Astrophysics Research | MCQs

Explanation

Hydrogen is the most abundant element in the Universe.

Helium is second making up almost all of the remaining 25%. Oxygen is third most abundant element of universe.

Hydrogen and helium are by far the most abundant elements found in the Sun, making up about 98 percent of its mass.

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FIA VU ASSISTANT  02-01-2022

Explanation

• according to some scientists, 100 Billion galaxies are there in the universe
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• Hubble reveals an estimated 100 billion galaxies in the universe or so,
• but this number is likely to increase to about 200 billion 
  
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• IN 2021:
• a previous measurement by the Hubble Space Telescope suggested there were 2 trillion galaxies spread across the universe. But the latest discovery counts only hundreds of billions of galaxies instead
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• in 2022:
• The Hubble Deep Field, an extremely long exposure of a relatively empty part of the sky, provided evidence that there are about 125 billion (1.25×1011) galaxies in the observable universe.
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• Hubble is the name of the Space Telescope named by Edwin Hubble, in the 1920s
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