Don't show me this message again✕ Uranus is the seventh planet from the sun (Lawrence Sromovsky, University of Wisconsin-Madison/WW Keck Observatory) Astronomers have detected X-rays from Uranus for the first time, in findings that could help them learn more about the seventh planet from the sun. In a study published by the Journal of Geophysical Research on Wednesday, scientists from the UK, France, America and China said they had detected X-rays emitted by the planet thanks to visuals taken by NASA’s Chandra X-ray Observatory, a space telescope. They studied observations taken in 2002 and 2017 by the Chandra observatory, detecting X-rays in the first observation and a flare of X-rays in those taken 15 years later, NASA said.