“There is no gravity in space”

The common image of astronauts effortlessly floating inside a spacecraft has led many to believe that gravity simply doesn't exist in space. This captivating visual often creates the impression that once you leave Earth's atmosphere, you escape the pull of gravity entirely, leading to a widespread misconception about this fundamental force of nature.

However, the truth is that gravity is ubiquitous, existing everywhere in the universe, though its strength diminishes with increasing distance from a mass. Astronauts aboard the International Space Station, for instance, are not experiencing an absence of gravity. Instead, their apparent weightlessness, known as microgravity, is a result of being in a continuous state of freefall around Earth. The station and everything within it are constantly falling towards our planet, but their tremendous orbital speed keeps them perpetually missing the ground, creating the sensation of floating.

The idea that gravity is absent in space is further debunked by the fact that even at the ISS's orbital altitude, Earth's gravitational pull is still remarkably strong, approximately 90% of what it is at sea level. The misconception arises from confusing "weightlessness" with "no gravity." While astronauts feel weightless, they are very much under the influence of Earth's powerful gravitational field, which is precisely what keeps them in orbit rather than drifting off into deep space.