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

February will be an awe-inspiring month for astronomy enthusiasts who will be able to the see the solar system's planets ...

Have you ever wondered why the planets in our solar system align along a flat plane? Discover the science behind this cosmic arrangement, from the formation of the protoplanetary disk to the forces ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

Canadian astronomers have taken an extraordinary step in understanding how planets are born, using the James Webb Space ...

In January and February, a spectacular planetary parade will be visible in the night sky. The celestial alignment of Venus, Mars, Jupiter, Saturn, Uranus, and Neptune reaches its peak on January 29, ...

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

one which can offer superb views of the other bodies in the solar system. But which one to choose? We've got you covered with our guide to the best telescopes for seeing planets. Now's a great ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system. These embryos, somewhere between small planetesimals and fully formed planets ...

In May 2024, an epic solar storm rattled Earth so powerfully that its effects were felt even at the bottom of the ocean.