In a universe governed by turbulence and chaos, perfection is rarely more than a mathematical ideal. Yet astronomers are puzzling over a newfound object that seems to defy that rule: a glowing, nearly ...

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).

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

Scientists predict up to 100 invisible galaxies may orbit the Milky Way, hiding just beyond our current detection limits.

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

New simulations suggest that dozens of ultra-faint “ghost” galaxies may be orbiting the Milky Way, hidden from current ...

The Andromeda Galaxy, located 2.5 million light years away, has fascinated observers for centuries. Once believed to be part of the Milky Way, everything changed in 1923 when Edwin Hubble identified ...

UTSA researchers offer alternative to dark matter model in dwarf galaxies JUNE 11, 2025 — Groundbreaking research led by UTSA graduate student Nathaniel Lujan and Karl Gebhardt, UT Austin professor ...

The answer: There are approximately 2,000,000,000,000 galaxies in the universe – that’s 2 trillion. Astronomers don’t know ...

Our Milky Way could have many more satellite galaxies than we've detected so far. They're just too faint to be seen.