A small world 4.5 times Earth's mass is circling its star in the wrong direction. Normally there's a bully nearby to blame.

The Moon normally sits around 384,000 km from Earth and orbits at more than 1 km/s. At that speed, the transcript says that ...

The Earth orbits the Sun. Then why doesn't the Earth fly away from the Sun into the depths of space? The one who provided the ...

A team of researchers including those from the University of Tokyo spotted a rare kind of planet that’s unusually hot and ...

Blueprint for Planetary Intelligence] Vol. 29 Late Heavy Bombardment: Delivery of Volatiles (Water and Organic Matter) from ...

Explore rogue planets, unbound worlds drifting through interstellar space. Discover their mysterious origins, potential for ...

In a new study, astronomers detail observations of what could be the first known exosatellite - a natural object orbiting a ...

It is a misconception widely entertained, even by some of its cleverest practitioners, that science is engaged in the pursuit ...

ESA JUICE Earth flyby arrives Sunday, September 28 at 7:45 a.m. ET: the Jupiter-bound probe will skim 5,369 miles from Earth's surface and capture a free 2.2-mile-per-second speed boost via gravity ...

ALMA planet formation study confirms first gas-wake detection beside a photographable protoplanet. New observations of WISPIT ...

OHB has activated a probe that ESA and JAXA plan to send to a near-Earth asteroid in early 2028. The mission serves planetary defense.

ESA] The European Space Agency’s Jupiter Icy Moons Explorer (Juice) will return to Earth on 28 September, with flight ...