Eric Walker added Jim Peebles - Wikipedia to Jim Peebles

Eric Walker added Baha'i Blogcast with Rainn Wilson - Episode 7: Steven Phelps - YouTube to a number of topics

Eric Walker added Jim Peebles - Wikipedia and Baha'i Blogcast with Rainn Wilson - Episode 7: Steven Phelps - YouTube to Jim Peebles, and added Jim Peebles to Astronomy, astrophysics and cosmology and Physicists

Eric Walker added a number of topics and a number of links to Astronomy, astrophysics and cosmology, and added Astronomy, astrophysics and cosmology to Space travel, exploration and defense and Physics

Eric Walker added a number of topics to Physicists, and added Physicists to Scientists, researchers and academics and Physics