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

This alignment will give people an opportunity to see multiple planets at once, but the difference will not necessarily be visible to the naked eye. Cunnama says this is an interesting event, ...

Mercury joins the night sky to complete a 7-planet alignment just after sunset for the end of February. Saturn leaves our ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

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

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike ... could reshape our understanding of the Earth-Moon system and the broader solar system.

While claims of a “rare alignment” are overblown, you can still see up to six planets in the night sky this weekend. Here's ...

For much of January and February, you have the chance to see six planets in our solar system after dark, although two — Uranus and Neptune — will be hard to see without a telescope or high-powered ...