Eric Walker added STELLA Robotic Observatory — English to STELLA Robotic Observatory

Eric Walker added This Star Looked Like It Would Explode. Maybe It Just Sneezed - The New York Times to Betelgeuse, 1990 Hubble Space Telescope (HST) and STELLA Robotic Observatory

Eric Walker added This Star Looked Like It Would Explode. Maybe It Just Sneezed - The New York Times and STELLA Robotic Observatory — English to STELLA Robotic Observatory, and added STELLA Robotic Observatory to Telescopes, observatories and telescope networks

Eric Walker added a number of topics and r/geology - The Dee Wright Observatory in Sisters, Oregon. It sits in the middle of a lava flow and made of the rocks it surrounds. to Telescopes, observatories and telescope networks, and added Telescopes, observatories and telescope networks to Astronomy, astrophysics and cosmology and Measuring instruments and measurement techniques