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New research has revealed that volcanic eruptions occurred on the Moon’s far side billions of years ago, comparable to those observed on its visible side. This discovery was made through an analysis of lunar soil samples brought back by China’s Chang’e-6 spacecraft, the first mission to collect and return materials from this largely unexplored lunar region.

According to papers published November 15 in Science and Nature, scientists from two independent research teams identified volcanic rock fragments in the samples. One of the pieces was determined to be approximately 2.8 billion years old, while another, even older fragment, was dated to 4.2 billion years. These findings provide evidence of prolonged volcanic activity on the far side of the Moon, an area previously lacking direct geological data.

Distinct Characteristics of the Moon’s Far Side

The Moon’s far side differs significantly from its near side, which faces Earth and has been better explored. While the near side features flat, dark plains formed by ancient lava flows, the far side is marked by craters and lacks similar volcanic formations. According to Qiu-Li Li, a co-author of the study from the Chinese Academy of Sciences, the stark geological contrasts between the two sides remain a subject of ongoing investigation.

Earlier research, including data from NASA‘s Lunar Reconnaissance Orbiter, hinted at a volcanic history for the far side. However, the recent findings, published in the journals Science and Nature, offer the first physical evidence confirming such activity.

China’s Lunar Missions in Focus

China has been instrumental in advancing lunar exploration. In 2019, the Chang’e-4 mission became the first to land on the Moon’s far side. The Chang’e-5 mission later returned samples from the near side in 2020. The current study builds on these achievements, shedding light on over a billion years of volcanic eruptions on the Moon’s hidden hemisphere. Further research is expected to clarify how and why volcanic activity persisted for such an extended period.

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Rare 2,000-Year-Old Gladiator Knife Handle Found Near Hadrian’s Wall

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Rare 2,000-Year-Old Gladiator Knife Handle Found Near Hadrian's Wall

Archaeologists have uncovered a remarkable 2,000-year-old Roman knife handle in Northumberland, England. The discovery, made in the River Tyne near Corbridge Roman Town, features a detailed depiction of a gladiator. This unique find sheds light on the influence and popularity of gladiators across the Roman Empire, including its farthest reaches in Britain.

As per a report by English Heritage, the handle, crafted from copper alloy, portrays a secutor gladiator, identifiable by his heavy armour and helmet. Secutors, named after the Latin term for “chaser,” were known for engaging in close combat against their agile counterparts, the retiarii. Notably, the figurine represents a left-handed fighter, a rarity in Roman culture, where left-handedness was often considered inauspicious. Researchers from English Heritage have suggested that this specific detail may indicate the handle was modelled after an actual gladiator, rather than serving as a general representation.

Gladiator Culture in the Roman Empire

Gladiatorial games were a significant feature of Roman public entertainment, drawing large crowds to amphitheatres across the empire. While these fighters were typically enslaved individuals or criminals, some gained celebrity status, despite their marginalised social standing. The events, often hosted by elite Roman citizens or emperors, aimed to display power and wealth.

Frances McIntosh, Collections Curator for Hadrian’s Wall and the North East at English Heritage, stated that gladiators’ popularity extended far beyond Rome, a fact underscored by the discovery of this artefact. Although memorabilia such as pottery and figurines have been documented, similar finds in Britain are considered rare.

Plans for Public Display

Corbridge Roman Town, originally established as a supply base in 79 AD, served as a key site during the Roman occupation of Britain until around 400 AD. English Heritage plans to exhibit the knife handle, along with other artefacts recovered from the river, at the Corbridge site next year.

This discovery continues to emphasise the enduring fascination with gladiators, both in ancient times and modern culture.

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Hubble shows cosmic collision of two galaxies in the Coma Cluster.

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Hubble shows cosmic collision of two galaxies in the Coma Cluster.

A captivating image of two interacting galaxies, known as MCG+05-31-045, has been shared by NASA and the European Space Agency (ESA) through the Hubble Space Telescope. It is located 390 million light-years away in the Coma Cluster. The smaller galaxy’s spiral arms appear to merge with the larger one, with a tail of material and a halo connecting the two, suggesting an ongoing collision that could eventually transform their structure entirely.

The Coma Cluster: A Rich Galactic Collection

The Coma Cluster, home to this galactic interaction, is a dense collection of over a thousand known galaxies. While most are elliptical in shape, these forms are typically created by gravitational interactions such as collisions. During these events, the structure of spiral galaxies is disrupted, and their gas is compressed, sparking bursts of new star formation. Once the massive blue stars exhaust their energy and die out, the galaxies are left with cooler, redder stars and little gas to sustain further star formation. Over time, such interactions result in the formation of elliptical galaxies.

The Future of MCG+05-31-045

Scientists believe that the same transformation is underway for MCG+05-31-045. As the smaller galaxy merges into its larger neighbour, gravitational forces will trigger intense star formation. This phase will not last indefinitely. Once the hot, massive stars die out, the resulting structure is likely to resemble the elliptical galaxies prevalent in the Coma Cluster. Despite the dramatic changes, this process will unfold over millions of years.

This image, captured by Hubble and processed by R. J. Foley from UC Santa Cruz, showcases the intricate dynamics of galactic evolution, offering a glimpse into the future of galaxies shaped by their cosmic interactions

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NASA Rockets Create Artificial Clouds Under Northern Lights in Norway

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NASA Rockets Create Artificial Clouds Under Northern Lights in Norway

A rare sight unfolded on November 10, as NASA launched rockets that created artificial clouds beneath auroras during a minor geomagnetic storm over northern Norway. The event took place near Andøya Space Center, a facility situated in an ideal location for studying geomagnetic activity due to its proximity to the Arctic Circle. Tour operator Ivar Sandland, who witnessed the spectacle, told Space.com about the unusual visual phenomena during his trip from Bodo to Tromso.

As per the report by the publication, Sandland, who runs Nordland Adventures, assumed it was a cloud at first glance. He later discovered through local news that the visible trails in the sky were part of NASA’s ongoing experiments.

VortEx Mission Studies Atmospheric Energy Flow

The event was part of NASA’s Vorticity Experiment (VortEx), which investigates energy dynamics in the turbopause, where the mesosphere and thermosphere meet at approximately 90 kilometres above Earth. The report further mentions that the rockets released trimethyl aluminium, a compound that reacts in the atmosphere to produce visible streaks. These artificial clouds are used to track gravity waves, aiding researchers in understanding their interactions at this altitude.

Sounding rockets, smaller suborbital vehicles designed for research purposes, were deployed for the experiment. The visual effects created by the chemical release offered scientists crucial data on energy transfer processes, while also captivating onlookers with an unusual display under the northern lights.

Ideal Location for Space Research

Andøya Space Center serves as a hub for launching rockets intended for atmospheric and geomagnetic research. Charged particles from the sun, guided by Earth’s magnetic field towards the poles, produce auroras by interacting with gases in the upper atmosphere. This makes northern Norway an optimal site for observing these interactions.

Such experiments offer insights into atmospheric science while fostering curiosity among local residents and visitors, highlighting the intersection of research and natural wonder.

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