Science and Technology, This section contains topics focusing on science and technology,. Aspirants for competitive exams such as UPSC Civil Services, PSC and other competitive exams will surely get benefits from these short, rich and comprehensive notes. The notes prepared here, are crafted from articles published in various prestigious Newspapers by famous writers, thinkers, politicians, bureaucrats, and public figures.

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Extra Bytes: Why lightning still kills so many Indians?

Why lightning still kills so many IndiansApprox Read Time: 5 min In News: Why lightning still kills so many Indians As per a report published recently, lightning strikes have caused 1,771 deaths in India from April, 2019 to March, 2020. News Summary: Why lightning still kills so many Indians A report on lightning in India in 2019-2020 was prepared by Climate Resilient Observing Systems Promotion Council (CROPC), a non-profit organization.To prepare…


Renewed interest in Proxima Centauri, the closest star to the Sun

Proxima Centauri - "Breakthrough Listen Project"Approx Read Time: 4 min In News: Astronomers with the "Breakthrough Listen Project" are investigating a mysterious radio wave signal from the direction of Proxima Centauri, the closest star to Earth’s Sun.The signal named Breakthrough Listen Candidate 1 or BLC-1 was detected in April, 2019, by the Parkes radio telescope at Parkes Observatory in Australia. The signal has not been spotted again.Scientists are currently working on a paper explaining BLC1,…


What is Winter Solstice, which made December 21st the shortest day of the year?

What is Winter Solstice?Approx Read Time: 4 min In News: December 21st is the day of Winter Solstice in the northern hemisphere, and it is the shortest day (day with the shortest day-time) of the year.This year, the day-time of December 21st in Delhi was approximately 10 hours 19 minutes long. About: Winter and Summer Solstices The winter solstice, hiemal solstice or hibernal solstice occurs when one of the Earth's poles has…


Jupiter and Saturn will meet again — but the Great Conjunction is still on

The Great Conjunction between Jupiter and SaturnApprox Read Time: 3 min In News: For the last several days, a rare cosmic event is taking place - the Great Conjunction between Jupiter and Saturn.During this event, Jupiter and Saturn appear to merge in the night sky.The planets appeared closest to each other on the night of December 21. About: Great Conjunction Astronomers use the word conjunction to describe pairing of planets and other objects in the…


Shigella: The intestinal infection is not deadly in most cases

Shigella InfectionApprox Read Time: 2 min Shigella Infection In News: Health officials in Kozhikode district of Kerala recently conducted emergency meetings after six cases of shigella infection and nearly two dozen suspected cases were detected.The first suspected case of the infection was a 11-year-old child, whose condition worsened resulting in his death. About: Shigella infection Shigellosis, or shigella infection, is a contagious intestinal infection caused by a bacteria known as shigella.The bacteria, after entering the body…


Concern over new strain, India stops UK flights until Dec 31

Mutation in SARS Cov2Approx Read Time: 3 min Mutation in SARS Cov2 In News: India has suspended all flights to and from the UK until December 31, due to concerns of a new variant of SARS-CoV-2, that is spreading & growing rapidly in UK.Several other countries, too, have suspended UK flights and imposed travel restrictions.Covid-19 case rates have almost doubled in London over the past week, with almost 60% of these infections due…


Japan’s Hayabusa2 delivers rock samples from asteroid Ryugu

Hayabusa2 mission on asteroid RyuguApprox Read Time: 5 min In News: A capsule (which was on Japan’s Hayabusa2 mission) containing samples from asteroid Ryugu has landed safely back to Earth.Ryugu in Japanese means “Dragon Palace,” the name of a sea-bottom castle in a Japanese folk tale. News Summary: For the past six years, it has conducted a remarkable 5.2bn km mission to extract the first-ever sub-surface samples from the asteroid Ryugu.In…


India successfully launches earth observation satellite EOS-01

EOS-01 (RISAT)Approx Read Time: 3 min In News: India has successfully launched its latest Earth Observation Satellite EOS-01 and nine customer satellites.EOS-01 is a Radar Imaging Satellite (RISAT). News Summary: India has successfully launched its latest earth observation satellite EOS-01 and nine customer satellites.The Polar Satellite Launch Vehicle (PSLV-C49) lifted off from the Satish Dhawan Space Centre in Sriharikota. For the PSLV, this was the 51st flight and only two of its launches have…