NEW DISCOVERIES IN ASTRONOMY

Remember that first volcano plume that we spotted on Io eighteen years ago? Everybody expected it to subside after a time, the way Earth volcanoes do. Well, all this time later it's still raging, strong as ever. Maybe that's an indication that there's no plate tectonics on Io, nothing solid to slide over the hemorrhaging wound and plug it up.

Maybe that shouldn't surprise anybody...after all, the red spot (above) on Jupiter's been there at least since Galileo's time, and that's volcanic in origin, isn't it? Actually it probably isn't. There's no solid surface on Jupiter til the we get to the core, and the core shouldn't have any liquid inside. The red spot's still a mystery.

This amazing photo (above) is of a dwarf star which has just exploded.

 The black mice above are extremely dense clouds which will eventually condense into stars. They're flat and bleeding material into space in a single direction, a sign that some kind of force is condensing them.

Above, the exact South Pole of the Moon. The good news is that this small region would make a good site for a moon base since it's always bathed in sunlight and is believed to be more likely to contain frozen water than other areas. The bad news is that the surface looks like it's taken a very high number of impacts. Is it safe to build anything there?

Until recently there was no way to test Einstein's prediction that a rotating mass will produce magnetism. Now a space experiment has confirmed it. The effect is subtle, but unmistakable. Wow! How often do we discover basic physical laws like this?