Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar system. It’s an unprecedented ...

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

If our species manages to hang on for a few billion additional years, we might be in for a wild ride — stars passing in the vicinity of the sun could cause planets in our solar system to collide ...

The sun is unique in that it's the only star in our solar system. Up to 85% of stars have at least one companion star. The sun contains over 99% of the mass of our entire solar system.

Fans of the sun-centered solar system will want to down a few Zywiecs in honor of Polish astronomer Nicolaus Copernicus, who was born on Feb. 19, 1473. That would make him 536 years old – an age ...

What is a solar flare? A solar flare is a burst of radiation on the sun, according to NASA. They are the most powerful explosions in the solar system, with the biggest ones having as much energy ...

Pluto was reclassified as a dwarf planet in 2006. Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be hidden far into the solar ...