SUBHAJIT DEY

Chemical incidents refer to accidental events involving the release, leakage, or improper handling of hazardous chemicals that can result in harm to people, the environment, and property. These incidents can occur in various settings, including industrial facilities, transportation systems, laboratories, and even residential areas. Chemical incidents can vary in scale from minor spills to large-scale disasters. Here are a few notable examples: Bhopal Gas Tragedy (1984) : One of the worst industrial disasters in history, a pesticide plant in Bhopal, India, released toxic methyl isocyanate gas, resulting in thousands of deaths and long-term health issues for survivors. Chornobyl Disaster (1986) : While primarily a nuclear incident, the explosion at the Chornobyl nuclear power plant released significant amounts of radioactive chemicals into the environment, causing widespread contamination and health issues. Fukushima Daiichi Disaster (2011) : Another nuclear incident, this time triggered

  As of my last knowledge update in September 2021, time travel as commonly depicted in science fiction remains theoretical and has not been achieved. While there are several theories in physics that allow for the possibility of time travel, such as concepts involving wormholes, closed timeline curves, and the theory of relativity, none of these ideas have been proven or successfully implemented. Wormholes, for instance, are hypothetical tunnels in spacetime that could potentially connect distant points, allowing for shortcuts between them. However, the existence and stability of wormholes are still unproven and face significant theoretical challenges. Closed timelike curves, which would theoretically allow someone to travel back in time, are also a topic of discussion in theoretical physics. However, they bring up paradoxes like the famous "grandfather paradox," where a person travels back in time and prevents their own grandparents from meeting, which would seemingly creat

  As of my last knowledge update in September 2021, there were several missions and landers that were either active, planned or had recently concluded on the Moon. However, I don't have real-time data and my information might be outdated. Here are a few missions that were either active or planned around that time: Change Missions (China): Chang'e 3: Landed on the Moon in 2013. Chang'e 4: Landed on the far side of the Moon in 2019. Chang'e 5: Successfully collected lunar samples and returned to Earth in 2020. Chang'e 6 (planned): Intended to bring back samples from the lunar south pole. Lunar Reconnaissance Orbiter (LRO) (NASA): Launched in 2009, LRO has been actively orbiting the Moon, collecting detailed information about its surface and environment. Artemis Program (NASA): This program aims to return humans to the Moon. Artemis I is an uncrewed test flight of the Space Launch System (SLS