Two NSDL blogs have commemorated the 50th anniversary of the beginning of the Space Age. On October 4, 1957, the Soviet Union launched its “prosteishy sputnik,” or “simplest satellite.” Sputnik-1 stayed in Earth’s orbit for 22 days, sending back a signal to announce that the space age had begun. The Expert Voices blog NSDL Highlights recently reviewed library resources that relate to Sputnik, while the Pathways News blog posted a guide to Sputnik and Aerospace resources in the Engineering Pathway. Be sure to also check out the homepage of NASA, which posted its Sputnik offering on October 4.