How is it that galaxies merge and collide but the universe is expanding and everything is moving away from everything else? Justin HammersleySterling Heights, Michigan Whether or not galaxies merge ...

Astronomers produced the most complete map of the center of the Milky Way, which can provide insight into how stars and planets are formed.

For 'Stitched Stories" exhibit Charity Myers uses digital collage to revisit fragments collected over decades and layer them ...

Scientists have known for nearly a century that the universe is expanding, with galaxies moving away from each other over time. The speed of this expansion today is called the Hubble constant. But ...

Seen as it was 8.5 billion years ago, the galaxy shows that the early universe was harsher than scientists previously thought ...

Astronomers with the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) have used data from the project to make the ...

Here's what we know so far about the US and Israel's strikes on Iran, which led to counterattacks and fears of a wider regional war.

When most people think of a supernova, they're thinking of a Type II core-collapse supernova. These are massive stars that have reached the end of their time on the main sequence. They've used up ...

When black holes collide, the crash generates ripples in the fabric of spacetime—gravitational waves. These distortions ...

Afghanistan and Pakistan are fighting again, trading deadly shelling and mortar fire across their rugged border, with ...