UPSC NOTES & CURRENT AFFAIRS

2023-04-05 18:48:43 ■ SNAP-10A

◇ Context: Launched on April 3, 1965, SNAP-10A was the world’s first operational nuclear reactor in space. While it still remains in orbit, it was operational for just 43 days.

□ About nuclear reactors:

◇ A class of devices that contain and control sustained nuclear chain reactions, these systems are at the heart of any nuclear power plant.

□ Nuclear Reactor in Earth orbit:

◇ The U.S.’ first and only known space nuclear reactor, the SNAP-10A was the result of the government-sponsored System for Nuclear Auxiliary Power (SNAP) programme, also known as SNAPSHOT for Space Nuclear Auxiliary Power Shot.

◇ The SNAP reactors had liquid sodium-potassium alloy as the coolant. A thermoelectric enriched uranium fuel with zirconium hydride as a moderator converter was used to directly convert heat from the reactor into electricity.

◇ Russia has sent quite a few of them, including one that crashed and scattered radioactive debris over Canada in 1978. Open / Comment

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2023-04-04 17:43:20 ■ FERNARIUM

◇ Context: Eravikulam National Park (ENP), the natural habitat of Nilgiri tahr in Munnar, has a new attraction — a Fernarium set up inside the park.

□ Fernarium:

◇ A fernarium is a type of botanical garden or greenhouse that specializes in cultivating and displaying various species of ferns.

◇ Ferns are part of the Epiphytic family. They grow naturally in a soilless condition. The plants obtain water and nutrients through leaching from trees.

◇ Ferns are a diverse group of plants that do not produce flowers or seeds but instead reproduce through spores. Open / Comment

2023-04-04 16:43:30 Download App for Demo Classes, Test & Course Purchase: https://play.google.com/store/apps/details?id=co.haward.psifc

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