Herschel Crater


Herschel Crater is 130 km wide, covering a large portion of Saturn’s moon Mimas. The moon itself is only 396 km wide.

The dayside terrain seen here is on leading hemisphere of Mimas. North on Mimas is up and rotated 1 degree to the left in this image which was taken in visible light by the Cassini spacecraft in 2010.

Image Credit: NASA

Moar Science from Cassini


As the Cassini spacecraft was running out of fuel for the thrusters used to maintain control of its attitude so that it could point it instruments at the desired targets and its antenna toward Earth so send back data, it was placed in a series of Grand Finale orbits that took it between Saturn’s rings and the planet’s upper atmosphere. Eventually, an orbit was low enough that the spacecraft burned up in the upper atmosphere. It will take years to go through all the data, but papers are beginning to be published with findings from the Grand Finale. Interesting findings include an electric current that flows between the rings and the upper atmosphere and organic compounds falling as “rain” from the rings. There’s more interesting stuff here. Go take a look.

Image Credit: NASA