This illustration shows NASA’s Cassini spacecraft above Saturn's northern hemisphere prior to one of its 22 grand finale dives.Ramanarayanan Krishnamurthy speaking to an audience at the Stated Clearly Animation Screening: San Diego Festival of Science & Engineering.Announcing the Fifth Baruch S. Blumberg/Library of Congress Chair in Astrobiology. Lucianne WalkowiczExoplanet Biosignatures Workshop Without Walls Report Now Available. The workshop brought together astrobiology, exoplanet, and mission concept communities to review, discuss, debate, and advance the science of biosignatures.
Cassini’s Grand FinaleOn September 15, 2017, the Cassini spacecraft’s time at Saturn came to an end.01/04
Cleaning Up the ClutterHow proto-biology arose from the prebiotic clutter.02/04
Announcing the Fifth Baruch S. Blumberg/Library of Congress Chair in AstrobiologyLucianne Walkowicz03/04
Exoplanet Biosignatures Workshop Without Walls Report Now AvailableThe workshop brought together astrobiology, exoplanet, and mission concept communities to review, discuss, debate, and advance the science of biosignatures.04/04
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Mars rover taking a picture of itself.
NASA MISSIONSExploring the Red Planet

The rovers and spacecraft we’ve sent to Mars have found evidence the planet was warmer in the past, with lakes and rivers. Was there life there? Future exploration may find evidence for that as well.

The facts and figures —37%

The gravity on Mars is only 37 percent of Earth’s gravity. Not only could you leap three times higher on Mars, but this lower gravity is one reason why Olympus Mons became the biggest volcano in the solar system.

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