How did Dimorphos form?

The otherwise unremarkable double asteroid of Didymos and Dimorphos made headlines as the target of NASA's successful Double Asteroid Redirect Test (DART) mission. With new details about the system emerging, astronomers have ...

Scientists unveil a unified theory for rocky planet formation

A new theory for how rocky planets form could explain the origin of so-called "super-Earths"—a class of exoplanets a few times more massive than Earth that are the most abundant type of planet in the galaxy.

Five things to know about the International Space Station

Russia is scrambling to bring home three astronauts—two Russians and one American—who are stuck aboard the International Space Station after a meteorite damaged the spacecraft that was due to return them to Earth.

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