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 ...

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 ...

The newfound exoplanet, called Kepler-139f, is a gigantic world roughly twice the mass of Neptune and 35 times the mass of ...

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 ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...