Study of meteorite isotope ratios suggests Earth’s water was delivered by express asteroid rather than comets
Researchers examining hydrogen isotope ratios in meteorites appear to have thrown a spanner in the works of the latest models of how elements such as hydrogen and nitrogen reached the early Earth. The finding throws up questions about where all the Earth’s water came from and how life on Earth began.
You need to sign in or choose one of these options
£36 annual | Pay monthly | Pass
Subscribers get unlimited access to Chemistry World. No more paywalls. Plus your subscription will help fund the charitable work of the Royal Society of Chemistry, supporting chemists worldwide.
Free
You'll be able to read more articles each month before you see another paywall. Perfect if you're a light user or want to read more before deciding to subscribe. It takes less than a minute and it's completely free.
Included as a benefit
Members of the Royal Society of Chemistry have unlimited access to Chemistry World as a benefit of membership. Just sign in with your usual membership credentials. Not a member? Find out how to join.