W.M. Keck Observatory imagery of star system HR 8799 have been time-lapsed. The system hosts four planets that are more ...

Have you ever wondered how long it takes for each planet to orbit the Sun? From Mercury’s blazing 88-day year to Neptune’s ...

WASHINGTON (Reuters) - They are the most common type of planet observed in our Milky Way galaxy - two to three times the diameter of Earth but smaller than Neptune, and orbiting closer to their stars ...

Earth has just acquired a new best friend in space – a small asteroid named 2025 PN7. Not quite a moon, it has been moving in quiet company with our planet for decades, pacing our planet in nearly ...

Astronomers spotted a young planet, WISPIT 2b, forming within a dusty ring around its star system, offering clues about the ...

Space scientists look back on 30 years of exoplanet discoveries — from rows of massive ‘super-Earths‘ to worlds with perfectly synchronized orbits. It was also the start of a whirlwind of discovery.

(CNN) — Astronomers have detected an exoplanet with a highly oblong orbit that experiences wild temperature swings — and it may be transitioning into another type of world. The exoplanet, named TIC ...

When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...

Our solar system now, once again, officially consists of only eight planets. Although largely debunked, speculation continued ...

Researchers are studying eccentric warm Jupiters, giant exoplanets that follow odd, elongated orbits unlike anything in our solar system.

NASA confirmed this week that the rock discovered by the University of Hawaii is the small asteroid 2025 PN7, which astronomers have confirmed as a quasi-moon- a rare type of celestial body ...

2025 PN7 is a small, dim asteroid that appears to orbit Earth, according to EarthSky. Believed to be a piece of the moon that ...