According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

The low carbon levels are particularly interesting, as previously discovered “pristine” or metal-poor stars generally ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

Our own planet represents a tiny fraction of the peculiar phenomena that can be found lurking throughout the cosmos, and every day astronomers turn up new surprises. In this gallery, we take a look at ...

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

Periodically, the European Space Agency (ESA) releases images that provide breathtaking views of the cosmos, courtesy of its ...

The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've observed in the universe so far.

This article, originally titled "The Man Who Discovered the Universe," is from the Summer 2025 issue of Air & Space Quarterly ...

Scientists using NASA's James Webb Space Telescope now think the "little red dots" in the early universe could be a new space object.

Pfalzner's models show that interstellar objects — bodies ejected from other star systems — could be captured by these planet ...