LMR-118 · Planets
Mars
Once it had rivers. Now it has questions.
§ A first look
§ Depths
Six ways into the same idea — from bedtime story to chalkboard. No order required.
L1 · Crayon
Told like a bedtime story.
For a curious 10-year-old. No jargon. Just a picture in your head.
Mars is a small, cold, rusty planet next door. Billions of years ago, it was warmer and had liquid water flowing on its surface — real rivers, real lakes, maybe even a small ocean. Then something went wrong. The water mostly vanished, the air got thin, and Mars became the quiet red desert it is today. We are very politely trying to find out whether anything alive ever lived there. So far: weird rocks, hints, no smoking gun. We keep going. We keep sending tiny rovers. They are very brave.
§ Strange but true
- 01The universe is stranger than your intuition. This is a rule, not an exception.
- 02Every fact in physics was once an outrageous guess. Most still feel like one.
- 03If it doesn't bend your brain a little, you haven't read it carefully enough.
§ From the field journal
Mars
"Once it had rivers. Now it has questions."
— observed, sketched, not yet fully understood.
§ Nearby
Constellations near Mars
→
Habitable Zone
The 'not too hot, not too cold' orbit. Earth is in it. Probably others are too.
→
Life
Chemistry that woke up and started copying itself.
→
Biosignatures
Chemical fingerprints of life. JWST is sniffing for them right now.
→
Venus
Earth's twin sister — if Earth were a 460°C pressure cooker with sulfuric acid clouds.