Astronomy & Space Calculators (10)

Real astrophysics involves numbers most people never see worked out, which is why this collection starts with a schwarzschild radius calculator for finding the exact size of a black hole's event horizon from its mass. From there, work out a planet's real orbital period using Kepler's Law, the escape velocity needed to leave any planet or moon behind, and how far away something really is in light years once distances stop making sense in miles or kilometers.

There is also real coverage for the more personal and practical side of space: how much you would actually weigh on another planet, how old you would be on Mars or Jupiter given their real orbital lengths, what magnification a telescope needs to see a specific object clearly, and a star luminosity calculator for comparing brightness across the night sky. Round it out with a solar system travel time calculator for real mission length estimates and a space launch cost calculator for what it actually takes to get a payload off the ground.