Image credit: composite of 25 images of the sun, showing solar outburst/activity over a 365 day period; NASA / Solar Dynamics Observatory / Atmospheric Imaging Assembly / S. Wiessinger; post-processing by E. Siegel. The Power of the Sun’s Engines By Dr. Ethan Siegel Here on Earth, the sun provides us with the vast …
Category: Kids Stuff
Mar 13
Old Tool, New Use: GPS and the Terrestrial Reference Frame
Artist’s interpretation of the Jason 2 satellite. To do its job properly, satellites like Jason 2 require as accurate a terrestrial reference frame as possible. Image courtesy: NASA/JPL-Caltech. By Alex H. Kasprak Flying over 1300 kilometers above Earth, the Jason 2 satellite knows its distance from the ocean down to a matter of …
Feb 14
A Two-Toned Wonder from the Saturnian Outskirts
Images credit: Saturn & the Phoebe Ring (middle) – NASA / JPL-Caltech / Keck; Iapetus (top left) – NASA / JPL / Space Science Institute / Cassini Imaging Team; Phoebe (bottom right) – NASA / ESA / JPL / Space Science Institute / Cassini Imaging Team. By Dr. Ethan Siegel Although Saturn has been known …
