A subtle gravitational-wave “hum” from merging black holes may help settle the cosmic fight over how fast the universe is ...

An international team of astronomers using NASA's Hubble Space Telescope has discovered the aftermath of what some call "galactic cannibalism:" the aftermath of a 100 million-year-old cosmic collision ...

Using gravitational waves as a measure of the universe's rate of expansion could solve the biggest headache in physics, the ...

What does it look like when galaxies collide? The Hubble Telescope captured a unique sight as two galaxies are in the process of merging. NASA says the galaxy, called NGC 1614, is about 200 million ...

This illustration provided by NASA in December 2025 depicts the aftermath of a collision between two massive space rocks orbiting the star Fomalhaut. (NASA, ESA, STScI, Ralf Crawford, Space Telescope ...

The Universe is continually expanding, and scientists measure its expansion rate, the Hubble Constant, using two main methods: electromagnetic methods (using light from stars, galaxies, or supernovae) ...

NASA’s Hubble Space Telescope got a rare look at the aftermath of two cosmic collisions — and helped scientists solve a decades-old mystery. Many years ago, scientists saw a dense, bright spot near a ...

NASA's Hubble Space Telescope has spotted fresh clues around a nearby star that strengthen the case that an object previously seen there was not a planet but an enormous space crash. A team of ...