Astrometry talk

Bath Royal Literary and Scientific Institution, Bath, 3 April, 7.30pm

The pioneering efforts to make a 3D map of our Galaxy are explored in this talk by ESA/Gaia project scientist Michael Perryman. He leads on Hipparcos and Gaia, two missions to measure the position and movements of a billion stars. Visitors £5; members/students £2. www.brlsi.org