Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

The path of totality will carve an arc of darkness across the surface of our planet – at the height of the August tourist ...

Virts, formerly commander of the International Space Station, is running for a Senate seat in Texas as a Democrat.

It is this tension between maintaining the unum amid our multiplying pluribus that is reflected in the religious skirmishes ...

Omotola Osude, a Nigerian legal scholar and climate justice advocate, is raising an alarm that is being heard far beyond her ...

A Pulitzer Prize-winning weekly covering West Marin, including the towns of Point Reyes Station, Inverness, Bolinas, Stinson Beach, Marshall, Nicasio, Lagunitas, Woodacre, San Geronimo, Forest Knolls, ...

Centimeter-sized pebbles have been detected in protoplanetary discs using e‑MERLIN, filling in a critical phase of planet ...

What if there’s a planet hiding in our solar system, 10 times larger than Earth? While this theory has yet to be confirmed, ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

For many of us, the idea of a solar system with just eight planets is a fundamental concept in science. However, since Pluto was reclassified as a dwarf planet in 2006, Neptune has stood as the last ...

Astronomers have spotted centimeter-sized “pebbles” swirling around two infant stars 450 light-years away, revealing the raw ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.