News / Science & Technology

Next Mars Rover Could Look for Signs of Past Life

Artist's Concept of Mars 2020 Rover (NASA/JPL-Caltech )
Artist's Concept of Mars 2020 Rover (NASA/JPL-Caltech )
Suzanne Presto
The U.S. space agency, NASA, is planning to send another rover to Mars in 2020.  
A NASA-appointed team of 19 scientists and engineers says the next Mars rover should seek out signs of past life on the Red Planet and collect samples for possible future return to Earth.

One member of the Mars 2020 Science Definition Team, Lindy Elkins-Tanton of the Carnegie Institution in Washington, studies the evolution of planets.  She told reporters during a NASA teleconference that questions are what drive scientific discoveries.   

"And one of the very biggest questions for all of humankind is, 'are we alone?' and that is the question we're hoping to make really big advances with with this Mars 2020 mission," she said.

Scientists already scored a major victory when NASA's Curiosity rover, which landed on the Red Planet last August, provided evidence that ancient Mars had an environment that could have supported living microbes.  

The team says the next step is to actually seek out biosignatures, preserved features in ancient rocks and soil that could have formed biologically.         

Jack Mustard is the chair of the Science Definition Team and a professor of geological sciences at Brown University in Rhode Island.  He says team members did discuss whether to look for existing life on Mars.

"But the feeling was, on the basis of the scientific evidence we have today, that the most logical steps forward were to look for the ancient signs of life that would be preserved within the rock record," he explained, adding that evidence suggests that habitable environments on Mars were common in the ancient past.

The next rover will look similar to the car-sized, six-wheeled Curiosity rover, in part because using an existing design will reduce costs.  The 2020 rover would be able to drill into and sample Martian rock, just as Curiosity does now.  But the team says a major objective for the next rover is to package as many as 31 samples that could be returned to Earth during a later mission.

John Grunsfeld, a former astronaut and NASA's associate administrator for science in Washington, noted that while the 2020 rover mission concept allows for the selection, gathering and caching of samples, it does not include their eventual return.

"I wouldn't rule out that perhaps human explorers will go and retrieve the cache, you know, in 20-plus years from now, as explorers set foot on Mars," he said.  "That's an eventual goal: to put astrobiologists and planetary scientists on the surface of Mars."

The team also says the 2020 rover should help advance NASA's plans for human exploration of the Red Planet in the 2030s.  The 2020 mission could help scientists understand any hazards posed by Martian dust or demonstrate ways to collect carbon dioxide that could be used as a resource for making oxygen or rocket fuel.

The Mars 2020 Science Definition Team is made up of experts from universities, research institutions and NASA.  They spent much of 2013 preparing guidelines for the Mars 2020 mission and released a 154-page report on Tuesday.

You May Like

China’s Influence Grows With New Infrastructure Bank

Multibillion-dollar China-backed and BRICS-supported Asian Infrastructure Investment Bank seen as possible challenger to such lenders as IMF, World Bank More

Video Rabbi Hits Road to Heal Jewish-Muslim Relations in France

Rabbi Michel Serfaty makes the rounds in his friendship bus to encourage dialogue and break down barriers between the two groups More

Post-deal Iran Leaders Need 'Economic Momentum' to Solidify

Economists say deal could inject more than $100 billion into coffers - not enough to entirely rescue ailing economy - but maybe adequate to create 'economic momentum' More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
US Gay Marriage Ruling Yields Real-life Impacti
X
Michael Bowman
June 28, 2015 10:05 PM
Friday’s landmark Supreme Court decision legalizing same-sex marriage throughout the United States is an outcome few thought possible just years ago, and shows a nation that increasingly tolerates and even celebrates the hopes and aspirations of gay people. VOA’s Michael Bowman spoke to a same-sex couple that will benefit from the high court ruling, and to a Christian scholar who is apprehensive about its potential consequences for America’s faith community.
Video

Video US Gay Marriage Ruling Yields Real-life Impact

Friday’s landmark Supreme Court decision legalizing same-sex marriage throughout the United States is an outcome few thought possible just years ago, and shows a nation that increasingly tolerates and even celebrates the hopes and aspirations of gay people. VOA’s Michael Bowman spoke to a same-sex couple that will benefit from the high court ruling, and to a Christian scholar who is apprehensive about its potential consequences for America’s faith community.
Video

Video Syrians Flee IS Advance in Hasaka

The Syrian government said Monday it has taken back one of several districts in Hasaka overrun by Islamic State militants. But continued fighting elsewhere in the northern city has forced thousands of civilians from their homes. In this report narrated by Bill Rodgers, VOA Kurdish Service reporter Zana Omer describes the scene in Amouda, where some of the displaced are taking refuge.
Video

Video Rabbi Hits Road to Heal Jewish-Muslim Relations in France

France is on high alert after last week's terrorist attack near the city Lyon, just six months after deadly Paris shootings. The attack have added new tensions to relations between French Jews and Muslims. France’s Jewish and Muslim communities also share a common heritage, though, and as far as one French rabbi is concerned, they are destined to be friends. From the Paris suburb of La Courneuve, Lisa Bryant reports about Rabbi Michel Serfaty and his friendship bus.
Video

Video S. Korea Christians Protest Gay Rights Festival

The U.S. Supreme Court decision mandating marriage equality nationwide has energized gay rights supporters around the world. Gay rights remain a highly contentious issue in a key U.S. ally, South Korea, where police did a deft job Sunday of preventing potential clashes between Christian protesters and gay activists. Kurt Achin reports from Seoul.
Video

Video Saudi Leaks Expose ‘Checkbook Diplomacy’ In Battle With Iran

Saudi Arabia’s willingness to wield its oil money on the global diplomatic stage appears to have been laid bare, after the website WikiLeaks published tens of thousands of leaked cables from Riyadh’s Ministry of Foreign Affairs. VOA's Henry Ridgwell reports.
Video

Video Nubians in Kenya Face Land Challenges

East Africa's ethnic Nubians have a rich cultural history that dates back thousands of years, but in Kenya they are facing hardships, including the loss of lands they have lived on for generations. They say the government has reneged on its pledge to award them title deeds for the plots. VOA's Lenny Ruvaga reports.
Video

Video Syrian Refugees Return to Tal Abyad

Syrian refugees in Turkey confirm they left their hometown of Tal Abyad because of intense fighting and coalition airstrikes, not because Kurdish fighters were engaged in ethnic cleansing, as some Turkish officials charged. VOA Kurdish Service reporter Zana Omer, in Tal Abyad, finds that civilians coming back to the town agree, as we hear in this report narrated by Roger Wilkison.
Video

Video Military Experts Question New Russian Tank Capabilities

Russia has been showing off its new tank design – the Armata T-14. Designers claim it is 20 years ahead of current Western designs - and driving it feels like playing a computer game. But military analysts question those assertions, and warn the cost could be too heavy a burden for Russia’s struggling economy. Henry Ridgwell reports.
Video

Video In Kenya, Police Said to Shoot First, Ask Questions Later

An organization that documents torture and extrajudicial killings says Kenyan police were responsible for 1,252 shooting deaths in five cities, including Nairobi, between 2009 and 2014, representing 67 percent of all gun deaths in the areas reviewed. Gabe Joselow has more from Nairobi.
Video

Video In Syrian Crisis, Social Media Offer Small Comforts

Za’atari, a makeshift city in Jordan, may be the only Syrian refugee camp to tweet its activities, in an effort to keep donors motivated as the war in Syria intensifies and the humanitarian crisis deepens. Inside the camp, families say mobile phone applications help hold together families that are physically torn apart. VOA’s Heather Murdock reports.
Video

Video Chemical-Sniffing Technology Fights Australia's Graffiti Vandals

Cities and towns all over the world spend huge amounts of resources battling graffiti writers who deface buildings, public transport vehicles and even monuments. Authorities in Sydney, Australia, hope a new chemical-sniffing technology finally will stop vandals from scribbling on walls in the passenger areas of commuter trains. VOA’s George Putic has more.
Video

Video Cambodia Struggling to Curb Child Labor

Earlier this year a United Nations report found 10 percent of Cambodian children aged 7-14 are working – one of the highest rates in the region – and said one in four children in that age bracket are forced to quit school to help their families. Although the child labor rate has dropped over the past decade, Cambodia has a lot more to do – including keeping more children in school. Robert Carmichael reports for VOA from Phnom Penh.

VOA Blogs