Gravity, in the literal sense, keeps everyone (and everything) on Earth grounded. It acts as the anchor that prevents objects ...

There are times when you glance in the mirror in the morning and feel as though your facial skin has sagged downward. Observing nasolabial folds stretching vertically and horizontally around the ...

To live on the moon or Mars, humans will need heat and air conditioning that can operate long term in reduced gravity and temperatures hundreds of degrees above or below what we experience on Earth.