European Mars orbiter spies crumbling crater 'soaked in layers of Martian history' (photo)

When you buy through links on our articles, Future and its syndication partners may earn a commission.
A European Mars probe captured a stunning view of a Martian crater that's rich in many of the features that help scientists reconstruct the planet's dynamic history over billions of years.
The image, taken in October 2024 using the High Resolution Stereo Camera (HRSC) on the European Space Agency's (ESA) Mars Express orbiter, shows a crumbling crater called Deuteronilus Cavus. It is "soaked in layers of Martian history," having been exposed to volcanic lava flows, erosion from liquid water, repeated freeze-thaw cycles that expanded its edges, and layers of wind-blown volcanic dust settling over time, according to a statement from the space agency.
Located in a transitional zone between the planet's rugged southern highlands and smoother northern lowlands, Deuteronilus Cavus is believed to originally have formed following an impact roughly 4.1 to 3.7 billion years ago, when Mars and other planets were being bombarded by huge numbers of asteroids and comets. Over time, the nearly circular 75-mile-wide (120 kilometers) depression has been eroded by water and ice, enlarging it to nearly twice its initial size.
ESA shared a fun "recipe" outlining the series of events that shaped the crater, offering valuable insights into the planet's climatic and geological evolution. For example, the presence of clay minerals indicates past interactions between volcanic materials and water, hinting at the possibility of ancient habitable environments, according to the statement.
This is further supported by channels cut through the crater's rim, likely formed by surface water flow or the collapse of weakened ground above draining subsurface water. Meanwhile, grooves in the crater rim suggest that ice once formed when Mars' axis tilted more sharply away from the sun than it does now.
Related Stories:
— Mars: Everything you need to know about the Red Planet
— Facts about ESA's Mars Express orbiter
— What happened to all the water on Mars? Here's why the debate continues
"The linear grooves indicate where boulders frozen into the base of a glacier were dragged along, gouging out the troughs visible today," ESA officials said in the statement. "Around the base of the crater's inner walls, we can see the smooth, tongue-shaped ends of rock-covered glaciers. These 'debris aprons' formed when ice mixed together with rocky debris along the crater walls during a period of glaciation, and slowly crept downslope."
The crater's interior also exhibits a mix of rock knobs, mesas, channels and plains, believed to be remnants of a collapsed central peak. Dark volcanic ash covers much of the crater floor, while surrounding wrinkle ridges mark ancient lava flows.
"This feature-rich crater has all the ingredients for exploring Mars' varied geological processes, giving us a tantalizing taste of its complex history," ESA officials said in the statement.

Try Our AI Features

Explore what Daily8 AI can do for you:

Learn with AIFact CheckingText to SpeechAI Summary

Related Articles

Boston Globe

5 hours ago

• Boston Globe

It turns out weather on other planets is a lot like on Earth

Related : Advertisement But by leveraging the sheer amount of knowledge and data about our planet, scientists can get a head start on understanding the inner workings of storms or vortexes on other planetary bodies. In some cases, the models provide almost everything we know about some otherworldly atmospheric processes. 'Our planetary atmosphere models are derived almost exclusively from these Earth models,' said Scot Rafkin, a planetary meteorologist at the Southwest Research Institute. 'Studying the weather on other planets helps us with Earth and vice versa.' Satellite photo of the Baltic Sea surrounding Gotland, Sweden, with algae bloom swirling in the water. The churning clouds near Jupiter's pole appear like ocean currents on Earth — as if you're looking at small edges and meandering fronts in the Baltic Sea. European Space Agency Vortexes on Jupiter If you looked at the churning clouds near Jupiter's pole, they appear like ocean currents on Earth - as if you're looking at small edges and meandering fronts in the Baltic Sea. 'This looks so much like turbulence I'm seeing in our own ocean. They must be covered by at least some similar dynamics,' Lia Siegelman, a physical oceanographer at Scripps Institution of Oceanography, recalled the first time she saw images of vortexes from NASA's Juno mission, which entered Jupiter's orbit in 2016. Advertisement Working with planetary scientists, she applied her understanding of the ocean physics on Earth to the gas giant in computer models. Whether it's in air or water on any planet, she found the laws of physics that govern turbulent fluids is the same (even though the vortex on Jupiter is about 10 times larger than one on Earth). When cyclones and anticyclones (which spin in the opposite direction) interact in the ocean, they create a boundary of different water masses and characteristics - known as a front. She and her colleagues found the same phenomenon occurs in cyclones at Jupiter's poles, showing similar swirls. 'By studying convection on Earth, we were also able to spot that phenomenon occurring on Jupiter,' Siegelman said, even though Jupiter has relatively little data compared to Earth. Related : She and her colleagues also found a pattern never seen on Earth before: a cluster of cyclones in a symmetrical, repeating pattern near the poles of Jupiter. These 'polar vortex crystals' were observed in 2016 and have remained in place since. Despite never seeing them on Earth, she and other planetary scientists collaborated to reproduce these swirls in computer models - relying on 'just very simple physics.' 'Planetary scientists use a lot of the weather models that have been developed to study either the ocean or the atmosphere,' Siegelman said. 'By just knowing so much about the ocean and the atmosphere, we can just guide our analysis.' Advertisement This NASA handout photo shows beds of sandstone inclined to the southwest toward Mount Sharp and away from the Gale Crater rim on Mars. HANDOUT Dust storms on Mars If you plan to move to Mars, be prepared to face the dust storms. At their most intense, they can engulf the entire planet and last from days to months. The dirt can block sunlight and coat infrastructure. While scientists have observed many of these storms, they still don't know how to predict them. Dust storms operate similarly on Earth and Mars. Dust is lifted and heated, and rises like a hot-air balloon, Rafkin said. The rising air will suck in air from below to replace it. Air pressure drops near the surface, sucking in more wind that lifts the dust. As Mars spins, the angular momentum causes the dust storm to rotate. In reality, Martian dust storms are more similar to hurricanes on Earth in terms of their scale and circulation, said planetary scientist Claire Newman. She said the sources are different (Mars is a dust planet, whereas Earth is a water planet), but they have a similar effect on temperature and winds. But it's still unknown how these Martian dust storms form. On Earth, a winter storm with a cold front can lift the dust; scientists sometimes see similar dust lifting along cold fronts on Mars, but many storms just seem to pop up. Related : To predict a dust storm, scientists need to understand the circulation patterns on Mars - forecasting the cold front that can lift the dust, for instance. But it's something researchers don't yet understand. Wind measurements are scarce on Mars, aside from a few scattered measurement sites on its surface. With adjustments, Earth-based models can simulate the conditions that can lead to the uplifting winds and dust storms. 'Almost everything that we know about the circulation patterns on Mars come from models,' said Rafkin, adding that scientists 'have effectively no observations of the movement of the air on Mars.' Advertisement In this photo, sand blowing off fields creates a dust storm near Morton, Texas, in May 2021. Dust storms operate similarly on Earth and Mars. Jude Smith/Associated Press The models currently serve as the best way to understand dust storms on the Red Planet, unless more dedicated studies and stations are added, similar to Earth. 'We're basically applying these models to try and get a sense of what the environment is,' said Newman, 'before we send robots or potentially people there.' Rain on Titan The second-largest moon in our solar system, Titan is the only other known world besides Earth that has standing bodies of rivers, lakes and seas on its surface - consisting of liquid methane instead of water. That's partly why some scientists think it could be a future home for Earthlings, if we can just figure out the 750-million-mile journey and learn how to survive the minus-179 degree Celsius surface temperatures. But how did those lakes and oceans fill up? Even though it rains methane, the precipitation on Titan is very similar to that on Earth, Rafkin said. On Earth, take a chunk of air with water vapor, cool it off and the air becomes saturated to form a cloud. Those small cloud droplets can bump into one another or take in more water vapor to grow bigger. But eventually, the water vapor starts to condense into a liquid and brings rain. We've seen this process take place on Earth both naturally in the atmosphere and in labs enough times to understand the physics. But limited observations on Titan - effectively only visiting its atmosphere a handful of times - have caused scientists to turn to models. Using the same underlying physics, scientists can model the cloud-making process on this foreign body. And, the modeled clouds look a lot like the few they have observed in real life on Titan. Advertisement This November 2015 composite image made available by NASA shows an infrared view of Saturn's moon, Titan, as seen by the Cassini spacecraft. Titan is the only other known world besides Earth that has standing bodies of rivers, lakes and seas on its surface. AP 'If we try to model them and we get clouds, but they look totally bizarre and different than what we're observing, then that's an indication that maybe we're not representing the cloud processes correctly,' Rafkin said. 'But as it turns out, for the most part, when we model these things, we can produce clouds that look reasonably close to what we've observed.' Because of its incredibly dense atmosphere, Titan has storm clouds - two to four times taller than those on Earth - that are able to produce feet of methane rain. While scientists haven't observed such huge volumes, they have modeled the deluges based on the surface darkening as a storm passed - similar to how rain on soil or pavement darkens the surface on Earth. It's still a mystery where the methane comes from. But at least we know to bring a very, very sturdy raincoat if we ever visit Titan.

Forbes

15 hours ago

• Forbes

ESA's Solar Orbiter Should Solve Mystery Of Sun's Outermost Atmosphere

ESA's Solar Orbiter mission will face the Sun from within the orbit of Mercury at its closest ... More approach. The European Space Agency's Solar Orbiter mission recently stunned the world with the first-ever full images of our Sun's South pole, proving that this was going to be a mission like no other. Using an orbital gravity assist from the planet Venus, the Solar Orbiter mission spacecraft was able to maneuver into an orbit that has taken it to an angle 17 degrees below the Sun's equator. Over the coming years, the spacecraft will tilt its orbit even further, so the best views are yet to come, says ESA. The 1.2-billion-euro Solar Orbiter mission, with NASA participation, should finally help us understand the origin of the Sun's solar winds as well as our understanding of the Sun's poles. And arguably most importantly, it should solve the puzzle of why our star's outermost atmosphere, or corona, is heated to millions of degrees Kelvin and is thus so much hotter than the Sun's own surface. By contrast, our Sun's visible photosphere, or surface, averages only 5,500 degrees K. With Solar Orbiter, we are clearly seeing energy releases on the nano-flare scale, Daniel Mueller, a solar physicist and ESA project scientist for both ESA's SOHO and Solar Orbiter missions to the Sun, tells me in his office in The Netherlands. But the question is, would these nano-flares continue like that infinitely, or is there a certain lower limit to the production of these nano-flares, Mueller wonders. The puzzle is whether these nano-flares are enough to heat up the Sun's corona to the temperatures with which it is routinely measured. A Unique View Launched in 2020, from its highly elliptical orbit just inside Mercury's perihelion, the closest point in our innermost planet's solar orbit, the ESA spacecraft offers the best views yet of our own yellow dwarf star. We can see on scales down to about 200 kilometers on the Sun, which shows us a lot of dynamics of our star, says Mueller. And thanks to its newly tilted orbit around the Sun, the European Space Agency-led Solar Orbiter spacecraft is the first to image the Sun's poles from outside the ecliptic plane (the imaginary geometric plane in which our Earth orbits the Sun), says ESA. We observed the Sun's North pole at the end of this past April, says Mueller. But we passed the Southern pole first and then the Northern pole six weeks later, he says. At the moment, as seen from Earth, the Solar Orbiter is almost behind the Sun, so the data downlink has slowed to a trickle. But by early October, Mueller expects to have downloaded all the data from Solar Orbiter's Spring polar observations of the Sun. And within a matter of two to three months after the data is on the ground, the first scientific results will have been written up and submitted to journals for publication, says Mueller. These observations are also key to understanding the Sun's magnetic field and why it flips roughly every 11 years, coinciding with a peak in solar activity, says ESA. The spacecraft's instruments show that the Sun's South pole is a bit of a magnetic mess now, with both North and South polarity magnetic fields present, ESA notes. Ready To Flip Right now, there is not a clear dominant magnetic polarity, but a mix of the two, says Mueller. And that is exactly what you would expect to find during the maximum of the Sun's activity cycle, when the magnetic field is about to flip, he says. The real applications are for space weather predictions. Case in point, better space weather forecasting may have saved many of Elon Musk's 523 Starlink satellites that reentered Earth's atmosphere between 2020 and 2024. This period coincides with the rising phase of solar cycle 25, which has shown itself to be more intense than the previous solar cycle, the authors of a 2025 paper appearing in the journal Frontiers in Astronomy and Space Sciences write. Our results indisputably show that satellites reenter faster with higher geomagnetic activity, the authors note. There was a big solar storm that caused the earth's upper Earth atmosphere to expand, so, the satellites experienced more drag, and therefore didn't make it to orbit, says Mueller. One option may have been simply to hold off on launches until this increased period of solar activity enabled a less risky geomagnetic environment in Earth's upper atmosphere. The hope is that the Solar Orbiter mission and other missions like it will lead to better and more reliable space weather predictions that could potentially save hundreds of millions of dollars in the commercial satellite industry. Solar Orbiter should do its share in solving both pure solar physics conundrums as well as in more practical applications like space weather. The good news is that the spacecraft still has plenty of fuel left. Our current funding goes until the end of 2026, but because we had a picture-perfect launch provided by United Launch Alliance and NASA, we saved a lot of fuel, says Mueller. So, the onboard fuel reserves are so large that we can keep going for a long time, he says.

Yahoo

16 hours ago

• Yahoo

Just 1 dose of magic mushroom compound eases depression for at least 5 years in most patients, small study suggests

When you buy through links on our articles, Future and its syndication partners may earn a commission. DENVER—Psilocybin, the main psychoactive ingredient in magic mushrooms, can alleviate depression for at least five years after a single dose, a new study finds. The research, presented June 18 at the Psychedelic Science 2025 conference in Denver, focused on patients with major depressive disorder (MDD), which is often called clinical depression. The serious mood disorder causes a persistent feeling of sadness and a loss of interest or pleasure in activities that were once enjoyable. The most common treatments for MDD include talk therapy and medications such as selective serotonin reuptake inhibitors, and both can take a long time to show any benefits. When early studies hinted at psilocybin's potential as an antidepressant, a team of researchers undertook the first-ever randomized clinical trial to explore the use of the psychedelic for treating severe depression. The trial included 24 patients, half of whom received psilocybin at the very start of the trial and half of whom received the same dose eight weeks later—the "waitlist" group. Each patient also received 11 hours of psychotherapy. Even in that short time frame, "there was a significant reduction in depression in the immediate-treatment group compared to those on the waitlist," study co-author Alan Davis, director of the Center for Psychedelic Drug Research and Education at The Ohio State University, told Live Science. Once all of the patients had completed the four-week study, the psilocybin appeared to be four times more effective than traditional antidepressant medications, based on previous research data. One month after the treatment, 17 patients had relieved symptoms, including 14 who were in full remission from depression. Patients also responded much faster to psilocybin than is typical for conventional antidepressants. But do these benefits of psilocybin last? Related: Magic mushrooms temporarily 'dissolve' brain network responsible for sense of self Very few long-term studies of psilocybin for depression have been conducted to date, said Dr. Charles Raison, a professor of human ecology and psychiatry at the University of Wisconsin-Madison who was not involved in the research. "They are very difficult to do because people drop out," Raison told Live Science in an email. "But also because they go on all sorts of other treatments that obfuscate the degree to which any longer lasting benefits result from the psychedelic or because the participant got therapy or restarted an antidepressant." To investigate whether the benefits for psilocybin lasted and if the patients had experienced any side effects, the researchers contacted the original trial participants several years later to request their enrollment in a follow-up study. Twenty-one patients enrolled, and their clinicians rated any changes in the participants' levels of depression from before the original treatment to the present day. The patients also filled out a series of self-reported, online questionnaires and met up with clinicians to document their ability to engage in everyday tasks, their levels of anxiety and their general mental health. The researchers assumed that the three patients that didn't sign up for the follow up, and the three that didn't complete the questionnaires had not remained in remission. Even so, the researchers found that 67% of the participants who had suffered from depression half a decade earlier remained in remission after a single psychedelic therapy session. These patients also reported less anxiety and less difficulty functioning on a daily basis. In general, the two-thirds of the patients who responded well reported lasting positive changes in their mindsets, emotional health and relationships. "I'm excited by these deeper aspects of their lives that really speaks to the importance of these interventions beyond just reduction of depression," Davis said. RELATED STORIES —Psychedelics rapidly change the brain. Here's how. —Australia clears legal use of MDMA and psilocybin to treat PTSD and depression —'Magic mushroom' treatment for depression inches closer to approval Most of the patients shared that, following the original treatment, they'd engaged in self-reflection and therapy to help understand themselves and navigate life's challenges. Davis hypothesizes that the psychedelic experience catalyzes a deeper therapy process and would like to conduct future studies comparing the relative influences of psilocybin and psychotherapy in alleviating depression. "The biggest caveat of this study is the small sample size, and the fact that the original trial showed larger antidepressant effects than subsequent larger multi-site studies seem to be showing," Raison said. In a multi-site clinical trial with 233 participants, 37% of the 79 who received a single 25 mg dose of psilocybin, coupled with psychotherapy, went into remission from major depression. While these trials report less widespread antidepressant effects, they support the idea that psilocybin can effectively treat depression, Davis said, and he is keen to see how the findings of multi-site trials hold up five years post-treatment.