Our universe’s earliest moments are the hardest to explore. But they hold the key to understanding the cosmos.
In a trillionth of a trillionth of a trillionth of a second, our universe underwent a growth spurt that shaped the structure we see today.
The universe forged the first elements within minutes of its birth through the process of Big Bang nucleosynthesis.
For millennia, a hydrogen fog permeated the universe, trapping light.
They lived fast, died young, and seeded the cosmos with material for future generations.
About 13 billion years ago, our galaxy formed in the wake of the Big Bang.
Researchers know how the Sun shines — but how did it form?
An asteroid impact may have killed the dinosaurs, but earlier cosmic strikes could have helped spawn life in the first place.
Possibilities for extraterrestrial life seem limitless, but a few scientific rules can help us find it.
Astronomers once thought the universe could collapse into a Big Crunch. Now most agree it will end with a Big Freeze.
The universe isn’t just expanding, it’s accelerating.
The afterglow of the Big Bang reveals the geometry of the universe.
Long after the last stars fade, black holes will herald the end of the universe with a spectacular show of fireworks.
Everything — from creatures to stars to black holes — will eventually decay into nothingness.