"Chandrayaan-3 mission should succeed in all respects...," says ex-ISRO Chairman Madhavan Nair
Bengaluru (PTI): Veteran space scientist G Madhavan Nair said on Thursday the Chandrayaan-3 mission to the moon should succeed in all respects so that India can cross a major milestone in space exploration, and described the planned soft landing on the lunar surface as a very difficult and complex maneuver.
Speaking to PTI, the former Chairman of the Indian Space Research Organisation, said the mission is an important milestone for ISRO, and noted that the national space agency had made a number of simulations and strengthened the systems to resolve the problem faced during Chandrayaan-2 lander's soft- landing, which was unsuccessful, nearly four years ago.
"This moment I can only say that this mission should succeed in all respects so that we will cross a major milestone in space exploration", said Nair, under whose six year tenure as ISRO Chairman and Secretary in the Department of Space from 2003, as many as 25 successful missions were accomplished.
On the soft-landing which the ISRO planned to attempt on August 23 or 24, he said "It's a very difficult maneuver, very very complex maneuver and we are doing it for the first time in an unknown territory and to that extent there is lot of anxiety, we have to wait and see."
Nair also had a word of caution ahead of the launch of the Chandrayaan-3 mission on Friday.
"Normally nothing should go wrong. In this game, we can't say. It's a big event with so many sub-systems and components working in unison. Even if a minor glitch happens anywhere we can get into a problem, we really have to be cautious," he said.
"Right now, pre-launch preparations are going on. I hope they will look at all aspects carefully and don't brush aside any anomaly if at all they come across."
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China tests new Hydrogen bomb without nuclear fusion
Beijing: China has reportedly tested a new kind of explosive device that uses hydrogen but does not involve any nuclear materials. This new weapon was developed by the China State Shipbuilding Corporation (CSSC). It works differently from traditional hydrogen bombs, which rely on nuclear fusion. Instead, this device uses a chemical reaction with a substance called magnesium hydride. The explosion creates a powerful fireball that gives off extreme heat for a longer time, reported Economic Times.
The explosive weighs only 2 kilograms and uses a unique method to create a powerful blast. Magnesium hydride, which stores hydrogen at high densities, breaks down quickly when triggered by a normal explosive. This releases hydrogen gas, which then mixes with air and catches fire. The result is a fireball with temperatures above 1,000°C much hotter than regular explosives like TNT.
Quoting Wang Xuefeng, a top scientist at the China State Shipbuilding Corporation (CSSC), The Economic Times reported that hydrogen explosions require very little energy to ignite and can spread rapidly. Wang explained that such fires possess the intensity to burn through strong materials, including aluminium alloys. Due to its precision and destructive power, the device could be highly effective in targeted military strikes.
During a field test, the explosive showed a peak pressure of 428.43 kilopascals at a distance of two meters. This is around 40% of the pressure made by TNT. But the real strength of this device lies in the heat it produces. While most explosives create a quick shockwave, this one keeps burning at very high temperatures for more than two seconds.
This long-lasting heat could make the explosive useful for hitting specific military targets, such as power plants or communication centers. It could also be used to block enemy forces by burning roads or transport routes, making them unusable.
