Scientists believe the Milky Way contains up to 400 billion stars and at least as many planets. The largest galaxy known, IC 1101, has more than 100 trillion stars. Step outside on a clear night and ...

Gravity is pulling more than just stars together - it’s dragging entire galaxies into violent encounters. The Milky Way is currently absorbing the much smaller Sagittarius Dwarf Galaxy, and the ...

More information: Shouzhi Wang et al, The structural and kinematical properties of NGC 5634, a globular cluster associated with the Sagittarius dwarf galaxy?, arXiv (2025).

A microquasar belonging to our Milky Way galaxy has set records by generating cosmic rays with energy levels never before seen.

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of ...

Bluish-white Regulus in Leo is moving toward the western horizon and sets around 10 p.m. in mid-July, followed a couple of ...

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

The Hubble Space Telescope captures the dwarf galaxy NGC 4449 in the constellation Canes Venatici (The Hunting Dogs).

The Hubble Space Telescope captures the dwarf galaxy NGC 4449 in the constellation Canes Venatici (The Hunting Dogs).

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Celestial objects known as dark dwarfs may be hiding at the center of our galaxy and could offer key clues to uncover the ...

Dark matter remains one of science's deepest mysteries. It makes up about 25% of our universe, yet scientists only observe ...