YR4 has a 2% chance of hitting Earth in 2032. Astronomers are tracking it to refine estimates of its size and orbit to see how much of a risk the space rock poses.

Astronomers used an array of telescopes to find the most massive radio jet in the early universe. The celestial object is ...

The Largest 'Black Hole Jet' Discovered Is Estimated to Be Twice the Size of Our Milky Way We know black holes to be ...

An international team of physicists has successfully measured the size of a certain type of neutrino to a certain degree. In ...

An curved arrow pointing right. Neil deGrasse Tyson explains some of the biggest misconceptions we have about the universe. Produced by Darren Weaver and Kamelia Angelova. Additional production by ...

(THE CONVERSATION) A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by ...

Scientists have discovered the largest known structure in the universe, a massive superstructure named Quipu. This enormous cosmic formation weighs an astonishing 200 quadrillion times the mass of the ...

You may like 'Cosmic inflation:' did the early cosmos balloon in size? A mirror universe going backwards in time may be a simpler explanation 8 of the greatest mysteries in the universe Suddenly ...

Scolnic, an associate professor of physics at Duke University, explains it as trying to build the Universe's growth chart: we know what size it had at the Big Bang, but how did it get to the size ...

DC Comics' Absolute Universe will double in size with three new titles soon making their debut. Absolute Green Lantern, Absolute Martian Manhunter and Absolute Flash will all premiere in March 2025.