Physics Core

What does it feel like to be inside a cloud? Fog offers the closest experience on the ground, as both consist of tiny water droplets suspended in the air.

Gravity doesn’t disappear in free fall, only the feeling of weight does. The hammer and feather reveal why all objects fall at the same rate in a vacuum.

The sky is no longer empty. Humanity is becoming a spacefaring civilization, building a permanent presence beyond Earth, one satellite, observatory, space station, and probe at a time.