Today in pretty space pics: a beautiful cosmic bubble. Imaged by California-based skywatcher Larry Van Vleet, the pic shows a giant bubble of glowing gas being blown in the nebula NGC 7635, also known as the Bubble Nebula.
When light from an exploding star in the Large Magellanic Cloud reached Earth in 1987, it was the closest supernova explosion astronomers had witnessed in centuries. Now Supernova 1987a is making history again, this time as the youngest supernova remnant that can be seen from Earth.
Carbon nanotubes may push future innovations ranging from self-repairing electronic devices to batteries based on nanotube ink and paper. Now NASA scientists may have uncovered a new recipe for making carbon nanotubes based on interstellar processes.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.