Certain extreme planets are called ultra-short period objects if they're very close to their stars and orbit them in mere hours, like K2-22b.

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

NASA and other space agencies are tracking 2024 YR4, a near-Earth asteroid with a small chance of impacting our planet in ...

NASA is working on an exciting mission to send humans to Mars in the next few decades. To make this happen, the agency is ...

Set to launch within a few months, NISAR will use a technique called synthetic aperture radar to produce incredibly detailed ...

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that ...

2024 PT5 is the second near-Earth asteroid scientists suspect was ejected from the moon's surface, the first being 469219 ...

Because planets always appear in a line, the alignment isn't anything out of the norm. What's less common is seeing so many ...

Scientists say the unfolding El Niño event superimposed on long-term global warming is a primary driver of this huge spike in ...

An asteroid that orbited near Earth for a few months as a mini-moon may be a chunk of the moon that was blasted off by an impact thousands of years ago.

An asteroid the size of a school bus is set to zoom by the Earth on Tuesday, traveling several times faster than a speeding bullet. The asteroid, named 2025 BS4, is said by NASA's Jet Propulsion ...