← Back to Unit 1 · Block 1
Four planets, shown as your eye (or a camera, or something else; that's the point) would see them. No names, no labels, no scale. Work through the three questions below before anything gets flipped.
Class rule
Nothing gets flipped until we finish question 3. If you're revisiting this page after Block 1: flip away. First-timers: looking first is the whole exercise.
The three questions
- What can you see? Observation only: color, apparent size, surface features, clouds. No naming, no guessing.
- What can you guess? Which of these could support life, and how would you decide? Every reason goes on the board.
- What would you need to know? What data is missing? What would you measure or look up before answering with confidence?
After the reveal
One of these four images is not like the others, and if you treated them all the same during questions 1 and 2, that's not a mistake, it's the lesson. Every source has an Origin. From here on, we check before we trust. That's OPVL, and it applies to images too.
Done here? Back to the lesson:
← Unit 1 · Block 1