NASA reveals ‘clearest sign of life’ on Mars yet
The evidence came in the form of a rock sample collected on the planet
What happened
NASA announced Wednesday that a rock sample collected on Mars by its Perseverance rover last year contains what appear to be biosignatures, or signs of previous life, on the Red Planet. “This very well could be the clearest sign of life that we’ve ever found on Mars,” acting NASA Administrator Sean Duffy said at a press conference coinciding with the publication of a paper on the findings in the journal Nature.
Who said what
NASA scientists were “giddy” when Perseverance found the rock with telltale signs of microbial life in a former lakebed called the Jezero Crater, The New York Times said. After a year studying the sample from 140 million miles away, “we are at the point where we are actually saying in detail, ‘Here is what we have found,’” study lead author Joel Hurowitz told the Times. And the chances are “better than a coin flip” that the sample contained convincing evidence of life.
The rock, dubbed Cheyava Falls, is “composed of finely packed sediment and covered in specks resembling poppy seeds and leopard spots,” said The Washington Post. Those specks, the study found, are “minerals that — on Earth — have traditionally been created from microbial activity.” That’s the “closest we’ve actually come to discovering ancient life on Mars,” NASA science mission chief Nicky Fox told reporters, but it “certainly is not the final answer.”
The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.
Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
What happened?
The “underlying elephant in the room” is that for the NASA scientists to confirm their theories, the rock samples “need to be returned to Earth,” said Space.com, and “NASA’s Mars Sample Return program remains in limbo due to budget constraints” and “priority shifts” in the Trump administration.
-
Courgette and leek ijeh (Arabic frittata) recipeThe Week Recommends Soft leeks, tender courgette, and fragrant spices make a crisp frittata
-
Trump’s power grab: the start of a new world order?Talking Point Following the capture of Nicolás Maduro, the US president has shown that arguably power, not ‘international law’, is the ultimate guarantor of security
-
Unrest in Iran: how the latest protests spread like wildfireIn the Spotlight Deep-rooted discontent at the country’s ‘entire regime’ and economic concerns have sparked widespread protest far beyond Tehran
-
NASA discovered ‘resilient’ microbes in its cleanroomsUnder the radar The bacteria could contaminate space
-
Artemis II: back to the MoonThe Explainer Four astronauts will soon be blasting off into deep space – the first to do so in half a century
-
The mysterious origin of a lemon-shaped exoplanetUnder the radar It may be made from a former star
-
Blue Origin launches Mars probes in NASA debutSpeed Read The New Glenn rocket is carrying small twin spacecraft toward Mars as part of NASA’s Escapade mission
-
‘The Big Crunch’: why science is divided over the future of the universeThe Explainer New study upends the prevailing theory about dark matter and says it is weakening
-
Dinosaurs were thriving before asteroid, study findsSpeed Read The dinosaurs would not have gone extinct if not for the asteroid
-
The moon is rustingUnder the radar The Earth is likely to blame
-
Panspermia: the theory that life was sent to Earth by aliensUnder The Radar New findings have resurfaced an old, controversial idea
