GRACE mission

Context: NASA’s GRACE mission has confirmed that a massive redistribution of freshwater is occurring across the Earth, with middle-latitude belts drying and the tropics and higher latitudes gaining water supplies. Cause and Concern: A combination of the effects of climate change, vast human withdrawals of groundwater and simple natural changes Read More …

“AYUSH” finds a place in English Language

Context: The Commission for Scientific and Technical Terminology has decided to adopt the word ‘AYUSH’ in Hindi and English languages for scientific and technical purposes. The “AYUSH” became popular as the acronym for five traditional and complementary systems of medicine, namely Ayurveda, Yoga & Naturopathy, Unani, Siddha and Homoeopathy and Read More …

ISRO making green propellant

Context: Scientists at the Indian Space Research Organisation (ISRO) have reported progress in the development of an environment-friendly propellant to power satellites and spacecraft. Conventional Hydrazine Rocket Fuel: The effort is to replace the conventional hydrazine rocket fuel, a highly toxic and carcinogenic chemical, with a greener propellant for future missions. Read More …

ISRO’s clock to prop up India’s own GPS

Context: Time is running out for the seven-satellite Indian Regional Navigation Satellite System (IRNSS), also known as NavIC (Navigation in Indian Constellation). NavIC, whose seventh satellite was launched in April 2016, was expected to provide India a satellite-based navigation system independent of the U.S.-controlled GPS (Global Positioning System). But India’s Read More …

How will in-flight WiFi work?

The Telecom Commission allowed in-flight connectivity of Internet and mobile communications on aircraft in Indian airspace. Once all legislative modalities are in place over the next 3-4 months, telecom operators, airlines, and other technological partners will be able to tie up to roll out these services. What is the technology Read More …

GammaRay Astronomy PeV EnergieS phase-3

GRAPES-3 (GammaRay Astronomy PeV EnergieS phase-3) experiment is designed to study cosmic rays with an array of air shower detectors and a large area muon detector. It aims to probe acceleration of cosmic rays. The objectives are to study: The origin, acceleration and propagation of >1014eV cosmic rays in the galaxy and beyond. Existence Read More …

Iron Fertilization

Iron fertilization is the intentional introduction of iron fines to iron-poor areas of the ocean surface to stimulate phytoplankton production. This is intended to enhance biological productivity and/or accelerate carbon dioxide (CO2) sequestration from the atmosphere. Fertilization occurs naturally when upwellings bring nutrient-rich water to the surface, as occurs when Read More …