Nebulas have been known to have an abundance of hydrogen and oxygen, so I'm not entirely surprised by the findings in regards to our early sun (nor some of its surroundings).

Also, thank goodness for comets (those early travelers and ahead of whatever we are today, but... YES!!!):

[With cosmochemists suddenly caught between a rock and a hot place, they will likely turn to the outer solar system for more clues to the isotopic puzzle. It's possible that the European Space Agency's Rosetta spacecraft will determine the 17O/18O ratio of its target, Comet 67P/Churyumov-Gerasimenko, when it arrives in May 2014.]

Good news.