01 Jan, 1970
Discover what a light year actually measures: cosmic distance, not time. Learn why astronomers use light years instead of miles, how to calculate them yourself, and mind-blowing facts about interstellar scales. Includes comparisons from our solar system to distant galaxies.
Discover the official 8 planets in order from the sun with detailed facts, telescope viewing tips, and memory techniques. Learn why Pluto was reclassified and how Earth's position enables life.
Discover the science behind blood moons: why the moon turns red during total lunar eclipses, how atmospheric filtering works, viewing tips, and debunked myths. Learn when to see the next one.