Mars Archives

February 21, 2022February 21, 2022 by Matt Williams

NASA and HeroX are Crowdsourcing the Search for Life on Mars

This low-angle self-portrait of NASA's Curiosity Mars rover shows the vehicle at the site from which it reached down to drill into a rock target called "Buckskin." The MAHLI camera on Curiosity's robotic arm took multiple images on Aug. 5, 2015, that were stitched together into this selfie. Credits: NASA/JPL-Caltech/MSSS

For almost sixty years, robotic missions have been exploring the surface of Mars in search of potential evidence of life. More robotic missions will join in this search in the next fifteen years, the first sample return from Mars (courtesy of the Perseverance rover) will arrive here at Earth, and crewed missions will be sent there. Like their predecessors, these missions will rely on mass spectrometry to analyze samples of the Martian sands to look for potential signs of past life.

Given how much data we can expect from these missions, NASA is looking for new methods to analyze geological samples. To this end, NASA has partnered with the global crowdsourcing platform HeroX and the data-science company DrivenData to launch the Mars Spectrometry: Detect Evidence for Past Life challenge. With a prize purse of $30,000, this Challenge seeks innovative methods that rely on machine learning to automatically analyze Martian geological samples for potential signs of past life.

February 15, 2022February 15, 2022 by Matt Williams

Lasers Could Send Missions to Mars in Only 45 Days

Swarm of laser-sail spacecraft leaving the solar system. Credit: Adrian Mann

NASA and China plan to mount crewed missions to Mars in the next decade. While this represents a tremendous leap in terms of space exploration, it also presents significant logistical and technological challenges. For starters, missions can only launch for Mars every 26 months when our two planets are at the closest points in their orbit to each other (during an “Opposition“). Using current technology, it would take six to nine months to transit from Earth to Mars.

Even with nuclear-thermal or nuclear-electric propulsion (NTP/NEP), a one-way transit could take 100 days to reach Mars. However, a team of researchers from Montreal’s McGill University assessed the potential of a laser-thermal propulsion system. According to their study, a spacecraft that relies on a novel propulsion system – where lasers are used to heat hydrogen fuel – could reduce transit times to Mars to just 45 days!

February 11, 2022February 11, 2022 by Evan Gough

We Might Know Why Mars Lost its Magnetic Field

This figure shows a cross-section of the planet Mars revealing an inner, high density core buried deep within the interior. Dipole magnetic field lines are drawn in blue, showing the global scale magnetic field that one associates with dynamo generation in the core. Mars must have one day had such a field, but today it is not evident. Perhaps the energy source that powered the early dynamo has shut down. The differentiation of the planet interior - heavy elements like iron sinking towards the center of the planet - can provide energy as can the formation of a solid core from the liquid. Credit: NASA/JPL/GSFC

Mars is a parched planet ruled by global dust storms. It’s also a frigid world, where night-time winter temperatures fall to -140 C (-220 F) at the poles. But it wasn’t always a dry, barren, freezing, inhospitable wasteland. It used to be a warm, wet, almost inviting place, where liquid water flowed across the surface, filling up lakes, carving channels, and leaving sediment deltas.

But then it lost its magnetic field, and without the protection it provided, the Sun stripped away the planet’s atmosphere. Without its atmosphere, the water went next. Now Mars is the Mars we’ve always known: A place that only robotic rovers find hospitable.

How exactly did it lose its magnetic shield? Scientists have puzzled over that for a long time.

February 11, 2022February 11, 2022 by Alan Boyle

Elon Musk Takes the Long View in Glitzy Update on SpaceX’s Starship Super-Rocket

SpaceX's Starship and Super Heavy booster stand tall on the Starbase launch pad in Texas. Source: SpaceX via YouTube

SpaceX CEO Elon Musk delivered a long-awaited, live-streamed update on his plans for launching the world’s most powerful rocket, with the spotlighted backdrop of a freshly stacked Starship and Super Heavy booster standing on the launch pad at the company’s Starbase facility in South Texas.

The Starship project is key to Musk’s plans to send thousands of settlers to Mars and make humanity a multiplanet species. It’s also key to his plans to put thousands of satellites in Earth orbit for SpaceX’s Starlink broadband network, which is supposed to bring in the money needed for Mars missions.

And as if all that’s not enough, Musk expects Starship to revolutionize space travel and society in ways that can’t be foreseen. “When you have an utterly profound breakthrough, the use cases will be hard to imagine,” he told hundreds of attendees during the Feb. 10 presentation at the Boca Chica base.

Musk exhibited his trademark optimism about the launch system’s development schedule, saying that the Federal Aviation Administration could give its go-ahead for the first Starship orbital launch from Texas as soon as next month. But he said there was a Plan B in case that approval didn’t come soon.

February 3, 2022February 3, 2022 by Evan Gough

There are Places Where Salty Water Could Emerge Onto the Surface of Mars

A computer generated view of Mars, with an area including Gale Crater beginning to catch morning light. Image Credit: NASA/JPL-Caltech

The existence of water on Mars is a contentious subject. We know there used to be water on the surface of the planet, though it’s long gone now. We know there’s frozen water underground in the world, and we know there’s water vapour in the air. But life needs liquid water.

Could there be liquid water on Mars?

A new study shows how salty water could emerge from the atmosphere onto Mars’ surface under the right conditions.

February 2, 2022February 2, 2022 by Nancy Atkinson

Glowing Helicopters on Mars

This is an artist’s concept of a glow surrounding a drone at Mars during flight. The glow, exaggerated for visibility, might happen if the drone’s spinning rotor blades generate an electric field that causes electric currents to flow in the Martian air around the craft. Although the currents generated by the drone in the atmosphere are small, they might be large enough to cause the air around the blades and other parts of the craft to glow a blue-purple color. Credits: NASA/Jay Friedlander

If the Ingenuity helicopter would fly at night on Mars, its very possible the whirring rotors would create enough static electricity in the extremely dry Martian atmosphere to cause the air around the craft to glow.

“The faint glow would be most visible during evening hours when the background sky is darker,” said William Farrell, from Goddard Space Flight Center and lead author of a paper on this topic. “NASA’s experimental Ingenuity helicopter does not fly during this time, but future drones could be cleared for evening flight and look for this glow.”

January 29, 2022January 29, 2022 by Nancy Atkinson

Rings Inside a Martian Crater Reveal its Ancient History

An unusual crater on Mars, as seen by the CaSSIS camera onboard the ESA/Roscosmos ExoMars Trace Gas Orbiter (TGO) on 13 June 2021 in the vast northern plains of Acidalia Planitia. Credit: ,ESA/Roscosmos/CaSSIS,

Is this a closeup look at a tree stump, or an orbital view of an impact crater? At first glance, it might be hard to tell. But this image of a crater on Mars provides planetary scientists almost the same kind of climate history data about the Red Planet as tree rings provide to climate scientists here on Earth.

This picture was taken by the Colour and Stereo Surface Imaging (CaSSIS) camera onboard the ESA/Roscosmos ExoMars Trace Gas Orbiter (TGO), which arrived at Mars in 2016 and began its full science mission in 2018.

January 28, 2022January 28, 2022 by Evan Gough

Is the Underground Lake on Mars Just Volcanic Rock?

Ice at Mars' south pole. Image Credit: ESA/DLR/FU Berlin/Bill Dunford

Is Mars home to an underwater lake? Different researchers are reaching different conclusions. Some say remote sensing from the Mars Express orbiter shows liquid water in an underground lake at Mars’ south polar region. Other researchers say clays or minerals explain the data better.

Who’s right? Maybe none of them.

A new study says that volcanic rock can explain the Mars Express data and that it’s a more plausible explanation.

January 28, 2022January 28, 2022 by Evan Gough

The Scientific Debate Rages on: Is there Water Under Mars’ South Pole?

There’s no surface water on Mars now, but there was a long time ago. If you ask most people interested in Mars, what’s left of it is underground and probably frozen.

But some previous evidence shows there’s a lake of liquid water under the planet’s South Pole Layered Deposits (SPLD). Other evidence refutes it. So what’s going on?

Science, that’s what.

January 28, 2022January 28, 2022 by Andy Tomaswick

NASA is Already Designing Hardware for a Mars Sample Return Mission

Testing is key to the success of any space mission, and the more complex the mission, the more testing is required to complete it successfully. The Mars Sample Return (MSR) mission is one of the most ambitious missions ever undertaken. It started with the Perseverance rover, which is currently exploring Jezero crater while occasionally stopping to fill sample bottles with interesting material. But the more impressive engineering feat is what happens next. NASA plans to launch a combination lander, rover, and ascent rocket that will land on the Martian surface, pick up the sample containers Perseverance has left behind, sterilize them, launch them back into space, and then return them to Earth.