layers of the Earth's atmosphere, the light of the star is bent (refracted) many times and in random directions (light is bent when it hits a change in density - like a pocket of cold air or hot air). This random refraction results in the star winking out (it looks as though the star moves a bit, and our eye interprets this as twinkling).
2007-02-02 03:16:47 · answer #3 · answered by arup s 6 · 1⤊ 0⤋
Stars do not really twinkle. It is just because of REFRACTION-the bending of light rays when they enter from one material to another. The rays of light from those stars bends in different directions so,they appear to twinkle.
2007-02-02 03:18:24 · answer #4 · answered by Harry Potter 3 · 1⤊ 0⤋
It is a shimmering effect caused by the atmosphere, similar to the shimmering heat waves you can see in the distance on a hot day. Distant streetlights (miles away) twinkle in the same way and for the same reason.
2007-02-02 03:14:58 · answer #5 · answered by campbelp2002 7 · 1⤊ 0⤋
it is only due to refraction of light. when light travels from the stars to earth on the observer eye, iit bends too many times, some times towards the normal when travelling from rarer medium to denser medium and vice versa. in this case air has different densities whose value changes w.r.t. height from the earth surface. so an observer from earth surface can never see the ray of light travelling in a straight line. hence star appears to twinkle at night.
2007-02-02 04:29:02 · answer #6 · answered by Anonymous · 0⤊ 0⤋
They "twinkle" because its a huge burning ball of gas lightyears away. When we look at the night sky we see a lil dot that twinkles, but its actually the constant burning that gives it the twinkle effect..
Like looking at a fire, it doesnt stay perfectly still. The fire roars and moves. From lightyears away it looks like twinkling.
2007-02-02 03:15:59 · answer #7 · answered by Nobody 2 · 0⤊ 1⤋
they do not twinkle
stars emit their own light and due to the earth's atmosphere, they seem to twinkle
2007-02-02 03:22:27 · answer #8 · answered by cool girl 1 · 1⤊ 0⤋
The gasses that are burned on a star burn at different colors, due also to the changing temperatures, giving it kind of a candle effect. If you are looking at the star with your naked eye or by any other means than a space telescope, the interference gasses in our own atmosphere may also be factors.
2007-02-02 03:32:29 · answer #9 · answered by ? 3 · 0⤊ 1⤋
stars have the ability 2 absorb the sun's light due 2 their magnetic field and also due 2 the reflection of a star with the other
2007-02-02 03:11:29 · answer #10 · answered by venky 2 · 0⤊ 1⤋