Trappist-1 and it’s 7 dwarves

Well squee! NASA announced that the little star TRAPPIST-1 has 7 rocky planets, ranging in size from 40% to 140% of Earth’s mass. They’re all very close to the star, closer than Mercury is to our own Sun, but TRAPPIST-1 is an ultracool dwarf star, with a surface temperature of perhaps 2,500 ºC. Our sun is about 5,500 ºC. This means that several of the planets are in the Goldilocks…

February 23, 2017

Plan K

Rainbow on the wy tot he Cumbre tunnel, BrenaAlta, La Palma
October 27, 2016

I spent quote a lot of time organising a visit for a large group (55!) of high school students. They’re Erasmus exchange students on an astronomy-related trip, some from Tenerife (the hosts) some from Poland, and some from Slovenia. The main point of their visit to La Palma was to see GTC, but they were going to be on La Palma all day, so what else could they see? So…


A Guide to the Roque de Los Muchachos Observatory

This is the cover design for my ebook, “A Breathtaking Window on the Universe: a guide to the Roque de Los Muchachos Observatory”, which should be on sale by late summer or autumn of 2012. It explains why the observatory is on La Palma and how a telescope and its instruments work, and gives details of each telescope, plus many anecdotes and over 60 photos. I’ll be posting full details…

March 11, 2012