Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

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

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

"It's really difficult to explain the solar system without Planet Nine but there's no way to be 100 per cent sure [it exists] until you see it." With the sun from its distance likely to look ...

planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth. Our planet is just the right distance from the ...

But in reality, our Solar System’s disk is far from flat ... object’s closest approach to the Sun must have been less than 20 AU (1 AU is the distance between the Earth and the Sun). If there really ...

The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting ...

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Computer simulations suggest that there is an undiscovered Earth-like ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational ... In general, as the distance from the Sun increases: the temperature decreases, for example, Mercury is 430 ...

During this astronomical phenomenon, four planets will be visible to the naked eye in the first couple of hours after dark, according to NASA: Venus and Saturn in the southwest edge of the sky, ...