Scientists Propose New Way to Find Aliens: Detect Their Failing Warp Drives

If an extraterrestrial warp drive collapses, we might be able to sense the resulting gravitational waves from Earth.

Trippy NASA Visualization Takes You Inside a Black Hole

The animation, which simulates the view of someone falling into a black hole, demonstrates how the bizarre objects warp light and space as you approach them.

Physicists Measure Gravity of Smallest Mass Yet

A bundle of magnets and glass had a slight but detectable gravitational pull, pushing scientists closer to the boundary between classical and quantum physics.

Nesting Doll Stars Proposed as Solution to General Relativity

Gravastars within gravastars would be a mind-blowing answer to a conundrum established by Einstein.

Hell Yeah, We’re Getting a Space-Based Gravitational Wave Observatory

Imagine LIGO, but flying through space. That’s LISA.

Mystery Object in Deep Space Is Confounding Astronomers

The super-dense object doesn't quite fit with what we know about black holes or neutron stars.

Physicists Say Time Travel Can Be Simulated Using Quantum Entanglement

“Whether closed timelike curves exist in reality, we don’t know."

Antimatter Reacts to Gravity in the Same Way as Ordinary Matter, Physicists Find

The result from CERN confirms expectations, but it's the first time gravity’s effect on the stuff has actually been tested.

Behold, Our Galaxy Visualized in Gravitational Waves

A visualization of simulated data shows how ripples of spacetime might populate the Milky Way.

Perplexing Pulsar ‘Switching’ Behavior Finally Deciphered by Astronomers

The spinning, dead star was emitting radiation in two modes, and a team of scientists believes it knows why.

Meet the ‘Event Horizon Explorer’, Which Aims to See Light Rings Around Black Holes

The Event Horizon Explorer would build on the work of the Event Horizon Telescope, which famously visualized a black hole in 2019.

Gravitational Waves Might Be Generated by the Debris Fields of Dying Stars

Cocoons of debris surrounding collapsing stars may generate gravitational waves detectable by LIGO.

A Massive Gravitational Wave Observatory Is Returning to Action

The LIGO-Virgo-KAGRA Collaboration will restart with renewed sensitivity this week following a three-year hiatus.

A Black Hole Star Could Be the Trippiest Object in Space

The theorized object warps spacetime like a black hole but still releases light.

Physicists Say They Made a Mini-Wormhole in the Quantum Realm

Pesky quantum behaviors are getting us closer to figuring out quantum gravity.

Astrophysicists Discover Closest Black Hole to Earth

The dense, dormant object is hiding in plain sight.

A Space-Based Gravitational Wave Observatory Is a Step Closer to Reality

The planned LISA mission would involve three spacecraft flying in formation over a million miles apart.

Black Holes Could Be Expanding Along With the Universe

The accelerating expansion of the universe could be affecting the size of black holes, according to a team of astrophysicists.

Physicists See Light Echoing From Behind a Black Hole for the First Time

The X-ray reverberations were predicted by Einstein's theory of general relativity.

Could Time Travel Ever Work?