Topic: Max Planck Institute for Solar System Research
The recent solar flares provide a dramatic backdrop for a study that shows Mars gets far more of its atmosphere stripped away by solar storms than does Earth. Thank you, magnetosphere.
The composition of comet Hartley 2 suggests that comets might have been a bigger source of Earth's water than previously thought. It's also challenging models of solar system formation.
Asteroid Vesta has been coming into focus as NASA's Dawn probe comes in for close-up photos, but a mysterious dark spot has scientists scratching their heads.
Asteroid collision: The Hubble Space Telescope has spotted an odd X shape in our solar system's asteroid belt, in what could be the first image of an asteroid collision in space.