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One estimate is that there are 1010 stars in the Milky Way galaxy, and that there are 1010 galaxies in the universe. Assuming that the number of stars in the Milky Way is the average number, how many stars are in the universe?
I assume that your 1010 means $10^10$. Then the number of stars is simply $10^10*10^10=10^20$.
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Why are there so many dwarf stars (red and white) among the nearest stars, but none among the brightest stars?
There is a different story for each type of dwarf star that we cannot see. if you are considering Proxima-Centauri, Proxima-Centauri though is the closest Star to but at the...
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How do stars form into a constellation?
Only few stars are in real groups like Pleiades . Only from our vantage point we see them in groups.Such groups we constellations...
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If black holes can swallow entire planets and stars, where do the planets and stars go?
At the singularity, the boundary of a black hole the laws of physics change to the laws of quantum mechanics. Time stops within a black hole, and space as we...
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What enables stars to pulsate?
Scattering is ineffective on the thick bundle of solar rays. So, sun does not pulsate. Astronauts in International Space Station (ISS) do not see any 'Twinkle Twinkle little stars'.
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Why does the tilt of the earth affect the amount of light and therefore the seasons?
How are the seasons affected by the tilt of the equator?
First of all 's axial tilt angle and direction are constantly changing due to precession. These effects are small and are only noticeable over long periods of time. We will...
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How far away from the sun are we during the four seasons?
The starting and end dates for the seasons are 21 or 22 or 23 of the respective month. Significantly, they start at equinox/solstice and end at solstice/equinox. At the start...
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Why is the length of day different in different seasons?
Technically, the day does not get shorter, but daylight gets shorter. That's because of 's rotation. When the earth rotates in a certain way, the daylight gets longer and shorter.
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During which seasons are the earth's axial tilt and distribution of sunlight the same?
Sun light falls vertically on equator. picture source
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What are 6 major stars in the constellation Ursa Major?
most stars have Arabic names. diagram from Wikipedia.
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