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Snapshots from Space

by Emily Lakdawalla

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Emily Lakdawalla

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Follow the thrilling adventures of planetary missions, past and present, and see the stunningly beautiful photos that they return from space!

A moon with atmosphere

Emily Lakdawalla • April 08, 2015 • 10

What is the solar system moon with the densest atmosphere? Most space fans know that the answer is Titan. A few of you might know that Triton's is the next densest. But what's the third? Fourth? Do any other moons even have atmospheres? In fact, they do; and one such atmosphere has just been discovered.

An internal ocean on Ganymede: Hooray for consistency with previous results!

Emily Lakdawalla • March 12, 2015 • 8

A newly published paper confirms a subsurface ocean at Ganymede. An ocean there was already suspected from its magnetic field and predicted by geophysics; new Hubble data confirms it, and even says it is in the same place we thought it was before. Such consistency is rare enough in planetary science to be worth celebration.

MER
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Emily Lakdwalla
The Planetary Fund

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