Why is the planet Venus so dry? Learn why the planet's water keeps escaping.
An ion might be to blame for an almost dry and devoid-of-water Venus. The planet, the second from the sun, is the hottest in the solar system. Its thick atmosphere holds in so much heat, and the surface is blazing enough to melt lead.
"Water is really important for life," said Eryn Cangi, co-author and a research scientist at the Laboratory for Atmospheric and Space Physics, in a. "We need to understand the conditions that support liquid water in the universe, and that may have produced the very dry state of Venus today."At one point, Venus might have hosted seas like Earth.
The ion is produced in the atmosphere on Venus but doesn't stay there long. Electrons found in the atmosphere recombine HCO+ ions to split them in two. When this happens, hydrogen ions escape into space, leaving Venus without the hydrogen, one of the two compounds needed for water. The phenomenon is called "dissociative recombination" and might cause Venus to lose twice as much water daily.
"One of the surprising conclusions of this work is that HCO+ should actually be among the most abundant ions in the Venus atmosphere," said Michael Chaffin, study co-author and a researcher at Laboratory for Atmospheric and Space Physics, in a statement.Other missions to Venus are set to probe the atmosphere for signs if it was ever habitable.
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