Jupiter's Satellites
Jupiter's Satellites is a scholarly work, published in 1938 in ''Nature''. The main subjects of the publication include Jupiter, astronomy, physics, geodesy, Jupiter mass, artificial satellite, astrobiology, orbit, and formation and evolution of the Solar System. From the figures it is conjectured that the body cannot be less than 10 million miles from Jupiter, and so it certainly lies outside VII, but there is nothing at present to show that it does not lie outside IX.