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Stories, updates, insights, and original analysis from The Planetary Society.

Asteroids and comets to scale, including Hartley 2

Just in time for today's Deep Impact press briefing, which you can watch on NASA TV in a few minutes: I've updated my montage of all the asteroids and comets that have been visited and photographed to include Hartley 2.

The Stardust Sample Catalog

It never ceases to amaze me how much science is being wrung out of the few grams of material that were returned to Earth by the Stardust mission.