The Curiosity rover detects oxygen behaving strangely on Mars

14 Novembre, 2019, 14:09 | Auteur: Therese Cote
  • Jezero Delta

First, there was the business with the disappearing, reappearing methane.

When Mars was warmer than it is today, the lake inside of Jezero crater may have been habitable, hosting basic microbial life similar to bacteria. Because it landed in Gale Crater in 2012, the Curiosity rover has been finding out the Martian floor beneath its wheels to be taught extra concerning the planet's historical past.

The changes of oxygen concentrations in the Martian air baffled scientists as the gas Earth creatures use to breathe behaves in a way that can not be explained by any known chemical processes. Water may be the lifeblood of our planet, but it's unclear whether Mars ever supported (or still supports) life. The data show that the air inside Gale Crater is 95% carbon dioxide (CO2) by volume, 2.6% molecular nitrogen (N2), 1.9% argon (Ar), 0.16% molecular oxygen (O2) and 0.06% carbon monoxide (CO).

Over the course of the year, it is said that the atmospheric pressure in air changes. This occurs when the carbon dioxide fuel freezes in winter on the poles, inflicting the air strain to decrease.

When CO2 is re-released from the polar caps as spring and summer returns, it mixes with the other gases to raise the air pressure again.

Researchers came all over the amount of oxygen within the air rose all over spring and summer season by as grand as 30% then dropped aid to phases predicted yb known chemistry within the autumn. This freaky pattern kept repeating, showing that something unexplainable was producing oxygen and then removing it from the Martian atmosphere.

Scientists considered the possibility that Carbon dioxide or water molecules could have released oxygen when they broke apart in the atmosphere, leading to the short-lived rise. The process whereby solar radiation breaks apart oxygen and it dissipates into space is likewise too slow.

Pakistan anti-government protesters block highway in campaign to oust PM
Addressing participants of the Azadi March, Atta ur Rehman said that implementation on Plan B has already begun. Soomro said that one should not think that the Azadi March was nearing its end.

New Batman film finds its Alfred
The Warner Bros movie, which revisits the story of the DC superhero, found its new Batman in Robert Pattinson earlier this summer. Both Matt Reeves and Andy Serkis worked together on Dawn of the Planet of the Apes and War for the Planet of the Apes .

L'ancien président hospitalisé après des chutes — Jimmy Carter
Carter avait été hospitalisé le 22 octobre pour une fracture pelvienne mineure après être tombé chez lui à Plains, en Géorgie. " Le Président Carter se repose confortablement et son épouse Rosalynn est avec lui ", a-t-elle précisé.

Oxygen and methane shall be produced biologically from things adore microbes and abiotically from chemistry linked to water and rocks.

Now, Martian soil does contain a lot of oxygen. "It has to be some chemical source and sink that we can't yet account for". In June, his sample analysis instrument Mars has detected a surprising spike in methane gas that puzzled NASA scientists.

'The incontrovertible truth that the oxygen behaviour is no longer perfectly repeatable each and every season makes us deem that it be no longer a controversy that has to elevate out with atmospheric dynamics.

This puzzle is reminiscent of a similar mystery about methane levels in the crater: SAM previously found that the typically indiscernible levels of methane sometimes increase by about 60% in the summer and plummet at other random times, for unknown reasons.

We don't, as yet, have any evidence that there is life on Mars, but nor can it be ruled out as a cause. Instead, the gases are likely produced by chemical processes related to water and rock. "We have not been able to come up with one process yet that produces the amount of oxygen we need, but we think it has to be something in the surface soil that changes seasonally because there aren't enough available oxygen atoms in the atmosphere to create the behavior we see", said Timothy McConnochie, co-author of the paper and an assistant research scientist at the University of Maryland.

"Using a technique we developed that helps us find rare, hard-to-detect mineral phases in data taken from orbiting spacecraft, we found two outcrops of hydrated silica within Jezero crater", said the study's lead author, Jesse Tarnas, a PhD student at Brown University in Rhode Island, US.



North Korea warns of retaliation against U.S-S.Korea military drills
The talks have stalled over disagreements on disarmament steps and the removal of sanctions imposed on the North. Esper said the dispute between Tokyo and Seoul is only helping North Korea and China.

Disney's Alan Horn Says The Mandalorian Could Get His Own Movie
Disclaimer: this is not actually Master Yoda as a baby, but Yoda's species does not have a known name. Yoda lived to be 900 years old (and he spent more than 800 of those years training Jedi ).

Trent Reznor Just Won A CMA Award
Recently speaking to Rolling Stone , Reznor explained his reaction to being part of "Old Town Road". Even though the CMA win for "Old Town Road" was expected, it has not been without controversy.

Boeing stock soars: It still thinks 737 Max will fly next month
As far as the airlines are concerned, many of them have taken MAX out of their flying schedule until March next year. Boeing has said it is working around the clock on a fix for the problem.

Nemanja Matic edging towards leaving Manchester United for Serie A in January
Solskjaer says he was pleased by what he saw from Fred on Sunday afternoon as the Red Devils claimed a much-needed win in the Premier League.

L’ex-manager de Michael Schumacher s’en prend à sa femme Corinna
Je sais que Michael (Schumacher ) a été durement touché, mais malheureusement je ne connais pas les progrès qu'il a réalisés en rééducation.

Auburn drops a spot in 2nd College Football Playoff rankings
Both UGA and Alabama are one-loss teams, with the Bulldogs suffering a defeat to unranked SC . Tom Green is an Auburn beat reporter for Alabama Media Group.

Regulators to investigate Google's medical data collection practices
Google - no stranger to security scrutiny - promises that patient info can not be combined with Google user data or used for anything else...

Friends reunion special to stream on HBO Max?
That also means there's a chance the price gets so high they aren't willing to pay it, and this thing doesn't come together. The one-off unscripted special would see its stars and creators look back at the sitcom's classic moments.

Drug-Resistant Germ Threat Is Worsening, Puzzling: CDC
Prevention efforts have reduced deaths from antibiotic-resistant bugs by 18% overall and by almost 30% in hospitals, the U.S. Everyone can help prevent the spread of antibiotic resistance by taking antibiotics only as prescribed, Craig said.