albedo

The dark comet rises

Ever since early August, when Rosetta rendezvoused with Comet 67P/Churyumov-Gerasimenko at a distance of roughly 100 km, the on-board navigation camera (NAVCAM) has been returning images that depict the many different facets of its nucleus….


A winter wondermars

Our own Sinterklaas has left town and now it’s time for Santa Claus and a winter wonderland. On Mars, ESA’s Mars Express spotted such a winter wonderland already, cratered and all. It’s called Charitum Montes….