How can a galaxy display perfectly defined spiral arms when the Universe had only a little over 10% of its current age? This ...

In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big ...

One such occasion occurred earlier in 2025, when NASA scientists reported sightings of a supernova that exploded when the ...

A team of astronomers using a variety of ground and space-based telescopes including the W. M. Keck Observatory on Maunakea, ...

For much of the twentieth century, scientists expected the expanding universe to slow over time. The opposite turned out to ...

Depending on how you look at it, the universe might not have an "end," after all. Whether the universe will "end" at all is ...

The universe’s expansion might not be accelerating but slowing down, a new study suggests. If confirmed, the finding would upend decades of established astronomical assumptions and rewrite our ...

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a key turning point in the universe’s development, known as the Cosmic Dawn.

By studying faint distortions in galaxy shapes across a vast region of sky, scientists probed the hidden structure of the universe. In the standard picture of the universe, nearly everything is hidden ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

A virtual event, "Astronomy Unlocked: How to Choose Your Best Telescope," is scheduled for November 20, 2025, at 9:00 am EST, designed to provide a comprehensive guide to selecting astronomical ...