“There is no gravity in space.”

It's a widely held belief that beyond Earth's atmosphere, gravity simply ceases to exist, leading to the visual of astronauts effortlessly floating in space. This misconception likely stems from observing footage of astronauts inside spacecraft or during spacewalks, where they appear to be entirely free from any gravitational pull. However, the truth is far more intriguing: gravity, a fundamental force of the universe, is present everywhere in space, extending infinitely, though its strength certainly diminishes with distance.

The apparent weightlessness experienced by astronauts in orbit isn't due to a lack of gravity, but rather a continuous state of freefall. Imagine being on a roller coaster at the very top of a steep drop; for a brief moment, you feel weightless as the coaster begins its descent. Astronauts in orbit are constantly experiencing a similar sensation because their spacecraft is continuously falling towards Earth, while simultaneously moving forward at incredibly high speeds. This delicate balance between falling and moving horizontally prevents them from hitting the Earth, creating the effect of perpetual weightlessness.

Even at the altitude of the International Space Station, Earth's gravity is still quite strong, about 90% of what we experience on the surface. Therefore, the common belief that there's "no gravity" in space is a misunderstanding of what weightlessness truly means. It's not an absence of gravity, but rather a constant state of falling around a massive object, which makes things appear and feel as if gravity isn't there. This visual illusion contributes significantly to the persistent nature of this space myth.