NASA
rover finds organic molecules, methane gas on Mars
Send a link to a friend
[December 17, 2014]
By IRENE KLOTZ
Reuters - NASA’s Mars rover Curiosity has
found carbon-containing compounds in samples drilled out of an ancient
rock, the first definitive detection of organics on the surface of
Earth’s neighbor planet, scientists said on Tuesday.
|
The rover also found spurts of methane gas in the atmosphere, a
chemical that on Earth is strongly tied to life. Additional studies,
which may be beyond the rover’s capabilities, are needed to
determine if the organic compounds and/or the methane gas were
produced by past or present life on Mars or if they stem from
geochemical processes.
“We have had a major discovery. We have found organics on Mars,”
Curiosity lead scientist John Grotzinger, with the California
Institute of Technology in Pasadena, Calif., said during a webcast
press conference at a science meeting in San Francisco.
“The probability of any of these things being sources (from life)
... we just have to respect that it is a possibility,” he added.
Curiosity picked up hints of organics in its earliest chemical
analysis of rocks in Gale Crater, a 96-mile (154-km) wide impact
basin where the rover made a sky-crane landing in August 2012.
![](http://archives.lincolndailynews.com/2014/Dec/17/images/ads/current/LINCOLN_theater_011411.png) Last week, scientists published research showing the crater was once
filled with water, with sediments building up over time to form
three-mile (5-km) high Mount Sharp, which rises from the basin’s
floor.
Shortly after Curiosity landed, it found that the planet most like
Earth in the solar system had the right chemical ingredients and
environmental conditions to support microbial life, fulfilling the
primary goal of the mission.
The methane detections were a big surprise, said Curiosity
co-investigator Chris Webster, with NASA Jet Propulsion Laboratory
in Pasadena, Calif.
A year ago, scientists reported that after eight months of
searching, Curiosity had found no detectable methane in the
atmosphere around Gale Crater.
[to top of second column] |
![](http://archives.lincolndailynews.com/2014/Dec/17/images/ads/current/detailshop_lda011113.png)
The rover continued to take air samples and in November 2013 it hit
pay dirt with a methane spike 10 times higher than background
levels. The methane patch remained around the rover for the next 60
days and then vanished.
Curiosity scientist Sushil Atreya, with the University of Michigan,
Ann Arbor, told reporters his team suspects the methane was produced
somewhere around the rover and then dissipated in the wind.
The methane detections by Curiosity follow a series of observations
by Earth-based telescopes and Mars-orbiting spacecraft that found
mysterious but fleeting plumes of methane. “We’re really not in a
position from these data to say one way or the other what the origin
of the methane is,” Atreya said.
“Because we are seeing signals here it’s worth coming back and doing
more work,” Grotzinger added. The research was released at the
American Geophysical Union conference. The methane study will be
published in this week’s issue of the journal Science.
(Reporting by Irene Klotz in Cape Canaveral, Fla.; Editing by Steve
Orlofsky)
[© 2014 Thomson Reuters. All rights
reserved.] Copyright 2014 Reuters. All rights reserved. This material may not be published,
broadcast, rewritten or redistributed.
![](http://archives.lincolndailynews.com/2014/Dec/17/images/ads/current/iga_sda032409.png) |