The Habitable Zone

The Habitable Zone

The Habitable Zone is the distance around a star where a planet is just right for water to exist as a liquid on its surface. Not boiling away. Not frozen forever. We call it many names: The Goldilocks Zone (not too hot, not too cold) The Life-friendly Zone The Water Zone
Red Giants

Red Giants

In the main sequence stage (the long middle of a star’s life), a star fuses hydrogen into helium in its core. This fusion produces energy, which pushes outward against gravity’s pull. But once the hydrogen in the core runs out, fusion slows.
Quasars

Quasars

What if I told you there are flashlights in space so bright they make our Sun look like a tiny birthday candle? Imagine you're in your backyard at night with…
Dark matter

Dark matter

UtopiaCircle Edition: simple, poetic, scientific When you hear scientists talk about Dark matter, it often sounds like something out of a sci-fi movie: invisible cosmic stuff holding the universe together.…