General Awareness

SCIENCE & TECHNOLOGY - October 2018

Oct 2018

Feb 24, 2022

DRDO Successfully Tests Quantum Key Distribution Tech between 2 Cities

A joint team of scientists from Defence Research and Development Organisation (DRDO) and the Indian Institute of Technology (IIT) Delhi, for the first time in the country successfully demonstrated Quantum Key Distribution link between Prayagraj and Vindhyachal in Uttar Pradesh, a distance of more than 100 km.
Quantum key distribution is a secure communication method which implements a cryptographic protocol involving components of quantum mechanics. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages.

SpaceX Launches 46 Starlink Satellites, Lands Falcon 9 Rocket for 100th Time

SpaceX launched nearly four dozen satellites and landed the returning rocket Monday (Feb. 21) on a mission that tied the company's booster-reuse record.
A two-stage Falcon 9 rocket topped with 46 of SpaceX's Starlink broadband spacecraft lifted off from Cape Canaveral Space Force Station in Florida.
After liftoff, the Falcon 9's first stage came back down to Earth for a vertical touchdown on SpaceX's droneship A Shortfall of Gravitas, which was stationed in the Atlantic Ocean a few hundred miles off the Florida coast. It was the 100th Falcon 9 rocket landing for SpaceX and the company's 107th landing overall.

Feb 23, 2022

Sun-Watching Space Observatories Spot Giant Solar Eruption

Astronomers using the ESA/NASA Solar Orbiter and the NASA/ESA Solar and Heliospheric Observatory (SOHO) spacecraft captured the largest solar prominence eruption ever observed in a single image together with the full solar disk.
Solar prominences are large structures of tangled magnetic field lines that keep dense concentrations of solar plasma suspended above the Sun's surface, sometimes taking the form of arching loops.
This latest solar prominence eruption occurred in February 2022, and extended millions of km into space.
The eruption was observed by the Full Sun Imager (FSI) of the Extreme Ultraviolet Imager (EUI) onboard the ESA/NASA Solar Orbiter.

Feb 22, 2022

Assam First State to Launch Mobile App for Navigation on Rivers at Night

The first night navigation mobile application in rivers in the country was launched for ferries plying on Brahmaputra River.
The inaugural night journey of an Inland Water Transport ferry fitted with the system sailed between Guwahati and North Guwahati and completed the return journey in about an hour.
Chief Minister Himanta Biswa Sarma ceremonially launched the system during the day. The night navigation mobile application was developed by the transport department in association with K. Raju, the principal scientist of IIT Madras and will survey the draft of the rivers.

Feb 20, 2022

Amit Shah Launches 'Shastra App' and 'Smart Card Arms License' of Delhi Police

Union Home Minister Amit Shah has launched the 'Smart Card Arms License' and 'Shastra App' of the Delhi Police, on the occasion of the 75th anniversary of the Delhi Police. In order to provide techno-friendly digital services to the citizens of the national capital. According to Delhi Police, the smart card, with inherent security features, is easy to carry and handle. The card will be printed in-house after verification of data of the arms license holders.
About the Smart Card Arms License:
The Delhi Police Licensing Unit has introduced 'Smart Card Arms License', to replace the existing bulky arms license booklet. With this Delhi Police has become the first police force in the country to introduce such a smart card service.
The Smart Card Arms License is easy to carry with inherent security features. It will be printed in the house after verification of data of arms license holders.
The card is also integrated with the 'e-Beat book' of Delhi Police through the 'Shastra mobile app' for effective policing.
The Shastra app will help beat officers in identifying the credentials of arms license holders anytime during day-to-day random checking.

Feb 19, 2022

Astronomers Find Widest-Separation Brown Dwarf Pair to Date

At an estimated distance of 130.5 light-years, CWISE J014611.20-050850.0AB has a projected separation of 129 AU (astronomical units), or 129 times the distance between the Sun and the Earth, making it the widest-separation brown dwarf pair found to date.
Brown dwarfs are cool, dim objects that have a size between that of a gas-giant planet and that of a Sun-like star.
Sometimes called failed stars, these objects are too small to sustain hydrogen fusion reactions at their cores, yet they have star-like attributes.
While stars are often found in binary systems, brown dwarf binaries are much rarer.

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