Bumblebee gravity could explain dark energy — if it's proven true.

According to a recent report, there have been no signs of supersymmetry, and the theory is looking a little shaky.

New research proposes that the first black holes came from clumps of gravitinos, exotic, hypothetical particles that managed to survive the first chaotic years of the Big Bang.

A team of physicists recently used a string-theory technique to reveal that we're on the cusp of detecting phase transitions in the early universe through their gravitational wave signature.

What if there is more than one cosmological agent for dark energy? This mixture would have strange effects in our universe, making it potentially detectable with upcoming surveys.

A massive jet launched from our galaxy's supermassive black hole may have destroyed any red giant stars that wandered into its path, a new study suggests.

It's easy enough to say what a star is: one of those bright pointy things that twinkle in the night sky. But the actual definition of a star is as rich and colorful as the stars themselves.

You wouldn't know it by looking at it, but the moon is a time capsule.

The truth is, astronomy remains as real, human and relevant as ever, though the reason why might surprise you.

The formation of the solar system is a challenging puzzle for modern astronomy and a terrific tale of extreme forces operating over immense timescales. Let's dig in.

A hypothetical particle known as the ultralight boson could be responsible for our universe's dark matter.

If teensy black holes could be produced inside the world's largest atom smasher, the Large Hadron Collider, that would be a boon for physics.

What if black holes aren't black holes at all, but rather the cosmic equivalent of fuzzy, vibrating balls of string?

Black holes shorn of event horizons could lurk throughout the universe.

The EmDrive doesn't just violate our fundamental understanding of the universe; the experiments that claim to measure an effect haven't been replicated. When it comes to the EmDrive, keep dreaming.

A pair of astronomers is advocating a daring new research program: to turn our widening search for life beyond Earth into a hunt for dark matter.

Our sun's death is a long way off — about 4.5 billion years, give or take — but someday it's going to happen, and what then for our solar system?

At the center of a black hole, matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down.

Physicists suggest harnessing the gravitational pull of black holes to create ferocious particle accelerators. The trick? Carefully set everything up so the particles don't get lost forever.

In one upside-down, hypothetical version of the universe, a bizarre type of black hole could exist that is stranger than an M.C. Escher sketch: charged black holes.

Black holes can get big … really big. But just how big? It's possible they could top out at over a trillion times more massive than the sun.

A recent survey sheds some light on what the mighty Aztecs thought about the rare and wonderful solar eclipses.

The giant planet's long-ago migration likely had big impacts.