Portal:Astronomy/Did you know/10


 * ... that Jerry Nelson is the principal designer and project scientist for the Keck telescopes?
 * ... that five supernovae have been found in the Messier 100 spiral galaxy?
 * ... that the Antlia Dwarf galaxy may have distorted the shape of its neighbour NGC 3109 one billion years ago?
 * ... that AP Columbae, the closest young star known, formed after the dinosaurs became extinct?
 * ... that a planet was discovered around the star MOA-2009-BLG-387L after it eclipsed a background star, refracting the star's light in a process called gravitational microlensing?