UA professor: 'Are we all Martians?'
UA scientist says move may have involved bacteria, microbes
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IF YOU GO
What: "Are We All Martians? The Meteoritic Exchange of Life Between Planets" lecture by H. Jay Melosh, UA Regents' professor of planetary sciences
When: 4 p.m. Wednesday
Where: Room 201, UA Physics and Atmospheric Sciences building, 1118. E. Fourth St.
Cost: Free, public
Parking: Pay parking is available in the Sixth Street Parking Garage, 1201 E. Sixth St.
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Basic life forms that originated on other planets could have migrated to Earth aboard meteorites, a University of Arizona researcher said.
"I'm talking about microbes, bacteria," said H. Jay Melosh, UA Regents' professor of space sciences at the Lunar and Planetary Lab. "I'm not talking about lizards or bunny rabbits.
"It's not outrageous that life developed on Mars and came to Earth. It seems conditions on the surface of Mars were such that life could survive or originate earlier than we have evidence of a crust on Earth."
Melosh will give a free public presentation at 4 p.m. Wednesday titled "Are We All Martians? The Meteoritic Exchange of Life Between Planets."
"A lot of the concern about the origin of life looks at how life could have gotten started," he said. "Maybe life came from somewhere else."
He said that 1 ton of Martian material - much of it tiny - falls on Earth each year. Most of the material remains undiscovered as it appears similar to material generic to Earth, he said.
The exchange works both ways, but he said it is easier for Martian meteorites potentially carrying microbes and bacteria to reach Earth than vice versa.
"Rocks from Mars are arriving all the time," he said.
While scientists lack proof that Martian life forms have arrived on Earth, such an exchange is not only possible, but inevitable, he said.
"We have a general idea that life may have started on Mars," he said. "We need to find living microbes or fossil microbes."
This may be simpler on Mars. If analysis of life forms found on Mars show the same genetic code as terrestrial life, we would have to conclude we have a common past, he said.
"If we should find Martian life using the same dictionary for basic life processes we would have to assume we are related," he said.
This does explain a lot about our legislature.
Why are Martian's always the scapegoats.
What's more, now we have to worry about illegal interplanetary immigration. The Martian community should do its best to develop their own economic system so they can stay on their own planet. We don't have enough resources here on Earth.
Evertime time a Martian lands at the Copper Queen Hospital, it costs taxpayers $40,000.00 in intergalactic space lira. That's roughly $2,567.38 in American dollars. The cost is mostly due to a special instrument required to open the Martian anal cavity, which oddly enough, is directly behind the Martian's left ear, which is unfortunately behind the Martian's right knee.
Where's Joe Sweeney when you need him.