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

This tilt determines how sunlight reaches different parts of Earth throughout ... Earth's tilt creates a delicate balance crucial for life on the planet, however according to recent news, this ...

Here’s what you should know when you go outside to see for yourself: Yes, the planets are indeed lined up across our sky. No, ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

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.