An overview of one of international space law’s foundational documents.

From visionary technologies to unusual planetary views, this week’s Downlink will challenge your imagination.

The observatory will directly image Earth-size exoplanets circling other stars.

Photos and news from space to inspire, amaze, and even scare you a little.

The words may be similar, but astronomy (a science) and astrology (a divinatory practice) are very different things.

A recap of The Planetary Society's 2024 Day of Action in Washington, D.C.

China will attempt to return the first-ever samples from the far side of the Moon.

From Mars to Io, volcanoes top the list of hottest things in space right now — both literally and figuratively.

A look at the compositions of terrestrial planets, gas giants, and ice giants in our Solar System.

The worlds of our Solar System run the gamut of temperatures. Here are some of the hottest and coldest places we know of.

The latest news on missions to search for ice and water beneath planetary surfaces.

On a ranch in the Texas hill country, members of The Planetary Society gathered to marvel at the 2024 total solar eclipse as a community.

Space science costs money. Here's why it's worth the investment.

For hundreds of millions of people, the Sun and Moon put on an astonishing show this week. Here are our eclipse highlights and more.

From spotting comets to hearing eclipses and predicting solar emissions, there are many ways to experience space phenomena.

NASA and the European Space Agency (ESA) have a long-standing partnership that has resulted in spectacular science missions, including the James Webb Space Telescope and the Cassini-Huygens mission to Saturn.

New technologies, projects, and resources aim to help people with blindness and low vision experience the eclipse.

Planet X and Planet Nine are planets that have, at one time or another, been thought to exist in our Solar System. Both were theorized to explain orbital characteristics of smaller outer Solar System bodies.

Measuring changes in the Moon’s size, watching for eruptions on the Sun’s surface, and monitoring budget developments.

As the Sun nears solar maximum, the odds of potentially dangerous solar storms go up. What could one do to Earth?