NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision between ...

Because it doesn't interreact with light or electromagnetism, dark matter exists to us only through its influence on visible ...

More than $10 billion in funds are included in Trump’s tax and spending bill for NASA programs previously targeted by the president after Sen. Ted Cruz led a Senate amendment to rescue them.

Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of ...