Headline: Mars in 2024: Discoveries Unveil Lakes, Mountains, & Mysteries
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In 2024, Mars continues its streak of extraordinary revelations, offering unique insights into the planet’s rich history and its potential future as a human habitat. Despite the loss of NASA’s Ingenuity helicopter and a wheel malfunction on the Curiosity rover, this year stands out with fascinating discoveries about Mars’ magnetic field and signs of past life beyond Earth. Here are the top 10 Mars discoveries of 2024, as reported by livescience.com:
1. Enigmatic mass beneath Mars’ surface
The most significant discovery of 2024 on Mars is the detection of a massive water reservoir hidden beneath the planet’s surface. Large enough to cover Mars with a global ocean over a mile deep, this reservoir lies between 7 to 13 miles beneath the surface, as inferred from seismic data collected by NASA’s InSight lander over four years. Although inaccessible with current Earth-based drilling techniques, this reservoir could potentially hold the key to future human habitability and may even harbor extraterrestrial life.
2. Spider-like formations teeming in Inca City
‘Spider-like’ features have been a known phenomenon on Mars since the 1970s, appearing during Mars’ spring when carbon dioxide ice sublimes, pulling dust from below and forming peculiar patterns on the surface. In April, Mars Express orbiter from ESA and the ExoMars Trace Gas Orbiter revealed numerous of these formations in the southern polar region’s Inca City. Later in September, researchers successfully imaged these formations on Earth for the first time, paving the way for further investigation.
3. Mysterious blobs and the Mars hound
In September, hundreds of mysterious dense blobs, including one resembling a dog (the Mars hound), were discovered under the icy seabed surrounding the north pole, thanks to a newly created gravity map. This map, produced using data from InSight and Mars Express, uncovered 20 structures with densities between 300 to 400 kg/m³ higher than their surroundings. Additionally, the map revealed a massive, ancient lava flow stretching over 1,750 km beneath Olympus Mons.
4. Hidden supervolcano exposed
Scientists presumed that all of Mars’ significant geological structures had been discovered. However, in March, a massive, long-extinct supervolcano was unveiled – a imposing 450 km-wide mountain range buried under eroded remains with patches of ancient glaciers, suggesting it was once a significant astrobiology research site.
5. Smiling face in the dunes
In September, researchers spotted a ‘smiling face’ on Mars’ surface, comprised of ancient salt deposits encircling two meteor craters. Imaged by the ExoMars Trace Gas Orbiter, this peculiar feature provided conditions thought to be optimal for biological activity and preservation.
6. Frozen peaks dabbling in water
Marsh mountain peaks appeared scorching and dry, but recent findings suggest otherwise. In June, scientists discovered up to 150,000 metric tons of frost on four Martian peaks – equivalent to 60 Olympic-sized swimming pools. Despite intense sunlight at the equator, these frozen caps survive due to nightly refreezing.
7. Martian rocks: peculiar and promising
In 2024, NASA rovers turned up numerous strange rocks on Mars. In January, Curiosity found a spearhead-shaped rock resembling Starfleet’s insignia. In June, Perseverance discovered a pale rock akin to Grand Canyon’s "Atoko Point," offering new insights into Mars’ past. Later in September, Perseverance found a zebra-stripes "Freya Castle" rock of unknown origin, potentially formed through volcanic processes.
8. Dark, mysterious patches
In April, ESA’s Mars orbiter captured dark spots near the south pole, much darker than their icy surroundings. Nicknamed "enigmatic dark regions," these patches are thought to form when CO2 ice repeatedly freezes and sublimes, drawing dark dust and creating polygon shapes that absorb more sunlight, causing CO2 ice to sublime faster.
9. Green specks defy expectations
Long before the first Martian human settlers, fictional depictions of alien life often painted images of green beings. In August, Perseverance snapped pictures of tiny green specks, roughly 2 cm in diameter, on Martian rocks. These specks resemble rust stains on Earth, formed by iron oxidation – possibly due to microbial influences or purely geological processes.
10. Buried ice blocks surprise scientists
Beyond newly discovered massive undersea lakes and glistening frozen mountain peaks, researchers uncovered immense blocks of ice hidden beneath Mars’ equatorial region. Stretching 3.7 km, these ice blocks lie beneath a layer of dust and debris in the Fossae of Medusae Formation, and aren’t the first sign of equatorial ice found on Mars.
These top 10 Mars discoveries in 2024 further our understanding of the Red Planet, bringing us one step closer to unraveling its secrets and potentially establishing human habitats there.
Source: livescience.com
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