A consortium of astronomers from across the world, including from India, have detected the signature for the background hum of the universe. Called the gravitational wave background (GWB), these are ripples in the fabric of spacetime pervading all of the space around us. The Global collaboration of radio astronomers called the International Pulsar Timing Array (IPTA) made the announcement of the detection on June 29, 2023.
An IIT Bombay study using satellite data shows rising greenhouse gas levels over Delhi and Mumbai and also identifies emission hotspots in these cities.