Reposted by Clément PIEL
🍁 Curiosité scientifique du jour
On dit que l'automne « colore » les feuilles. En vrai, pour le jaune, il ne fait qu'enlever un masque.
Pour le rouge, c'est une autre histoire : l'arbre le fabrique exprès.
Petit fil sur la chimie des feuilles 🧵⬇️
📷 Andy Holmes
![4-panel comic. (1) April 2023: [JUICE space probe flying away from Earth] FROM EARTH: *JUICE* is en route to explore the icy moons of Jupiter! JUICE: *Wheee!* (2) August 2024: [JUICE flying past Earth] JUICE: ...So which planet was I visiting again? I got distracted. FROM EARTH: Jupiter! JUICE: Right, OK. (3) September 2026: [JUICE flies past Earth again] JUICE: Is Jupiter the one with all the rings? Or... FROM EARTH: No, the big one near it. JUICE: Got it! (4) January 2029: [JUICE returning to fly past Earth again] JUICE: And *which* moons am I looking at? FROM EARTH: Oh my *god*. FROM EARTH: Now I get why we budgeted for so many Earth flybys.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreih2hocndvj6rupk5itttpmxce7tdl465uzaf5iibkzipzyvoy4tuq)
