Science, Maths & Technology
Rosetta unexpectedly finds oxygen on comet 67P, surprising scientists
...free molecular oxygen that makes up 20% of our atmosphere for granted with every breath. So why is finding oxygen in a comet such a big deal? Oxygen readily binds with other abundant elements such as hydrogen (H) or carbon ( C ) to form water (H2O) or carbon dioxide (CO2). It takes some energy to split these molecules into their components again to produce free oxygen....