EVERYDAY SCIENCE

Detailed explanation-1: -All in all, Hubble reveals an estimated 100 billion galaxies in the universe or so, but this number is likely to increase to about 200 billion as telescope technology in space improves, Livio told Space.com.

Detailed explanation-2: -The Milky Way is the galaxy in which our Solar System lives. There are more than 200 billion stars in our spiral galaxy, and our Sun is just one of them.

Detailed explanation-3: -In 2021, data from NASA’s New Horizons space probe was used to revise the earlier estimate to roughly 200 billion galaxies (2×1011), Most galaxies are 1, 000 to 100, 000 parsecs in diameter (approximately 3, 000 to 300, 000 light years) and are separated by distances on the order of millions of parsecs (or megaparsecs).

Detailed explanation-4: -One such estimate says that there are between 100 and 200 billion galaxies in the observable universe. Other astronomers have tried to estimate the number of ‘missed’ galaxies in previous studies and come up with a total number of 2 trillion galaxies in the universe.