Mars has two moons: Phobos and Deimos. That’s the whole answer to the question most people show up with. But…
New Jersey packs ten working planetariums into a state you can drive across in under two hours. That includes the…
Florida isn’t the first place anyone thinks of for stargazing. The humidity hazes the horizon, the coasts glow orange with…
For roughly fourteen centuries, educated people believed the Earth sat still at the center of everything. The Sun, the Moon,…
Ask “who was the first Australian astronaut?” and you’ll get four different answers depending on who’s arguing. That’s not a…
Four spacecraft have ever laid eyes on Tethys. The first passed by in 1979. The last went silent in 2017.…
Table of Contents The United States has produced some of the most consequential astronomers in history — people who didn’t…
Table of Contents What Is a Variable Star? {#what-is-a-variable-star} Most stars look fixed from Earth. They’re not — they just…
New Mexico has one of the darkest night skies in the lower 48. The state sits at high elevation, has…
Titan is the only moon in the solar system with a thick atmosphere and liquid on its surface. Not liquid…