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Venus could be a better bet for ET than Mars scientists



Could there be life in the sky of Venus?

Despite an average temperature of 460 ° C, a new paper by researchers in the US claims that there could be microbial life in the clouds that cover the entire planet.

Venus has had plenty of time to develop life on her own, "said Sanjay Limaye of the University of Wisconsin-Madison, who led the study.

He says it's possible that Venus was once habitable and maybe so long liquid water had more than 2 billion years.

"This is much longer than it is believed to have happened on Mars."

Bacteria on Earth have been found to be alive for up to 41

km. * Other living organisms have proven successful under extreme circumstances, including acid lakes and hot springs.

NASA probes to Venus have found that the temperatures in the clouds can be much lower than at the surface, and mysterious dark patches in the clouds absorb the light similar to bacteria, previous studies have found.

"Venus shows some episodic dark, sulfur-rich spots, with contrasts of up to 30-40 percent in Ultrav iolettes and longer attenuated wavelengths, "says Dr. Limaye.

"These patches persist for days, continually changing their shape and contrasts and appear to be scale dependent."

The particles in the dark patches are the same size as bacteria on Earth, but the probes of NASA in the 1960s and 1970s could not distinguish between organic and non-organic.

"To really know, we have to go there and try the clouds," says co-author Rakesh Mogul, professor of biological chemistry at California State Polytechnic University

"Venus could be an exciting new chapter in astrobiology. "

The work has been published in the journal Astrobiology

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