Chorus waves can be converted to sound. The ones around Earth sound like singing or chirping birds. Jupiter has stronger chorus waves, and now its large moon – Ganymede – has been found to have chorus waves a million times stronger than Jupiter’s.
Viewed under a microscope, it resembles a human hair. But this is actually an extremely precious speck of dust – a tiny sample from the Itokawa asteroid, brought back to Earth by Japan’s Hayabusa mission.
Asteroid on a collision course with Earth? These astronomers will likely see it first. NASA’s Center for Near-Earth Object Studies – now entering its 3rd decade – makes over 90 percent of near-Earth asteroid and comet discoveries. Here’s how and why they do their work.
At first glance, it’s just a square filled with tiny grains of static. But incredible as it is to imagine, every single point of light in this image is actually a distant galaxy, as observed by ESA’s Herschel Space Observatory.