If the Moon Were Only 1 Pixel is a tediously accurate model of the Solar System that Josh Worth made to explain to his daughter just how difficult it is to go on holiday to Mars.
What lives where in the Solar System. Fantastic Adventure covers from 1939/40 depicting the kind of lifeforms they think each planet can support. [more inside]
The United Stated Geological Survey has finished a six-year effort to map the surface of Jupiter's moon Io. [more inside]
NASA's MESSENGER team (previously: 1, 2, 3), with help from the U.S. Geological Survey, released yesterday the first global map of the planet Mercury. [more inside]
Tvashtar in Motion. Awesome five-frame GIF of fountaining sulfuric lava on Io courtesy New Horizons as it swung by Jupiter earlier this year. Found via Planetary Society Blog (Thank you, Emily). More on Tvashtar.
Space volcano. The New Horizons space probe, en route to Pluto and the Kuiper Belt, captures an amazing image of the Tvashtar volcano on Jupiter's moon Io.