A baby galaxy is throwing one heck of a tantrum, and it's shaking up our understanding of the earliest galaxies.

The observable universe is only a fraction of the total universe, which may extend at least 400 times farther and possibly go ...

A rare alignment between Earth and Saturn will make the gas giant’s rings appear so thin that they’ll be nearly invisible.

In the constellation Cygnus, a bright knot of stars seems to adorn one edge of a nearly perfect 20-light-year-wide circle, ...

Researchers are puzzled as to how the dwarf galaxy NGC 6789 continues to make new stars, despite being stuck in the ...