Originally published February 22 2005
Two scientists say that life may exist on Mars right now
by Mike Adams, the Health Ranger, NaturalNews Editor
A pair of NASA scientists analyzing the variable methane signatures on Mars have come to the conclusion that microbial life exists on Mars. By analyzing the Rio Tinto River in Spain, whose highly acidic water dissolves iron and gives the river a reddish hue, scientists have posited the existence of microbial life in water trapped in caves on Mars.
A pair of NASA scientists told a group of space officials at a private meeting here Sunday that they have found strong evidence that life may exist today on Mars, hidden away in caves and sustained by pockets of water.
The scientists, Carol Stoker and Larry Lemke of NASA's Ames Research Center in Silicon Valley, told the group that they have submitted their findings to the journal Nature for publication in May, and their paper currently is being peer reviewed.
What Stoker and Lemke have found, according to several attendees of the private meeting, is not direct proof of life on Mars, but methane signatures and other signs of possible biological activity remarkably similar to those recently discovered in caves here on Earth.
Stoker and other researchers have long theorized that the Martian subsurface could harbor biological organisms that have developed unusual strategies for existing in extreme environments.
That suspicion led Stoker and a team of U.S. and Spanish researchers in 2003 to southwestern Spain to search for subsurface life near the Rio Tinto river---so-called because of its reddish tint---the product of iron being dissolved in its highly acidic water.
Stoker told SPACE.com in 2003, weeks before leading the expedition to southwestern Spain, that by studying the very acidic Rio Tinto, she and other scientists hoped to characterize the potential for a "chemical bioreactor" in the subsurface -- an underground microbial ecosystem of sorts that might well control the chemistry of the surface environment.
Making such a discovery at Rio Tinto, Stoker said in 2003, would mean uncovering a new, previously uncharacterized metabolic strategy for living in the subsurface.
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