Harvard astrophysicist Avi Loeb suggests interstellar object 3I/ATLAS could be far more massive than previously thought.

3I/ATLAS first made news in July when scientists confirmed it as the third-ever observed interstellar interloper in our solar system. The space object further attracted the public's fascination again ...

A black hole with a mass equivalent to 36 billion suns—10,000 times heavier than the one at the center of the Milky Way—has been discovered around 5 billion light-years from Earth. It may be the ...

NISAR, a giant orbiting antenna 39 feet in diameter, will monitor changes to glaciers, forests, and the Earth’s crust, providing data to help improve infrastructure and disaster responses.

"This is amongst the top 10 most massive black holes ever discovered, and quite possibly the most massive." About 5 billion light-years away from where you're sitting, in one of the most massive ...

NASA has issued a chilling update on the mysterious 'interstellar object' racing through our solar system. The visitor from another star, dubbed 3I/ATLAS, was first spotted on July 1 as it reached 420 ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and ...

"To do the bread-and-butter part of our job, as a scientist, the numbers that you send out have to really be well-measured, well-understood," Ajhar said. "And that takes a lot of time." Original ...

FILE — A Martian meteorite, weighing 54.388 lbs. (24.67 kg), said to be the largest piece of Mars on Earth, at Sotheby's, in New York, July 9, 2025. was sold for just over $5-million at an auction of ...