NASA’s Kepler space telescope has received signal of what could potentially be the first discovered “exomoon,” a moon orbiting a planet beyond our solar system. Astronomers believe the candidate moon, which lies some 4000 light-years from Earth, is about the size and mass of Neptune, and is orbiting a planet the size of Jupiter but with 10 times the mass. Further observations of the exomoon using the Hubble Space Telescope will take place in October.
Click here for free access to our latest coronavirus/COVID-19 research, commentary, and news.
Support nonprofit science journalism
Science’s extensive COVID-19 coverage is free to all readers. To support our nonprofit science journalism, please make a tax-deductible gift today.