Voyager 1 has been exploring the cosmos for decades, but when it reached the edge of the solar system, it found something very strange and very hot.

Viewed from orbit, Jackass Flats — situated in southern Nevada about 65 miles northwest of Las Vegas — could easily be ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

We actually know very little about what's going on inside Uranus and Neptune, causing researchers to propose that these ...

While Saturn 's magnificent rings, spanning 175,000 miles (280,000 kilometres), are a familiar celestial marvel, scientists have now reported a groundbreaking discovery: the first observation of a ...

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure if the gas is contained within a wispy atmosphere or being ejected into ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and Earth. The authors dubbed it Planet Y.

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

Space scientists look back on 30 years of exoplanet discoveries — from rows ... There are ‘super-Earths’ and ‘mini-Neptunes’ — categorized because of how their masses compare with those of planets in ...

Eight planets travel in circular paths around a burning ball of gases, called the Sun. Welcome to our Solar System, our space ...

Voyager 1 is about to go where no human-carrying spaceship has gone before. June 15, 2012— -- Fifty-five years after humans first escaped the bounds of Earth and launched a satellite into orbit, ...

This long-duration comet will make its closest approach to Earth this fall, before disappearing into the outer solar system ...