For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

The discovery of the exoplanet, a super-Earth called Kepler-735c, is all down to something called transit timing variations, ...

On its surface, floating solar appears to conserve water while generating carbon-free electricity. River managers are ...

Scientists say it’s important to research geoengineering – large-scale attempts to cool the planet to fight climate change – ...

When I found out my friend ‪@Postposterous‬ created Minecraft planets in Solar Smash! There are four new Solar Smash planets to destroy: Minecraft Steve Planet, Minecraft Pig Planet, Minecraft Grass ...

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new dwarf planet. It's called 2017 OF 201, a rock that appears to be some 700 ...

The TNO is potentially large enough to qualify as a dwarf planet, the same category as the much more well-known Pluto. The new object is one of the most distant visible objects in our solar system ...

That's the challenge scientists face when it comes to predicting solar storms. We've come a long way in understanding space weather. We can spot solar storm eruptions, track their speed ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to ...