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

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

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

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...

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

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

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.