Eric Walker added Allen Telescope Array - Wikipedia to 2007 Allen Telescope Array (ATA)

Eric Walker added Allen Telescope Array Overview | SETI Institute to 2007 Allen Telescope Array (ATA)

Eric Walker added 7 Earth-Size Planets Orbit Dwarf Star, NASA and European Astronomers Say - The New York Times to a number of topics

Eric Walker added a number of links to Allen Telescope Array (ATA), and added Allen Telescope Array (ATA) 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