Teachers’ Domain has added 100 new resources mostly adapted from source material in the NSDL. The new resources update their Life and Physical Sciences collections as part of the site’s NSDL Pathways grant. Accompanying the resources are 10 new lesson plans. WGBH selected and developed these materials with the assistance of the curriculum development […]

This replica of the PS-1 (Sputnik-1) hangs in the Cosmonautics Memorial Museum in Moscow.
Fifty years ago on October 4, the Soviet Union launched its prosteishy sputnik, or simplest satellite. It stayed in Earth’s orbit for 22 days, sending back a signal to announce that the space age had begun. Sputnik only weighed about 80 […]