Nasa’s Curiosity rover has detected another methane "spike" on Mars, in what could be a sign of alien life on the red planet.
According to the New York Times, which obtained an email about the discovery written by senior scientists at Nasa, the rover detected "startlingly high amounts of methane in the Martian air."
The detection of methane hints at an even greater discovery – life on Mars – as the gas is often generated by microbes underground known as methanogens,which can survive without oxygen.
"Given this surprising result, we’ve reorganized the weekend to run a follow-up experiment, " wrote scientist Ashwin R. Vasavada in the email published by the New York Times.
The most recent discovery of Methane is 21 parts per billion, three times higher than the "spike" in 2013.
While increased methane levels measured by @MarsCuriosity are exciting, as possible indicators for life, it’s important to remember this is an early science result. To maintain scientific integrity, the #science team will continue to analyze the data before confirming results. pic.twitter.com/zSrONQHuc5
— Thomas Zurbuchen (@Dr_ThomasZ) June 22, 2019
Scientists are also not ruling out the possibility that the methane was not recent, having been trapped underground for millions of years, and only now is gradually emerging through cracks in the surface.
Thomas Zurbuchen, from Nasa’s science mission directorate, advised people not to jump to any conclusions about the methane detection in a message on Twitter.
"While increased methane levels measured by Mars Curiosity are exciting, as possible indicators for life, it’s important to remember this is an early science result," he wrote.
"To maintain scientific integrity, the science team will continue to analyse the data before confirming results."
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