Tue, 17 March 2015
The Dawn probe arrives at dwarf planet Ceres, and finds mysterious bright spots.
An ecological study has found that large predators - lions, wolves, hyenas etc - regulate their population numbers, mainly through infanticide or social limitations on breeding.
And we talk about #TheDress, and some explanations as to why people see it differently.
Chemical engineers and astronomers at Cornell University suggest that Titan, Saturn's largest moon, could harbour life - but not as we know it.