Photos and videos of astronauts on the ISS show them floating around, but saying there's zero gravity isn't fully accurate.

Legend has it that Isaac Newton had the moment of inspiration that would lead to his theory of gravity when, on a warm afternoon, he saw an apple fall from a tree and wondered why it should fall down ...

When Albert Einstein introduced his theory of general relativity in 1915, it changed the way we viewed the universe. His ...

Hula hooping is so commonplace that we may overlook some interesting questions it raises: 'What keeps a hula hoop up against gravity?' and 'Are some body types better for hula hooping than others?' A ...

Science has done a terrific job of answering some of the world’s most difficult questions, but certain mysteries still elude researchers. How does gravity work? Can your pet fish really predict an ...

A theoretical study suggests that gravity could have quantum effects without itself being a quantum theory. Other researchers ...