Imagine shrinking Earth to the size of a small ball to reveal just how vast the Universe is. If it were 12 centimeters wide, Jupiter would stretch over a meter across beside it. But the Sun would be ...

Earth has a group of cosmic stalkers. Known as "co-orbitals," these small bits of rock have a 1:1 mean motion resonance with ...

An asteroid named 2026JH2 will swing by Earth on Monday, passing four times closer than our distance to the moon.

Humanity’s relationship with the moon has always been simple. One planet, one moon — a cosmic partnership as reliable as sunrise. But that clarity just got murkier. Astronomers have confirmed ...

There are parts of the universe, and of the electromagnetic spectrum, that we’re not covering with our telescopes—but not as many as you might think!

During five nights in December 2019, a group of researchers used the DECam camera, installed on the 4-meter Blanco telescope at Cerro Tololo (Chile), to observe a specific field of the Large ...

Richard Binzel has been watching the skies for hazardous asteroids for more than 50 years. In 1995, he proposed the Near-Earth Object Hazard Index, later renamed the Torino scale, which rates ...