Suppose a Martian landed in Washington a couple of weeks ago, perhaps seeking clarity on Elon Musk’s intentions, and somehow ...

Scientists may have found a planet orbiting two brown dwarfs at a wild 90-degree tilt—something never seen before.

Scientists have identified an object about 700km wide inhabiting the frigid outer reaches of our solar system that might ...

For instance, Neptune migrated outward, switching places with Uranus, and pushed a lot of the small, icy bodies into the ...

In February 2025, a stunning planetary alignment–also known as the planet parade–allowed observers to see seven planets in ...

If Joe Biden slipped into senility, Donald Trump has fallen precipitously into it. He is the equivalent of the Alzheimer’s ...

Our solar system’s origin story spans billions of years and involves clouds of gas, cosmic collisions, and planetary ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago. Then the planets began to emerge, as the billions of particles of gas ...