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Learn how astronauts train for landing through simulations, emergency procedures, G-force preparation, and spacecraft-specific return drills.

Learn what a meteor shower is, how it happens, and the best ways to watch one with confidence.

Explore how astronomy uses observation, mathematics, and testable theories to explain the universe as a true science.

Explore how astronauts train for Mars through simulations, isolation, robotics, space medicine, and survival drills that prepare crews for deep-space flight.

A radio telescope detects invisible radio waves from space, revealing galaxies, pulsars, and cosmic gas that optical telescopes cannot see.

Learn what an astronomical unit is, how it is defined, its exact value, and why astronomers use it to measure the Solar System.

Learn what an observatory is, how it functions, and why these facilities matter in astronomy, climate science, and geophysics.

Learn how astronomers use spectroscopy to identify stars, planets, galaxies, and cosmic chemistry by analyzing light across the electromagnetic spectrum.