The Earth, Moon and Comet 67/P showing how they would appear in the same light conditions (Not to correct size scale)

BOGOF? For asteroids? #rosetta #DuckComet

7 papers in the free special edition of Science magazine yesterday with results from the Rosetta mission. The duck-shaped comet 67P/Churyumov-Gerasimenko,is giving up its secrets one by one. And its biggest secret may be BOGOF.

Recall this great mission had a long journey to its target and then even landed on the surface of the asteroid.

These set of initial results present new light on many different topics.

First up, the type of water on the comet is not the same type of water we have on Earth. So while comets may still have brought water to Earth, this comet is not an example of one that could have done so.

Second, the comet is spitting out gas in very strange and complex manned. It is a weird comet, after all – it looks more like two comets stuck together, which leads is nicely onto the next finding – maybe it is 2 comets stuck together.It may well turn out that the two blobs of the comet are different material, so this may have started out as two bodies, coallesed into one. So, Buy One Get One Free

Finally, it density is similar to that in the insoles of your new shoes – that aerogel that gives you a nice smooth walk. This is much lighter than anticipated, so the scientific models will have to adapt.

More to come as the comet gets closer to the Sun over the next 8 months.