Jupiter-sized "planets" free-floating in space

priyade

Well-known member
  • Dec 2, 2017
    10,378
    6,042
    113
    Jupiter-sized "planets" free-floating in space, unconnected to any star, have been spotted by the James Webb Space Telescope (JWST).
    What's intriguing about the discovery is that these objects appear to be moving in pairs. Astronomers are currently struggling to explain them.
    The telescope observed about 40 pairs in a fabulously detailed new survey of the famous Orion Nebula.
    They've been nicknamed Jupiter Mass Binary Objects, or "JuMBOs" for short.

    Gas physics suggests you shouldn't be able to make objects with the mass of Jupiter on their own, and we know single planets can get kicked out from star systems. But how do you kick out pairs of these things together? Right now, we don't have an answer. It's one for the theoreticians," the European Space Agency's (Esa) senior science adviser told BBC News.
    ------ Post added on Oct 3, 2023 at 4:15 AM
     

    imhotep

    Well-known member
  • Mar 29, 2017
    14,824
    8
    35,333
    113
    Just note. These were first discovered in the 1990's but possibly not in pairs. These were called FFP (Free Floating Planets) or just Rogue Planets. It was said that there could be more FFPs than stars.

    The first Free Floating Double Planet system was discovered in 2017 - each approx 3.7 Jupiter masses.