How did life on Earth start? Did it emerge from the primordial ooze as is popularly believed, or did it land here from a comet or some other celestial body?
A new study in the journal Nature Chemistry provides strong evidence that the ingredients necessary to concoct the first life forms did indeed exist on earth. The scientists say that they used hydrogen sulfide, hydrogen cyanide and ultraviolet light—three basic elements that were available pre-life as we know it—to create the building blocks of compounds that eventually led to the genetic material that all life on earth holds in common, DNA.
The process also likely got some extraterrestrial help. They speculate that meteorites might have reacted with nitrogen in the atmosphere to create hydrogen cyanide, and that in water, that chemical could have interacted with both hydrogen sulfide and the sun’s UV light.
More Must-Reads From TIME
- The 100 Most Influential People of 2024
- The Revolution of Yulia Navalnaya
- 6 Compliments That Land Every Time
- What's the Deal With the Bitcoin Halving?
- If You're Dating Right Now , You're Brave: Column
- The AI That Could Heal a Divided Internet
- Fallout Is a Brilliant Model for the Future of Video Game Adaptations
- Want Weekly Recs on What to Watch, Read, and More? Sign Up for Worth Your Time
Contact us at letters@time.com