Archive for the Mars Category
Awesome Mars Express view of Phobos and Deimos together – The Planetary Society Blog | The Planetary SocietyPosted in astro blogs, astronomy eduction, IYA, Mars, NASA, observing, Planetary Society, robotic astronomy, space, Student Astronomy with tags bellaire-astro, Deimos, Phobos, Planetary Society on December 13, 2009 by bellaireastro
The Bad Astronomy blog has a post up about the HiRISE imaging of Deimos with a cool new image of the smaller Martian moon.
Deimos is the smaller of the two moons, a lumpy ball 15 x 12 x 10 km in size (Phobos is 27 x 22 x 18). Deimos has incredibly weak gravity; its escape velocity is only about 20 km/hr, so you could throw a baseball right off into space, and biking without taking an unintentional EVA would be difficult.