Hey space lovers! I’ve recently signed up to be a member of The Planetary Society and if you should too if you aren’t already. Not only do you get an excellent t-shirt (see below) and a quarterly issue of The Planetary Report magazine, you are funding space advocacy and adding your name to an important body that will promote space exploration.
Have you ever wondered why comet 67P looks the way it does? It’s a strange shape and looks a little like 2 bodies that have been fused together, but to the researcher’s surprise, the cometary activity appears to originate in the neck. Why? Rapid temperature change in the neck, causing cracks and inducing volatile loss. Check out Emily Lakdawalla’s blog entry for the full spiel!