Space
The largest known galaxy is wider than 17 Milky Ways
Scientists have identified the edge of galaxy IC 1101 and crowned it with the title of largest known galaxy.
Astronomy
More Stories in Astronomy
- Astronomy
What kinds of black holes exist — and how are they different?
Scientists have identified four types of black holes, classified mostly by their masses. But these mysterious objects continue to challenge our understanding of the universe.
- Astronomy
A newly found world blurs the boundary between planet and moon
The object orbits a brown dwarf that orbits a star, and astronomers aren’t sure if it’s a planet, a moon — or something else entirely.
- Astronomy
This “exotic weirdo” exoplanet has a rocky surface and an atmosphere
Astronomers found a helium atmosphere around a rocky exoplanet — a good sign for the search for life outside the solar system.
- Astronomy
A quasar breaks the record for most distant supermassive black hole
The Euclid space telescope discovery could help researchers understand how black holes grew so massive so quickly in the early universe.
- Planetary Science
Meet the Milky Way’s puffiest planets
Two “superpuff” planets orbiting a sunlike star over 1,000 light-years from Earth are as big as Jupiter and as dense as cotton candy.
- Space
Pluto has landslides
New Horizons data reveal Pluto’s first six confirmed landslides along steep crater rims.
- Astronomy
Even quiet black holes create winds, new Milky Way observations reveal
New observations suggest the supermassive black hole at the Milky Way’s core is blowing gas away from the central behemoth.
- Astronomy
Astronomers may have found a record-breaking pair of black holes
At some 60 billion times the mass of the sun, this dark void could be home to a pair of black holes that are due for a cosmic collision.
- Astronomy
The earliest evidence of the first stars may lie in a distant gas clump
James Webb data reveal pristine gas irradiated by energetic light some 450 million years after the Big Bang — a sign it may house primordial stars.
