New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure ...

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

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

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

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

Since the 1970s, Voyager 1 has been making groundbreaking discoveries. But its journey is far from over, and it's still ...

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 of massive ‘super-Earths‘ to worlds with ...

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

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, ...

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...