Something enormous may be hiding in the distant darkness of our own solar system, far beyond Neptune and Pluto. The proposed ...

Since the first discovery of a planet orbiting another star in 1992, some 280 alien solar systems have been identified. Most look quite unlike ours, and for good reason. Planets are mainly spied by ...

Over the past three decades, computer models of planetary system formation have gone from fairly crude representations to ...

From molten chaos to the planets we know today—see how our solar system transformed over billions of years and what forces ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s hiding in plain ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.

It may not feel like it, but everything in the universe is in constant motion. Our Sun, with all its planets, orbits the center of the Milky Way, flying through the cosmos at around 450,000 miles per ...

Estimating ages of specific events is one of the most difficult problems in astrophysics. While we have a precise (and probably accurate) age for the solar system, we do not have precise ages for each ...

Nasa's powerful James Webb Space Telescope is showing us something humankind has never witnessed firsthand before: The birth ...

And the earth was without form and void, and darkness was upon the face of the deep. Sometimes, if the night is dark and clear enough, you can look up and see the Milky Way in its arc across the sky.

We live in uninteresting times. Since the ructions that created the planets in the solar system’s first 100 million years (see “How was the solar system built?”) – and apart from an early migration of ...

On August 25th, 2012, humanity became an interstellar species. There was no fanfare or galactic welcome party as a humble robotic probe, the Voyager 1 spacecraft, crossed an invisible threshold. It ...