A look back at Lyndon B. Johnson's space legacy, 50 years after his death

Fires in a microgravity environment (like the space station) are fed by random oxygen molecules stumbling into them in a process called molecular diffusion. This produces spherical flames that burn more slowly and consume less oxygen, giving off a fraction of the heat emitted by terrestrial flames.

Earthquakes suggest Earth's core has started spinning more slowly

Data Storage: A Key Element in the Evolution of Space Technology