Tagged: universe

Largest structure in universe discovered

Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretches 4 billion light-years from end to end. The structure is a large quasar group (LQG), a collection of extremely luminous galactic nuclei powered by supermassive central black...

The 1st stars in the universe formed earlier than thought

NASA’s upcoming James Webb Space Telescope might be able to ferret them out. The first stars in the universe formed even earlier than astronomers had thought, a new study suggests. Researchers probing the early universe found no sign of first-generation stars in galaxies that existed...

What’s the most amazing thing about the universe?

Perhaps the most powerful aspect of physics — and indeed perhaps the most amazing thing about the cosmos as a whole — is the universality of physical laws and theories. A few scant equations — small enough to fit on your favorite T-shirt — can...

Scientist calculates the ‘sad, lonely’ end of the universe

‘It’s like saying the word ‘trillion’ almost a hundred times.’ Stars will continue to explode long after the universe is cold and “dead,” one scientist determined in diving down the rabbit hole to find the last supernova that will ever happen. When the universe as...

Astronomers reevaluate the age of the universe

The universe is (nearly) 14 billion years old, astronomers confirm. With looming discrepancies about the true age of the universe, scientists have taken a fresh look at the observable (expanding) universe and have estimated that it is 13.77 billion years old (plus or minus 40...

How did the universe begin?

  “In the beginning” — before the 1920s, these words had no place in our scientific understanding of the universe. Astronomers believed the cosmos to be eternal and unchanging. We knew of only one galaxy and a few million visible stars, and this was the...