The significance of a new finding is that it is compelling evidence of life elsewhere, even if it doesn’t prove life on Earth originated elsewhere.
Apart from helming the International Astronomical Union, Bappu is also the only Indian so far to have a comet and an asteroid named after him.
An international team of astronomers has made the most detailed image of the ring of dusty debris surrounding a young star and found that the ice content of colliding comets within it is similar to comets in our own solar system.
The asteroid chunk was nearly 15 km in diameter and hit Earth at faster than 20 km per second – imagine a Mt-Everest-sized rock slamming down from space at Mach 58.
The final decision to turn comms off was based on figuring out how much power Rosetta would need to keep attempting communications with Philae.
The results are a first step in establishing the properties of comet clouds around Sun-like stars just after the time of their birth.
The latest finding adds to a growing body of evidence that the building blocks of life are common throughout the universe