New evidence has supported belief that the building blocks of DNA were brought to Earth by meteorites.
The existence of DNA in meteorites has been acknowledged since the 1960s, but it was debated whether the DNA developed here on Earth or in space.
The research shows evidence of nucleobases, essential in the formation of DNA and RNA, were carried in a meteorite known as carbonaceous chondrite.
Thirteen meteorites, 12 varied carbonaceous chondrite and one ureilite, were analysed in the research.
Read more at Proceedings of the National Academy of Sciences of the United States of America