Biology, asked by pt398, 1 year ago

why do star twinkle​

Answers

Answered by dhruvbadaya1
0

As light travels through the blanket of air around our planet, it is diffracted (bounced around) causing a quick apparent dimming and brightening — a star's signature "twinkle".

While some stars do physically change in brightness over time, they typically do so on long timescales — amateur astronomers monitor these changes sometimes over hours, but more often over days, weeks, or years. These variable stars are well studied and often signal complex physical changes happening to the stars in question.

The more rapid changes of scintillation, on the other hand, come about long after the light has left the star. Light waves traveling through Earth’s atmosphere diffract as they pass through pockets of air at different temperatures. Because the light waves come from a single point, this effect can make the star’s brightness and/or position appear to change.

Answered by tanmoyvestige
1

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We know that the stars emits their own light called starlight due to this they shine on the sky . In other words twinkling is not caused by the stars which are super constant in their brightness it is caused by the earth's atmosphere, as the light  from a star travels towards the earth through the atmosphere it passes through many layers of air varying temperatures and densities . Each of the boundaries of those layers of air refracts the light bending in a slightly direction from moment to moment. So the starlight zigs and zags passes from the star to the telescope on the ground .From our perspective this makes the star appears to be twinkle .

                                                                                                                                 

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