President-elect Donald Trump was blocked by his wife's hat when he leaned in for a kiss before his swearing in on Jan. 20.

Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...

"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners ...

This is called the “heat death” of the Universe, but you can think of it instead as the death of heat. There will be no more ...

New research confirms the Universe is expanding faster than theoretical models predict, intensifying the Hubble tension.

Found less than a billion years after the Big Bang, these massive objects are upending astronomers’ timeline for how early ...

The universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous—and highly ...

Astronomers compile a large sample of an unusual class of objects in an effort to connect the dots to the early universe.

Water is the essence of life. Every living thing on Earth contains water within it. The Earth is rich with life because it is ...

Ultra-faint dwarf galaxies, cosmic 'ghost towns,' offer new insights into the early universe and star formation.

Mayim Bialik shared her thoughts on 'The Big Bang Theory' spinoff, including whether she's open to reprising the role of Amy ...