Life on Mars? Scientists hope to find it by decoding Martian DNA - íWe Can Rebuild Themí
2012-10-22 0:00

By Karen Kaplan | Phys.org





Apparently, there just arenít enough genomes for Craig Venter to sequence here on Earth, so heís making plans to send a DNA sequencer to Mars.


"There will be life forms there," Venter said, with his usual confidence, at a Wired Health conference this week in New York.


If he can build a machine to find it, the next steps would be to decode its DNA, beam it back to Earth, put those into a cell and then boot up a form in a biosecure lab.


It may sound far-fetched, but assuming that there is DNA to be found on the Red Planet - a big assumption, to be sure - the notion of equipping a future Mars rover to sequence the DNA isnít so crazy.


Venter has already sent his yacht around the globe to scoop up seawater and sequence whatever DNA it found in . He has also been working on technology to create small genomes from scratch and insert them into living cells to bring these organisms to life. The difference now is that all of this technology would be applied to Mars.


Itís highly unlikely that any DNA-based life forms could survive on the , so Venterís "biological teleporter" (as he dubbed it) would dig under the surface for samples to sequence. If they find anything, "it would take only 4.3 minutes to get the Martians back to Earth," he said. "Now we can rebuild the Martians in a P4 lab."


Venter isnít the only one looking for Martian DNA. According to a report in the MIT Technology Review, so is Jonathan Rothberg, founder of the company Ion Torrent.


Rothberg is working with NASA-funded scientists from the Massachusetts Institute of Technology and Harvard to adapt his companyís Personal Machine for use on Mars, the report says. Itís part of a NASA astrobiology project known as the Search for Extra-Terrestrial Genomes, or SETG.


MIT research scientist Christopher Carr is part of a group thatís "building a miniature RNA/ to search for life beyond Earth," according to his website. "Top places to look include Mars, Enceladus (a moon of Saturn), and Europa (a moon of Jupiter)."


Carr told Tech Review that one of the biggest challenges is shrinking Ion Torrentís 30-kilogram machine down to a mere 3 kg - light enough to fit on a Mars rover.


Thatís just one of the hurdles. NASA has no firm plans for a rover to succeed Curiosity, the lab-on-wheels that reached the Red Planet in August. Even if a new rover gets the green light, thereís no guarantee that a gene sequencer would get one of the coveted spots for research instruments.


Article from: phys.org





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