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After the successful launch of Chandrayaan-3 on GSLV Mark 3 (LVM 3) heavy-lift launch vehicle on Friday, Director of Indian Space Research Organisation (ISRO) S Somanath said that landing is one important step for further exploration. 

“Chandrayaan-3 is a very important step…Landing this time is very important. Unless you land, you cannot take samples, you cannot land human beings, and you cannot create moon bases. So, landing is one important step for further exploration,” said ISRO chief S Somanath.

Chandrayaan-3 is the ISRO’s follow-up attempt after the Chandrayaan-2 mission faced challenges during its soft landing on the lunar surface in 2019 and was eventually deemed to have failed its core mission objectives.

Earlier today, Chandrayaan-3 was launched on GSLV Mark 3 (LVM 3) heavy-lift launch vehicle successfully from the Satish Dhawan Space Centre in Andhra Pradesh’s Sriharikota as per the scheduled launch time.

The journey from Earth to the moon for the spacecraft is estimated to take about a month and the landing is expected on August 23. Upon landing, it will operate for one lunar day, which is approximately 14 Earth days. One day on the Moon is equal to 14 days on Earth.

Chandrayaan-3, India’s third lunar exploration mission, will make India the fourth country after US, China, and Russia, to land its spacecraft on the surface of the moon and demonstrate the country’s abilities for safe and soft landing on the lunar surface.

Chandrayaan-3 will be inserted into the Lunar Transfer Trajectory after the orbit-raising maneuvers. Covering a distance of over 3,00,000 km, it will reach the Moon in the coming weeks. Scientific instruments onboard will study the Moon’s surface and enhance our knowledge.

Chandrayaan-3 is equipped with a lander, a rover and a propulsion module. It weighs around 3,900 kilograms.

Moon serves as a repository of the Earth’s past and a successful lunar mission by India will help enhance life on Earth while also enabling it to explore the rest of the solar system and beyond.

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1.4 Million-Year-Old Jaw Identified as New Paranthropus Species in South Africa

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February 8, 2025

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1.4 Million-Year-Old Jaw Identified as New Paranthropus Species in South Africa

A fossilised jawbone discovered in South Africa has been classified as belonging to a previously unidentified human relative. The specimen, estimated to be 1.4 million years old, has been attributed to the genus Paranthropus, known for its distinctive dental structure. Unlike its robust counterparts, the newly identified species exhibits a smaller jaw and teeth, suggesting dietary differences. The findings indicate that multiple hominin species coexisted in southern Africa during that period, adding to the complexity of early human evolution.

Findings from the Research

According to a study published in the Journal of Human Evolution, the fossil jaw, catalogued as SK 15, was unearthed in 1949 at Swartkrans, a well-known paleoanthropological site in South Africa. Originally classified as Telanthropus capensis and later reassigned to Homo ergaster, recent analysis has challenged this classification. Clément Zanolli, a paleoanthropologist at the University of Bordeaux, told Live Science that advanced X-ray imaging was used to create virtual 3D models of the specimen. Internal and external dental structures were examined, revealing that SK 15 does not align with Homo species. The molars were found to be longer and more rectangular than those typically seen in Homo, with the jaw notably thicker than expected. These characteristics led researchers to identify it as a distinct species within the Paranthropus genus, named Paranthropus capensis.

Implications of the Discovery

As per the findings, Paranthropus capensis existed alongside Paranthropus robustus around 1.4 million years ago. Variations in jaw and tooth structure suggest different dietary habits, with P. robustus likely relying on a highly specialised diet due to its large molars, while P. capensis may have consumed a broader range of food sources.

Zanolli noted that the fossil record in Africa remains incomplete, leaving open the question of whether P. capensis persisted beyond its currently known timeframe. The possibility of additional unidentified species in the hominin lineage has been highlighted, underlining the need for further excavation and study in the region.

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Extreme Arctic Warming Sees North Pole Temperatures Rise Above Freezing

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February 8, 2025

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Extreme Arctic Warming Sees North Pole Temperatures Rise Above Freezing

A dramatic rise in temperature was recorded at the North Pole, with levels surpassing the freezing point due to an extreme winter warming event. Reports indicate that temperatures climbed 20 degrees Celsius above the seasonal average, raising concerns among climate scientists about its impact on Arctic ice loss and long-term warming trends. The event, which occurred over the weekend, is said to be among the most extreme instances of winter warming recorded in the region.

Warming Near The North Pole

As reported by the Guardian, temperatures at the North Pole exceeded 0 degrees Celsius on Sunday. Data from the European Union’s Copernicus Climate Change Service confirmed the significant warming trend, while an Arctic snow buoy logged a temperature reading of 0.5 degrees Celsius. Mika Rantanen, a researcher at the Finnish Meteorological Institute, told the Guardian that although estimating exact temperature variations in remote Arctic locations remains difficult, models suggest a deviation of more than 20 degrees Celsius.

Weather system over Iceland linked to Arctic temperature rise

Julien Nicolas, a senior scientist at the Copernicus Climate Change Service, told the Guardian that a deep low-pressure system near Iceland was responsible for directing warm air toward the Arctic. The phenomenon was further amplified by warm sea temperatures in the northeastern Atlantic. Nicolas stated that while such weather events are rare, further analysis is required to determine their frequency.

Historical precedents and climate change concerns

Previous instances of extreme Arctic warming have been recorded. In December 2016, temperatures at the North Pole reached approximately 32 degrees Fahrenheit during a winter heatwave.

Studies indicate that the Arctic is warming at a rate nearly four times faster than the rest of the world, a phenomenon known as Arctic amplification. The loss of reflective sea ice accelerates warming by increasing the absorption of solar energy. Indigenous communities and Arctic wildlife, including polar bears and whales, are particularly vulnerable to these changes, which threaten their habitats and long-term survival.

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Astronaut Vision Changes in Space, Pose Risks for Mars Exploration

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February 8, 2025

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Astronaut Vision Changes in Space, Pose Risks for Mars Exploration

A significant number of astronauts spending extended time aboard the International Space Station (ISS) have reported changes to their vision, raising concerns for future deep-space missions. Reports indicate that 70 percent of astronauts who have spent between six to twelve months in microgravity have experienced noticeable shifts in eyesight. Symptoms linked to spaceflight-associated neuro-ocular syndrome (SANS) include swelling of the optic nerve, flattening at the back of the eye, and vision impairment. The phenomenon is attributed to fluid redistribution in microgravity, which increases pressure on ocular structures. While many astronauts recover upon returning to Earth, the long-term impact remains uncertain, making it a critical issue for extended missions beyond low Earth orbit.

Findings of the Study

According to a study, Microgravity, researchers led by Santiago Costantino at the Université de Montréal examined 13 astronauts who had spent five to six months on the ISS. Participants from the United States, Europe, Japan and Canada, with an average age of 48, were included in the research. Eye measurements were taken before and after spaceflight, focusing on ocular rigidity, intraocular pressure, and ocular pulse amplitude. The study identified a 33 percent decline in ocular rigidity, an 11 percent reduction in intraocular pressure, and a 25 percent drop in ocular pulse amplitude. Some astronauts also exhibited an increase in choroidal thickness beyond normal levels.

Concerns for Long-Duration Space Travel

SANS has been observed since the early 2000s, with similar symptoms reported by Russian cosmonauts aboard the Mir space station. NASA officially classified the condition in 2011. Bodily fluid shifts in microgravity are believed to be the primary cause, although the exact mechanisms remain under investigation. Countermeasures such as negative pressure devices, pharmaceutical treatments, and targeted nutrition plans are being explored to mitigate risks.

Potential Solutions and Future Research

According to reports, ongoing research aims to identify astronauts at higher risk of developing severe ocular issues. As reported by space.com, Costantino noted that changes in the mechanical properties of the eye could serve as biomarkers for SANS, potentially assisting in early detection and intervention. Space agencies continue to prioritise the development of strategies to protect astronaut vision for future deep-space missions, including those to Mars.

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