Astronomy
8 free online tools
Astronomy and space science tools for orbital mechanics, stellar physics, and planetary calculations. Explore the cosmos with calculators for celestial bodies, space travel, and astronomical phenomena.
Age on Other Planets Calculator
Calculate your age on Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune
Orbital Velocity Calculator
Calculate orbital velocity, period, and escape velocity for celestial bodies
Solar System 3D
Interactive 3D visualization of the solar system with planet information
Escape Velocity Calculator
Calculate escape velocity for planets and celestial bodies
Luminosity Calculator
Calculate stellar luminosity using Stefan-Boltzmann law
Light Year Converter
Convert between light years, parsecs, AU, and other astronomical distances
Orbital Period Calculator
Calculate orbital period and velocity using Kepler's Third Law
Weight on Other Planets
Calculate your weight on different planets and moons in the solar system
Why Use Our Astronomy Tools?
Calculate orbital mechanics and satellite trajectories
Determine stellar properties and luminosity
Compare planetary characteristics and conditions
Visualize the solar system in 3D
Convert astronomical distance units
Educational tools for space science learning
Common Use Cases
Calculating orbital velocities for satellites and spacecraft
Determining escape velocities for planets and moons
Computing stellar luminosity using Stefan-Boltzmann law
Finding your age or weight on other planets
Visualizing planetary positions in the solar system
Converting between light years, parsecs, and AU
Calculating orbital periods using Kepler's laws
Understanding gravitational effects across celestial bodies