A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

A fast radio burst, or a strong pulse of energy, was tracked to a distant long-dead galaxy that astronomers never thought ...

Only 0.1% of this galaxy is made of matter; the other 99% is unknown to humanity. Researchers: Dark matter accounts for ...

Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

A Distant Supernova Discovery This latest image from the Hubble Space Telescope features a distant galaxy located about 600 ...

Ultra-faint dwarf galaxies, cosmic 'ghost towns,' offer new insights into the early universe and star formation.

But researchers have used the James Webb Space Telescope, a collaboration of NASA and its European and Canadian space ...

New evidence suggests the universe is expanding faster than predicted. Explore the Hubble constant and its implications for ...

The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth ...

Astronomers have detected fast-repeating radio bursts from a distant "dead" galaxy that should not contain the energy to produce these types of signals.

Leo P, a tiny galaxy, stopped making stars after the universe’s reionization. Unlike most galaxies, it restarted billions of ...

Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...