All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

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

The research, yet to be peer-reviewed, sheds light on what could have changed the orbits of several planets in the solar ...

January started out with a meteor shower and now has a planetary alignment in store. Here's what you'll be able to see and ...

This month offers incredible views of six planets, including Venus-Saturn conjunction. See the dates for all of 2025's ...

While the grand spectacle takes place next month, six of the seven planets will appear in the sky at once in a large ...

Finding physical evidence that our planet revolves around the Sun took some clever thinking to prove that this heliocentric model of our solar system represents reality. The idea is ancient.

However, while no such events took place on that date, nor on his revised date of Dec. 25, 1919, the seeds of anxiety and ...

The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun ...