McMaster Archive

October 23, 2017

Distant Worlds in the Solar System

Have you ever wondered where comets come from, why Pluto is a dwarf planet, and whether there really is a “Planet Nine” in our midst? . . .

October 23, 2017

A Quarter Century of the Hubble Space Telescope and Beyond

Since April 1990, the Hubble Space Telescope has been orbiting 550 km above our planet diligently and precisely peering into the cosmos. Join us as . . .