Crescent Mimas


Crescent Mimas

Death Star MimasCassini has seen back this crescent view of Saturn’s moon Mimas, the long shadows showing off its many craters, indicators of the moon’s violent history. The most famous evidence of a collision on Mimas (just under 400 km across) is the crater Herschel that gives Mimas its Death-Star-like appearance.

Image Credits: NASA

Solar Flare


An active region on the Sun almost directly aimed at Earth erupted with an X 1.6 flare (the most powerful class) on 10 September, 2014. There was a coronal mass ejection associated with the event. The flare lasted longer than usual and sent out a burst of radiation into space. The time-laps movie below shows the bright flare and the ensuing coils of magnetic loops flickering over a period of roughly five hours. The images used to create the movie were taken in a wavelength of extreme ultraviolet light by the Solar Dynamics Observatory.

Video Credit: NASA.