Random squeey post!
Squee number one: Dumusque et al. (2012) found a probably earth-sized planet literally next door to the solar system. The newly announced rockball orbits α Centauri B, one of the three(?)* stars making up the star system closest to the sun. Alas, it’s unlikely to harbour life of any kind given its very close orbit – it goes around a star not much cooler than our sun in slightly over 3 days. However, the authors point out that small planets are most likely to be found in multiplanet systems, and given the difficulty of finding this one, the star may well have even harder to detect, more distant companions. I think this is a nice reminder of how much more we need to learn about other solar systems – this little guy has been circling there, a mere four point something light years from us, and we only found it now. Keep it up, planet hunters, you’re doing amazing stuff!
Reference: Dumusque X et al. (2012) An Earth-mass planet orbiting α Centauri B. Nature advance online publication available online 17/10/2012, doi: 10.1038/nature11572
*I’ll let the real astronomers argue whether Proxima Centauri is part of the α Centauri system…
Squee number two: I totally must read this book. It’s the ultimate evo-devo book: it’s about fossilised development, basically. It seems overwhelmingly vertebrate-centred based on the review in Developmental Dynamics, but hey, there is an invertebrate chapter and I take what I can get 😀
And wow, it’s not even that expensive as far as university-published hardcover sciencey books go! Hmm. Shall we give in to temptation right now or save it for a Christmas present?