Galaxies on Instagram: "In a vacuum, all objects, regardless of their mass, fall at the same speed due to the absence of air resistance. This phenomenon is explained by Galileo’s principle of equivalence, which states that the acceleration due to gravity is the same for all objects. Hence, a bowling ball and a feather will fall at the same rate in a vacuum. On planets with no atmosphere, such as Mercury, the same principle applies. Without atmospheric drag, the bowling ball and the feather exper

Deepnewsai on Instagram: "In 1962, aerospace engineer Robert Truax proposed one of the boldest rocket concepts ever imagined: Sea Dragon—a colossal orbital launcher designed to launch directly from the ocean instead of a traditional spaceport. Nearly 150 meters tall and 23 meters wide, Sea Dragon would have been the largest rocket ever built. To keep costs low, the design relied on seawater ballast for stability and pressure-fed engines, avoiding complex turbopumps. The idea was radical but eleg

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