Stunned scientists announced Wednesday the unexpected discovery of large quantities of oxygen on a comet which streaked past the Sun in August with a European spacecraft in tow.
The find came as a "big surprise", and challenges mainstream theories on the formation of our Solar System, said scientist Andre Bieler of the University of Michigan.
GMT 09:17 2017 Friday ,28 AprilBritish economic growth slows in first quarter
GMT 08:12 2017 Friday ,28 AprilEU's Tusk says UK must settle 'people, money and Ireland' first
GMT 08:10 2017 Friday ,28 AprilBarclays bank says profit down by more than half in Q1
GMT 08:07 2017 Friday ,28 AprilSony sees net profit more than tripling in current year
GMT 08:05 2017 Friday ,28 AprilRoyal Bank of Scotland rebounds into slender Q1 profit
GMT 08:03 2017 Friday ,28 AprilUBS says profits surged 79 percent in first quarter
GMT 08:01 2017 Friday ,28 AprilAfghan Taliban announce start of 'spring offensive'
GMT 07:53 2017 Friday ,28 AprilBritish counterterrorism police say they have uncovered plans for imminent operations