We thought Mars had liquid water on its surface, now we don’t. Getting it wrong is an essential part of doing science right.
Earth’s Oceans Have Always Been Local
Most of the worlds of the inner solar system are fairly dry. So how did Earth come to have large oceans on its surface?
The Edge of Wetness
The history of our search for water on Mars is a bit convoluted, and like many discoveries in science it has happened in small steps rather than a revolutionary discovery.
Shores of Cosmic Oceans
Observations of a white dwarf finds evidence of a Ceres-sized asteroid comprised of one third water.
A Matter of Degree
By observing Ganymede’s aurora, we now know Jupiter’s moon has an sub-surface ocean larger than any on Earth.
Water, Water, Every Where
New evidence from Cassini points to the existence of warm water on Saturn’s icy moon Enceladus.
Blue Mars
A new study of the water isotopes on Mars show that Mars was an ocean world 4 billion years ago.
A Comet’s Tale
Results are starting to come in from the Rosetta mission, including a new article in Science on the composition of water on the comet 67P/C-G. The results support the idea that Earth’s water didn’t come from cometary bombardments.
Ancient Seas
Earth’s water is more ancient than you might suspect.
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