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Space Topics

Learn about the planets, moons, and smaller stuff in the solar system; the spacecraft that explore them; and how you can explore along with them.

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What We Do

The Planetary Society creates ways for the public to have active roles in space exploration. We seed innovative space technologies, nurture creative young minds, and are a vital advocate for our future in space.

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The Planetary Report

The Planetary Report is the internationally recognized flagship magazine of The Planetary Society, featuring lively articles and full-color photos to provide comprehensive coverage of discoveries on Earth and other planets.

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Science of Mars and its exploration by orbiters and rovers Curiosity and Opportunity

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Asteroids and Comets

Asteroids in the main belt or near Earth; comets in the Kuiper belt or visiting the Sun; near-Earth objects and the impact hazard they represent

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Space Missions

News and facts about the space missions that explore our solar system.

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Space Imaging

Most deep-space missions carry cameras to acquire scientific data; but these data can also be used to produce stunning views of distant worlds. And almost all of this data is free and readily available to the public for download.

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Extrasolar Planets

Extrasolar planets being discovered by Kepler and the world's great telescopes

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Outer Planets

Outer Planets Jupiter, Saturn, Uranus, and Neptune have retinues of moons and rings that make them like mini-solar systems.

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Life in the Universe

Could humans be the only intelligent beings in all the vastness of the universe? Or are we just one humble race, a member of a vast intergalactic fraternity of advanced civilizations? Is there other life in the solar system, or are we alone?

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Mars Exploration Rovers Update

Follow the unprecedented journey of the twin Mars Exploration Rovers Spirit and Opportunity with our detailed mission updates.

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Planetary Defense

An asteroid or comet headed for Earth is the only large-scale natural disaster we can prevent. Working together to fund our Shoemaker NEO Grants for astronomers, we can help save the world.



Beyond The Horizon, There's More To Explore!

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Space in Images

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