Connect with us

Published

2 years ago

on

Two NASA spacecraft at Mars — one on the surface and the other in orbit — have recorded the biggest meteor strikes and impact craters yet.

The high-speed barrages last year sent seismic waves rippling thousands of miles across Mars, the first ever detected near the surface of another planet, and carved out craters nearly 500 feet (150 meters) across, scientists reported Thursday in the journal Science.

The larger of the two strikes churned out boulder-size slabs of ice, which may help researchers look for ways future astronauts can tap into Mars’ natural resources.

The Insight lander measured the seismic shocks, while the Mars Reconnaissance Orbiter provided stunning pictures of the resulting craters.

Imaging the craters “would have been huge already,” but matching it to the seismic ripples was a bonus, said co-author Liliya Posiolova of Malin Space Science Systems in San Diego. “We were so lucky.”

Mars’ atmosphere is thin unlike on Earth, where the thick atmosphere prevents most space rocks from reaching the ground, instead breaking and incinerating them.

A separate study last month linked a recent series of smaller Martian meteoroid impacts with smaller craters closer to InSight, using data from the same lander and orbiter.

The impact observations come as InSight nears the end of its mission because of dwindling power, its solar panels blanketed by dust storms. InSight landed on the equatorial plains of Mars in 2018 and has since recorded more than 1,300 marsquakes.

“It’s going to be heartbreaking when we finally lose communication with InSight,” said Bruce Banerdt of NASA‘s Jet Propulsion Laboratory, the lander’s chief scientist who took part in the studies. “But the data it has sent us will certainly keep us busy for years to come.”

The incoming space rocks were between 16 feet and 40 feet (5 meters and 12 meters) in diameter, said Posiolova. The impacts registered about magnitude 4.

The larger of the two struck last December some 2,200 miles (3,500 kms) from InSight, creating a crater roughly 70 feet (21 meters) deep. The orbiter’s cameras showed debris hurled up to 25 miles (40 kms) from the impact, as well as white patches of ice around the crater, the most frozen water observed at such low latitudes, Posiolova said.

Posiolova spotted the crater earlier this year after taking extra pictures of the region from orbit. The crater was missing from earlier photos, and after poring through the archives, she pinpointed the impact to late December. She remembered a large seismic event recorded by InSight around that time and with help from that team, matched the fresh hole to what was undoubtedly a meteoroid strike. The blast wave was clearly visible.

Scientists also learned the lander and orbiter teamed up for an earlier meteoroid strike, more than double the distance of the December one and slightly smaller.

“Everybody was just shocked and amazed. Another one? Yep,” she recalled.

The seismic readings from the two impacts indicate a denser Martian crust beyond InSight’s location.

“We still have a long way to go to understanding the interior structure and dynamics of Mars, which remain largely enigmatic,” said Doyeon Kim of ETH Zurich’s Institute of Geophysics in Switzerland, who was part of the research.

Outside scientists said future landers from Europe and China will carry even more advanced seismometers. Future missions will “paint a clearer picture” of how Mars evolved, Yingjie Yang and Xiaofei Chen from China’s Southern University of Science and Technology in Shenzhen wrote in an accompanying editorial.

Affiliate links may be automatically generated – see our ethics statement for details.

Related Topics:
Continue Reading

Science

First-Ever Female Burial With Weapons Uncovered in Hungary

Published

7 hours ago

on

January 4, 2025

By

First-Ever Female Burial With Weapons Uncovered in Hungary

The first confirmed case of a female burial with weapons from the 10th century in the Carpathian Basin, Hungary, has been uncovered. Skeletal remains and grave goods, including weaponry, were identified at the Sárrétudvari-Hízóföld cemetery. This discovery, described by experts, challenges prior assumptions about societal roles during the Hungarian Conquest period, a time marked by mounted archers and frequent conflicts. Although evidence of weapons was present, researchers approached conclusions cautiously, ensuring findings were grounded in detailed analysis.

Archaeological Findings and Methodology

The study was led by Dr. Balázs Tihanyi and his colleagues, published in PLOS ONE. As reported by Phys.org, the burial contained a silver penannular hair ring, bell buttons, a bead necklace, and archery-related items such as an arrowhead, quiver parts, and an antler bow plate. Genetic and morphological tests confirmed the individual, referred to as SH-63, was female, despite the poor preservation of skeletal remains.

Dr. Balázs Tihanyi, leader of the research team, told the publication that the combination of grave goods in SH-63’s burial was unique within the cemetery, blending typically male and female items.

Challenges in Determining Warrior Status

The presence of weapons did not lead to assumptions about SH-63’s status as a warrior. Researchers noted that being part of a warrior class involved specific societal roles, and physical evidence alone is insufficient for confirmation.

Indicators such as joint changes and trauma were identified, possibly suggesting activities like horse riding or weapon use. However, it was emphasised that these signs could also result from daily life unrelated to warfare.

Historical Implications

It was reported that this discovery provides a glimpse into the complexity of life in 10th-century Hungary, with SH-63’s burial raising questions about gender roles and social structures of the time. Further investigations are planned to compare this case with others from the same period, aiming to deepen understanding of the era’s societal dynamics.

Continue Reading

Science

JUNO Neutrino Detector Nears Completion, Set to Begin Operations in 2025

Published

7 hours ago

on

January 4, 2025

By

JUNO Neutrino Detector Nears Completion, Set to Begin Operations in 2025

Physicists are finalising the Jiangmen Underground Neutrino Observatory (JUNO), a facility designed to unravel the mysteries surrounding neutrinos, subatomic particles with no electric charge and minimal mass. Scheduled to commence data collection in summer 2025, the observatory aims to identify the heaviest among the three neutrino types. Situated 700 metres beneath the ground in China, the project represents a significant step in the study of these elusive particles and their antiparticle counterparts, antineutrinos.

Key Features of the JUNO Detector

According to a Science News report, the observatory features a 35-metre-wide acrylic sphere at its core, which will hold 20,000 metric tons of liquid scintillator. This liquid is engineered to emit light when particles from an antineutrino interaction are detected. The setup includes tens of thousands of photomultiplier tubes to capture these light signals. To minimise interference from other particles, the detector is surrounded by a water-filled cylindrical pit, the filling of which began on December 18, 2024.

Focus on Antineutrinos

Antineutrinos from two nuclear power plants located 50 kilometres away will be observed, offering insights into their properties and interactions. According to project sources, this experimental setup will not only aid in determining neutrino masses but also contribute to broader physics research, including the understanding of matter-antimatter asymmetry.

Significance of JUNO

Reports indicate that this observatory will be the largest of its kind globally, with scientists expecting groundbreaking findings. By investigating antineutrinos in detail, JUNO is anticipated to enhance understanding of subatomic physics and the fundamental structure of the universe.

The collaborative efforts of international teams underscore the importance of the project in advancing neutrino research. This facility marks a major advancement in the quest to uncover the properties of neutrinos, with its findings expected to have far-reaching implications in the field of particle physics.

Continue Reading

Science

Tristan Da Cunha: The Earth’s Most Remote Inhabited Island

Published

8 hours ago

on

January 4, 2025

By

Tristan Da Cunha: The Earth's Most Remote Inhabited Island

Tristan da Cunha, a remote group of volcanic islands in the South Atlantic Ocean, is renowned for being the most isolated inhabited location on the planet. This British Overseas Territory houses a farming community of approximately 250 people on its only populated island, Tristan da Cunha. The settlement, Edinburgh of the Seven Seas, is surrounded by rugged landscapes and extraordinary biodiversity, providing a unique environment for both its residents and visiting researchers. The archipelago is situated over 1,500 miles southwest of St. Helena and stretches across vast expanses of the Atlantic.

Formation Through Ancient Geological Processes

According to a BBC report, the islands were formed millions of years ago due to volcanic activity linked to the breakup of Gondwana, an ancient supercontinent. The hotspot now referred to as the Walvis Ridge Hotspot is believed to have played a significant role in this process. As tectonic plates shifted, magma from deep within Earth’s mantle created these volcanic islands.

The main island, characterised by Queen Mary’s Peak, features a striking central crater containing a heart-shaped lake. This natural feature freezes in winter and thaws during summer, attracting adventurous hikers seeking its summit.

Biodiversity and Accessibility

A Live Science report highlight that the region is a haven for wildlife, including seals, northern rockhopper penguins, and albatrosses. Despite its rich ecosystem, reaching Tristan da Cunha is challenging, requiring a six-day boat journey from South Africa. This isolation has shaped the lives of its inhabitants, who primarily rely on farming for sustenance.

Volcanic Legacy and Extinct Peaks

As per reports, Tristan da Cunha and its neighbouring islands were shaped by volcanic eruptions along the ocean floor. These volcanoes, fed by magma plumes, gradually became inactive as tectonic movement carried them away from the hotspot. Each island in the archipelago represents a distinct phase of this geological evolution, forming a snapshot of Earth’s dynamic history.

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.


Search for Elusive Missing Link Black Holes Continues as Omega Centauri Observation Turns Out to Be a Dud

Continue Reading

Trending