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ISRO plans to launch Chandrayaan-3, its third mission to the moon, in June next year with a more robust lunar rover onboard which is crucial for future inter-planetary explorations.

The space agency has also lined up the first test flight of the ‘abort mission’ for Gaganyaan, the country’s first human spaceflight, early next year.

“Chandrayaan-3 (C-3) launch will be in June next year onboard the Launch Vehicle Mark-3 (LVM3),” said Indian Space Research Organisation (ISRO) chairman S Somnath while interacting with media personnel on the sidelines during an event.

He said ISRO plans to fly Indian astronauts into orbit by the end of 2024 after carrying out successful abort missions and uncrewed test flights.

India’s maiden attempt to land a rover on the moon ended in failure after the Vikram lander onboard the Chandrayaan-2 mission crashed on the surface of the moon in September 2019.

“C-3 is ready now. It is not a replica of C-2. The rover is there. The engineering is significantly different. We have made it more robust so that it does not have problems like last time,” Somnath said.

“There are many changes. The impact legs are stronger. It will have better instrumentation. In case something fails, something else will take over,” the ISRO chairman said.

He said the rover will also have different methods to calculate the height to be travelled, identify hazard-free locations and have better software.

On the human spaceflight Gaganyaan, Somnath said ISRO would carry out six test flights before actually flying humans into orbit.

Somnath said the preparations for the Gaganyaan mission were progressing at a “slow and steady pace”.

“This is the right way to put it. It is a very complex mission. We cannot boast about it. It requires very critical steps to be crossed,” he said.

The first un-crewed flight of Gaganyaan will be after two abort missions to demonstrate that the space agency has the capabilities to rescue the crew in case of any eventuality.

The first abort mission is likely to be carried out in trans-sonic conditions when the spacecraft is travelling at the speed of sound after reaching an altitude of 10-15 kms, Somnath said.

The second would entail demonstrating crew rescue capabilities when the spacecraft is travelling at twice the speed of sound and in “not so good” aerodynamic conditions.

As part of the abort mission, the space scientists will have to sail the crew from the launch vehicle using a saving system, land the capsule carrying the crew in water and collect it.

“If this is successful, we will repeat it once again and then we will go for an unmanned mission. The unmanned mission will be a full-fledged rocket. It will go to orbit, then it will come back,” Somnath said.

“We will repeat the abort missions two more times followed by another unmanned mission,” he said, adding that the human space flight will happen if these six test flights are successful.

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Blue Origin’s New Glenn Rocket Moves Closer to First Orbital Launch

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September 27, 2024

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Blue Origin’s New Glenn Rocket Moves Closer to First Orbital Launch

Blue Origin’s New Glenn rocket, the much-anticipated rival to SpaceX‘s Falcon Heavy, has taken a major step forward with a successful second-stage hot-fire test. This crucial test was conducted to validate key interactions between the rocket’s subsystems, its two BE-3U engines, and the ground control systems. The test, which lasted 15 seconds, represents a major advancement for New Glenn as it heads towards its first orbital launch in November 2024.

Validating the Second Stage Systems

The recent test focused on the New Glenn rocket’s second stage, ensuring its subsystems work cohesively under real-world conditions. The BE-3U engines, designed for high-energy missions, performed exceptionally well, demonstrating the thrust vector control system and the tank pressurization system to steer and fuel the rocket during its flight. The test also allowed Blue Origin’s launch operations team to rehearse critical launch procedures, ensuring the team was prepared for the November mission. This launch will take place at Cape Canaveral, Florida, from Launch Complex 36.

Looking Ahead: New Glenn’s First Mission

After several delays, Blue Origin has confirmed that New Glenn’s first mission (NG-1) will transport the Blue Ring orbital platform, designed by Blue Origin, into space. This mission marks a significant milestone for the company, which has thus far focused mainly on suborbital tourism with its New Shepard rocket.

A Rival to SpaceX

While Blue Origin has been slower to market, New Glenn is seen as a potential game changer in the commercial space industry. With a height of over 320 feet and its powerful BE-3U and BE-4 engines, New Glenn is built for ambitious missions, ranging from low Earth orbit to geosynchronous orbit.

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Depression Could Be Linked With Brain’s Attention Guiding Network

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September 27, 2024

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Depression Could Be Linked With Brain’s Attention Guiding Network

New research is shedding light on the brain‘s role in depression, particularly through the discovery of an enlarged salience network in people suffering from the condition. This brain network, located primarily in the frontal cortex and striatum, is responsible for processing rewards and focusing attention on significant stimuli. The findings open promising avenues for early detection and personalised treatments for depression. The study claims that the brain network responsible for guiding attention was twice as large in those individuals who later developed symptoms of depression.

What is the Salience Network?

The salience network helps the brain determine which stimuli are most important and worthy of attention. It processes rewards and manages our focus on both external and internal factors. In people with depression, researchers have discovered that this network is significantly larger, potentially explaining the cognitive and attentional issues often associated with the disorder.

The Significance of This Enlargement

Studies have shown that the salience network in individuals with depression can be almost twice the size of that in healthy controls. Interestingly, this expansion does not fluctuate with changes in mood, suggesting that it is a stable trait rather than a symptom-based occurrence. This has led researchers to believe that an enlarged salience network could serve as an indicator of depression risk, even before the condition develops.

Implications for Early Detection and Treatment

This discovery could lead to innovative ways to identify individuals at risk for depression. Since the salience network can be detected early, even in children who are yet to develop depressive symptoms, this could transform preventative care. Furthermore, interventions targeting this specific network, such as neuromodulation techniques or personalised therapies, could become a future treatment path.

A Step Towards Precision Medicine in Mental Health

The research is still in its early stages, but experts believe that understanding the mechanisms driving salience network expansion could pave the way for new pharmaceutical and therapeutic interventions. By focusing on how this network contributes to depression, scientists hope to tailor treatments more effectively, improving patient outcomes.

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Did Pollen Allergies Lead to Woolly Mammoth Extinction?

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September 27, 2024

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Did Pollen Allergies Lead to Woolly Mammoth Extinction?

Woolly mammoths have long been thought to have disappeared due to a combination of factors, such as climate change and human activity. However, a recent study proposes an unexpected hypothesis: pollen allergies may have played a role in their extinction. The study suggests that at the end of the last Ice Age, a surge in vegetation led to excessive pollen production. This may have triggered allergic reactions in mammoths, impacting their sense of smell. Since mammoths relied heavily on smell for various vital functions, such as finding food, evading predators, and locating mates, pollen-related allergies could have severely disrupted these abilities.

Could Allergies Explain Extinction?

Researchers argue that this impairment during mating season may have made it difficult for mammoths to communicate and breed, contributing to a sharp population decline. However, further testing, including examining fossilized mammoth remains for immune proteins associated with allergic responses, is needed to confirm this theory.

Scepticism Around the Hypothesis

While the study presents a compelling narrative, not all experts are convinced. Evolutionary biologist Vincent Lynch, for example, points out that mammoth extinction is more likely to have been caused by a combination of environmental shifts and human hunting. Until more concrete evidence emerges, the pollen allergy theory remains an intriguing but debated topic in mammoth research.

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