How have astronomers estimated the number of galaxies in the universe? Galaxies are vast collections of stars that populate our universe. But how many …
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Astonishing Facts About the Observable Universe
The Milky Way is on a collision course with the nearby Andromeda Galaxy, and both will merge in about 4 billion years.
How big is the universe around us? What we can observe gives us an answer, but it's likely much bigger than that. How big is the universe? It's one of …
Can we estimate the total number of stars? Looking up into the night sky, you might wonder just how many stars are in the universe. It's challenging …
Age may only be a number, but when it comes to the age of the universe, it's a pretty important one. According to research, the universe is …
This one's a real head-scratcher. Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of Ask a Spaceman and Space …
