NASA Visualizes Massive Radio Wave Output Of Hercules A GalaxyGalaxies are a lot like people -- some are notable for their shape, or their age, or their brightness, but others you can only notice how very, very loud they are. These radio galaxies emit vast quantities of energy on radio wavelengths, and Hercules A is among the loudest we know of, with the supermassive black hole at it's center putting out about a billion times more energy along radio wavelengths than the Sun. Now, courtesy of a collaboration between the Hubble Space Telescope and the Very Large Array (VLA) radio telescope, we can visualize what all that energy would look like and, well, it's pretty serious stuff. For a look at how the visualization took shape, you can check out the video below.Read on...
Shaded Moon Map Shows Tons of Titanium Deposits
It's been a long time since any one has been to the moon, but we're still learning valuable information about it for use if and when someone does go back. For instance, Mark Robinson and Brett Denevi (from Arizona State University and John Hopkins University, respectively) have found, by cleverly shading some pictures from the Lunar Reconnaissance Orbiter, that the moon has a whole bunch of titanium deposits.
The Orbiter's camera images the surface at seven different wavelengths, and if you know what material absorbs what kind of light in what ways, you can get a pretty good idea of what kind of materials are on the lunar surface. It turns out there's a lot more titanium than anyone previously thought.Read on...