This discovery marks the first known case of a compact planetary system with such a noticeable tilt between close planet ...

A new investigation into old Kepler data has revealed that a planetary system once thought to house zero planets actually has ...

The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain ...

James Webb’s mid-infrared vision has likely captured a frigid, Saturn-mass planet shaping the dusty rings around the nearby ...

Sedna will make its closest approach to the Sun in 2076, giving us a rare opportunity to visit the planetoid before it drifts ...

"We would need to consider the possibility that the source was created (or trapped as a primordial black hole) by a highly advanced technological civilization," Harvard's Avi Loeb writes.

"Returning the scientifically selected samples that await us on Mars, as part of a balanced portfolio, will help to ensure ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

This concept paper contributes to the broader thinking underway for the 2026 Human Development Report, which will explore ...

Astronomers from the University of New Mexico, along with U.S. and international researchers, have confirmed the existence of ...

A new SwRI-led paper highlights the scientific progress made in understanding the evolution of terrestrial planets, including the effects of late large impacts on pre-existing modes of tectonics ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.