The Intense Invisible Aurora

Jupiter has aurora.  It’s not surprising since it has a very powerful magnetic field.  It’s only natural that the two largest structures in the solar system, the Sun’s solar wind influence (called the heliosphere)  and Jupiter’s magnetosphere, should be constantly battling. But don’t expect to see Jupiter’s aurora through a backyard telescope.  The result of this battle is far more energetic, producing an aurora invisible to the human eye, one made of X-rays. The Sun constantly blasts charged particles off into space in all directions, assaulting the planets, moons, and other solar system bodies.  It is this blast of solar wind that gives...

Take a Ride on New Horizons as You Fly Past Pluto

The rendering I’ve been waiting for is finally here! A conceptual video of the flyby of Pluto from far away, leading through closest approach and turning back to see the dark side, all together.  This will give you a sense of the motion of New Horizons, and the state of the Pluto system in the Kuiper Belt. The credit goes not just to NASA, but to space enthusiast Björn Jónsson, who created the rendering from the latest Pluto images and data from New Horizons. The strangest part of watching this was the sense of longing I felt as we fly past...