Dune Fields in Gale Crater Tell the Story of Mars’ Shifting Climate Over Eons

Rocks can tell us a lot about a planet.  On Earth, the study of geology has been around for hundreds of years and has resulted in such scientific findings as the theory of plate tectonics and the discovery of dinosaur fossils.  Geology on Mars has not had as long and storied a history, but with the rovers that have landed on the planet in the last few decades, Martian geology has started to bloom. Curiosity, one of those rovers, has done a particularly good job at documenting the rock formations in its neighborhood of Gale crater.  Now researchers led by a team at Imperial College London have published a paper using data from Curiosity that detail a set of ancient dunes on Mars that provide some insight into the planet’s former habitability.

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Mid-Latitude Glaciers on Mars Could Supply Water to Human Explorers

Artist's impression of a Mars habitat in conjunction with other surface elements on Mars. Credit: NASA

By Earth standards, the surface of Mars is the picture of desolation. It’s not only irradiated and cold enough to make Antarctica look balmy, but it’s also one-thousands times drier than the driest places on Earth. However, beneath the super-arid surface of the Red Planet, there are abundant supplies of water ice that could someday be accessible to human explorers (and even settlers).

This is especially the case in the mid-latitude region known as Arcadia Planitia, a smooth plain located in Martian northern lowlands. According to new research conducted with support from NASA’s Jet Propulsion Laboratory (JPL), the region shows signs of glaciers and glacier activity. These findings could prove very useful for the future human landings and exploration of Mars, not to mention potential settlement.

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Ingenuity Completes a Huge 50-Meter Flight on Mars

NASA’s Ingenuity Mars Helicopter can be seen hovering during its third flight on April 25, 2021, as seen by the left Navigation Camera aboard NASA’s Perseverance Mars rover. Credit: NASA/JPL-Caltech

On Feb. 18th, 2021, the Perseverance rover landed on Mars carrying the most advanced scientific instruments ever sent to another planet. It also carried experiments designed to push the envelope of exploration and help pave the way for crewed missions to Mars. This includes the Ingenuity Mars Helicopter, an experimental flight system designed to see if aerial systems can operate in the Martian atmosphere.

After making its inaugural flight on April 19th, Ingenuity has taken to the air twice more and set many records in the process. During its most recent test flight (which took place on the morning of April 25th), the helicopter flew farther and faster than ever before. All told, the helicopter covered a distance of 50 meters (164 feet) in 80 seconds, reaching a top speed of 2 m/s (6.6 feet per second) or 7.2 km/hour (4.5 mph).

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Mars has the Right Conditions for Life Just Under the Surface

According to the immortal words of Ian Malcom (Jeff Goldblum) “Life..uh…finds a way”.  Back in 2005, an article in Nature used the famous quote from Jurassic Park to describe the possibility of life surviving on Mars.  It encapsulates the hope that life’s adaptability, which it has proved itself so many times over on Earth, could hold true on other planets as well.  Now a new paper in Astrobiology shows that there might very well be a place where life can sustain itself on the red planet – right underneath the surface.

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Perseverance Successfully Extracts Oxygen From the Martian Atmosphere. About 10 Minutes of Breathing Time for an Astronaut

Mars
The MOXIE unit being placed into the Perseverance rover. Courtesy NASA/JPL.

Humanity achieved an incredible series of new milestones on Mars this week. It began on Monday April 19th, when the Ingenuity helicopter demonstrated the first-ever powered, controlled flight on another world. And now, for the first time, the Perseverance rover has used ingredients from the Martian atmosphere to create breathable oxygen, in a test that might pave the way for future astronauts to ‘live off the land’ on the Red Planet.

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This Is a Collapsed Pit on Mars, Not a Pimple

A HiRISE image of the southern polar region of Mars shows a sunken pit on the layered surface. Credit: NASA/JPL/University of Arizona

Mars has been in the news a lot lately, and for good reason. With the historic landing of the Perseverance Rover earlier in the year, and the successful flight of Ingenuity, the first-ever aircraft to fly in another atmosphere, earlier this morning (April 19, 2021), there’s no shortage of exciting stories of technical brilliance from the human-built wonders exploring the red planet. High above the plucky helicopter, the Mars Reconnaissance Orbiter (MRO) surveys the Martian landscape on a grand scale. A brain-bending image released by High Resolution Imaging Science Experiment (HiRISE), a powerful camera aboard MRO, shows a sunken pit in the planet’s polar region. From the high-altitude perspective of the orbiter, it’s easy for the mind to warp the concave depression into a convex, acne-esque Martian polar zit!

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“You Wouldn’t Believe What I Just Saw:” Ingenuity Helicopter Flies Successfully on Mars

NASA’s Ingenuity Mars Helicopter captured this shot as it hovered over the Martian surface on April 19, 2021, during the first instance of powered, controlled flight on another planet. It used its navigation camera, which autonomously tracks the ground during flight. Credits: NASA/JPL-Caltech

NASA pulled off a Wright Brothers moment on Mars early today by successfully flying the tiny Ingenuity helicopter for approximately 40 seconds.

“We can now say that human beings have flown a rotorcraft on another planet,” said MiMi Aung, Ingenuity’s lead engineer, speaking to her colleagues gathered at the Jet Propulsion Laboratory (JPL) in California to execute and monitor the flight.

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The Same Technology Could Search for Microbes in Mars Rocks or Under the ice on Europa

Credit: NASA/JPL-Caltech

Ever since it landed in the Jezero Crater on Feb. 18th, 2021, the Perseverance rover has been prepping its scientific instruments to begin searching for signs of past life on the Red Planet. These include spectrometers that will scan Martian rocks for organics and minerals that form in the presence of water and a caching system that will store samples of Martian soil and rock for retrieval by a future mission.

These telltale indicators could be signs of past life, which would most likely take the form of fossilized microbes. In the near future, a similar instrument could be used to search for present-day extraterrestrial life. It’s known as the Wireline Analysis Tool for the Subsurface Observation of Northern ice sheets (WATSON), and could be used to find evidence of life inside “ocean worlds” like Europa, Enceladus, and Titan.

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How’s the Weather in Jezero Crater? According to Perseverance: Cold

Credit: NASA/JPL-Caltech

On February 18th, 2021, the Perseverance rover landed in the Jezero crater on Mars. Shortly thereafter, it powered up some of the scientific instruments it will use to conduct science operations and search for potential evidence of past life. One such instrument is the Mars Environmental Dynamics Analyzer (MEDA), which turned on for 30 minutes and issued the rover’s first weather report from Mars.

The forecast? Bitter Cold! Basically, the temperature was lower than what you’d expect on a harsh and windy winter’s night here on Earth! According to the data the rover sent back, which was received by mission controllers at 05:25 P.M. EST (08:25 P.M. PST), the local temperature around the Octavia E. Bulter landing in the Jezero crater was -20 °C (- 4 °F) when MEDA started recording, then dropped to -25.6 °C (-14 °F) within 30 minutes.

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Perseverance Takes a Selfie With Ingenuity. It’s Almost Time to fly

NASA’s Perseverance Mars rover took a selfie with the Ingenuity helicopter, seen here about 13 feet (3.9 meters) from the rover. This image was taken by the WASTON camera on the rover’s robotic arm on April 6, 2021, the 46th Martian day, or sol, of the mission. Credits: NASA/JPL-Caltech/MSSS.

Perseverance is having a proud parent moment in this image, looking like it’s waiting with a child at the bus stop on the first day of school.

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