Astronomers may have found the first moon beyond the Solar System

Using ESO's Very Large Telescope, astronomers found evidence of a Jupiter-mass object orbiting a brown dwarf in the CD-35 2722 system. If confirmed, it would be the first natural satellite detected outside our Solar System. The study was published in Nature.

• The candidate is at least as massive as Jupiter, far heavier than any Solar System moon
• Its brown dwarf host is more than 30 times Jupiter's mass
• The radial velocity method detected wobbles in the brown dwarf's motion
• The star CD-35 2722 has roughly half the Sun's mass