The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

"With an orbital period of 570 days, it is a relatively cold gas giant planet," said Guðmundur Stefánsson of the University ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

James Webb Space Telescope captures HH 30’s disc, revealing dust movement, jets, and planetary formation processes.

Mercury takes only 88 Earth days to orbit the sun.

The south polar region of Mars When it was shared: Jan. 29, 2025 Why it's so special: These odd, fan-like features on the ...

Welcome to this month’s edition of “What’s up in the sky?” February has a nice lineup of planets and some eye-catching ...

Our modern era of space observation and exploration deepens our connection with the universe—and with each other. When NASA ...

New findings offer clues about the ancient origins of asteroids and their potential role in the formation of terrestrial ...

This week sees a special stargazing event, as as up to six planets will be visible in a line in the night sky.