Long before Earth formed, tiny mineral grains were already drifting through space, forged in the final breaths of dying stars. Those grains, older than our planet by billions of years, now sit in ...

New Delhi: It took 4.5 billion years for a few grams of an ancient asteroid to reach a laboratory on Earth, and with it, chemical clues to our beginnings. Bennu, a relic from the solar system’s ...