On Sept. 26, 2022, NASA's Double Asteroid Redirection Test craft smashed into its target, the hazardous asteroid Dimorphos, and raised hopes that a space rock could be deflected from a collision course with Earth.

Carnegie Science astronomer Scott S. Sheppard discovered the asteroid on September 27 with the Dark Energy Camera on the National Science Foundation's Blanco 4-meter telescope. That telescope searches for killer asteroids, and 2025 SC79 certainly qualifies. 2025 SC79 is about 700 metres (2,300 ft) in diameter.

Contrary to online rumors, Earth still only has one true moon, but astronomers have discovered a so-called 'quasi-moon.' Here's what it is.

This article originally published at Earth just got a new companion in space. It's sticking around for 60 years.. A one-way trip to the Mars usually takes you about 9 months to complete, but one team out of Russia thinks they can knock that down to 30 days. "It felt like I was watching the sandworms in the film 'Dune.'"