Could a comet passing through the inner solar system be older than the Sun itself? That question sits at the center of the ...

The small, icy visitor now racing away from the inner solar system is not just another comet. It is an interstellar object, ...

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 ...

A new technology is allowing astronomers to take sharper than ever photographs of the night sky, revealing secrets of the solar system and the universe beyond. A close-up of the central region of the ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

Launius, Roger D. 2009. [Book review] "Planetology: Unlocking the Secrets of the Solar System." Quest: The History of Spaceflight Quarterly, 16, (1), 64–64.

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Our solar system has been around for 4.6 billion years. While that sounds like a long time, it's ...