More Than a Trillion Planets Could Exist Beyond Our Galaxy
University of Oklahoma researchers used NASA’s Chandra X-ray observatory and were even able to see a quasar – a large celestial object – up to six billion light years away.
Xinyu Dai, professor in the Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma College of Arts and Sciences, said: "We are very excited about this discovery. This is the first time anyone has discovered planets outside our galaxy.
"These small planets are the best candidate for the signature we observed in this study using the microlensing technique.
“We analysed the high frequency of the signature by modelling the data to determine the mass.”
