Careful eyes on deadly skies

On the Smithsonian website, there’s an interview with an asteroid hunter, who surveys the sky looking for deadly moving blobs among all the static nice blobs recorded by his telescope.

Meanwhile a size comparison chart has been put up at the Planetary Society blog comparing the asteroid Lutetia, recently visited by Rosetta, with other asteroids and comets seen by probes as well as the two larger objects, Vesta and Ceres, to which probes will be headed. The basic message is the previous thirteen or so objects are pebbles compared to Lutetia, but Lutetia is itself an irrelevant speck compared to Vesta and the larger Ceres.


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