Science, Maths & Technology
Rosetta unexpectedly finds oxygen on comet 67P, surprising scientists
...data of another close encounter with a comet, Halley, almost 30 years ago. Glimpse into the birth of the solar system But at present, there is no reason to assume that the oxygen in 67P is a one-off observation. So what does the presence of free oxygen tell us about the conditions in the solar nebula or protoplanetary disk thought to have given birth to our solar system?...