Dark matter is one of the biggest puzzles in science. Although it makes up about 85 percent of all matter in the universe, it ...

A new set of data strengthens the case that dark energy’s influence on the universe—long believed to be constant—is actually ...

Astronomers have discovered the most monstrous supermassive black hole ever. At 36 billion times more mass than our sun, it’s so big it’s pushing back the boundaries of possibility. They’ve even had ...

Researchers are using supercomputer simulations grounded in Einstein’s relativity to test scenarios about what may have ...

For decades, scientists suspected this ion played a critical role in cooling the early cosmos, helping the first gas clouds ...

Astronomers have discovered an important piece of the puzzle of how supermassive black holes were able to grow so quickly in the early universe: a special kind of active galactic nucleus so ...

Pictures are the key to new insights in the field of astrophysics. Such images include simulations of cosmic events, which ...

The Atacama Cosmology Telescope could help resolve some cosmic discrepancies: How fast the universe is expanding and how evenly matter is distributed.

Determining exactly how galaxies such as these, which are essentially massive reservoirs of neutral gas, turn that gas into stars is a key missing piece of the star and galaxy formation puzzle.

Astronomers have come a long way in understanding how stars form today, but the question of how the universe's first stars formed is an enduring mystery. While the topic remains complex and ...