Jupiter’s Magnetic Field

This animation illustrates Jupiter’s magnetic field at a single moment in time. The Great Blue Spot, an-invisible-to-the-eye concentration of magnetic field near the equator, stands out as a particularly strong feature. The gray lines (called field lines) show the field’s direction in space, and the depth of the color on the planet’s surface corresponds to the strength of the magnetic field. Dark red and dark blue correspond to strong positive and strong negative fields, respectively).

Video Credit: NASA


Jupiter has (at last count) 79 moons. The four Galilean moons make up over 99.9% of the mass of all of the planet’s satellites. The next largest moon Amalthea was discovered in 1892. It’s irregularly shaped, 250 × 146 × 128 km, and not much was know about until the Voyager 1 and 2 flyby of Jupiter in 1979 and the Gailieo order mission which did a close pass by the moon in 2002.

Image Credit: NASA

So Long And Thanks For All The Fish

This sequence of images was taken on 29 October as the Juno spacecraft performed its 16th close flyby of Jupiter. Juno was between 18,400 and 51,000 km the planet’s cloud tops. A cloud in the shape of a dolphin appears to be swimming through the cloud bands along the South South Temperate Belt.

Image Credits: NASA / JPL-Caltech /SwRI / MSSS / Brian Swift / Seán Doran

Arthur Dent was unavailable for comment.