How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the ...

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This is the last of three blog posts associated with this week’s episode of Cosmos: A Spacetime Odyssey, which addresses life in the universe. Read the first and second here. Someday, in the not too ...

Weather permitting, SpaceX Falcon 9 may be visible in the sky beyond Cape Canaveral, Florida, after liftoff. Nighttime launches can offer unique photo opportunities as the rocket illuminates the dark ...

Scientists at TU Wien have uncovered that quantum correlations can stabilize time crystals—structures that oscillate in time without an external driver. Contrary to previous assumptions, quantum ...

The vast majority of matter is dark – invisible until it is detected only through its gravitational effects. The newly discovered object could be a clump of dark matter, or it could also be a compact, ...

Update for 8:42p.m. ET: SpaceX successfully launched its Starship Flight 11 rocket into space, with its Super Heavy booster making a planned - and controlled - splashdown in the Gulf of Mexico. The ...

Shares of AST SpaceMobile Inc (NASDAQ:ASTS) are surging this week following a roller-coaster of news that ultimately left investors optimistic. Here’s what investors need to know. This landmark deal ...

Peering into deep space, NASA's James Webb Space Telescope has helped astronomers find places to study gravitational lensing, an effect in which massive objects such as galaxies warp space-time itself ...

The universe may not only be geometry and energy—but also memory. And in that memory, every moment of cosmic history may still be written. For more than a century, physics has been built on two great ...

Black holes are born from the collapse of giant stars and grow by gorging on gas, dust, stars and other black holes. For some of these gluttonous space-time ruptures, friction causes the material ...