Supermassive black holes rarely travel alone. Most large galaxies hide one at the center, and when galaxies collide, the two ...

For decades, scientists have been observing how galaxies spin and move throughout the universe. Gravity acts on stars and galaxies, in the same way it keeps you from floating off into space. Heavier ...

Scientists believe that when galaxies collide and merge, the supermassive black holes at their centers should eventually pair ...

Since the 1990s, astronomers have found a handful of other dwarf planets in the belt, such as Eris and Sedna, along with ...

A “disappearing” star in the Andromeda galaxy is the closest and best candidate for a newborn black hole that astronomers have ever seen ...

Astronomers have observed a rare event in the solar system, a comet slowing its rotation and then spinning in the opposite ...

First its rotation slowed between March and May 2017, taking 46 hours to complete a spin where it had once taken only 20 hours. This occurred as the comet neared its closest point to the sun, roughly ...

Enter the heads-up and off-world reality of the nonprofit B612 Foundation, which takes its name from Antoine de Saint-Exupéry ...

Researchers at Oxford University and the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) are ...

So cosmologists feel confident in modelling the universe using the “maximally symmetric” description of space-time in Einstein’s theory of general relativity. This symmetric vision for the universe, ...

As next-generation telescopes map this outer frontier, astronomers are bracing for discoveries that could reveal hidden planets, strange structures, and clues to the solar system’s chaotic youth.