Science & Technology Current Affairs - 2020

Science & Technology Current Affairs 2019-2020 category comprises current affairs with all important national / international updates in science and tech and events for the year 2019-2020 for UPSC, States, Civil services, SSC and other competitive examinations of India and States.

Category Wise PDF Compilations available at This Link

DRDO displays A-SAT weapon system at Republic Day Parade

On January 26, 2020, the Defence Research Development Organization (DRDO) displayed the A-SAT weapon system. A-SAT is the Anti-Satellite Weapon System. India is one of the few countries in the world to own the technology. The other countries include US, China and Russia.


DRDO launched “Mission Shakti”, the first A-SAT mission. The mission demonstrated anti-satellite technology. The mission destroyed a live orbiting satellite at the Low Earth Orbit. The mission used a missile at a speed of 11 km per second to destroy the satellite.

The technology used in the A-SAT mission was named by India as “hit to kill” technology. The covert technology was developed by India. It enables to destroy enemy satellite with 10-centi metre accuracy.

International Treaty

India is a signatory of the international treaty on space, the 1967 Outer Space Treaty. According to the treaty, mass destruction of weapons in outer space are alone prohibited.

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Indian Railway’s first Waste to Energy Plant uses “PolyCrack” Technology

The East Coast Railways commissioned the first waste-to-energy plant of Railways sector of India. It is the fourth such plant in the country. The plant has been set up at a cost of Rs 1.79 crores with Polycrack technology.


The plant installed converts waste collected from the garbage disposal units into carbon powder, diesel and gas using Polycrack Technology. The diesel oil is to be sold by the Railways to other stake holders for commercial purposes. The gas and carbon powder are to be used in brick manufacturing. The best thing of the plant is that it does not leave any waste at the end.

The plant has the capacity to process 500 kg of waste per day and will earn Rs 17.5 lakh per annum.

The first of such plant was established by Infosys in 2011 at Bengaluru. The second plant was established in Delhi in 2014 and the third was installed by Hindalco in 2019.

Polycrack Technology

In Polycrack Technology, waste is processed and reformed in 24 hours. The only drawback is that it requires larger area. The technology involves de-polmerization, cracking, reforming, scrubbing, particle filtration and rapid quenching.

The major benefit of the method is that it does not require pre-segregation.

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