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Beyond: stars and galaxies — Homework
Use light speed (about 300,000 km/s) and this week's light-year ideas.
- 1.What is a light-year a measurement of: time or distance? Explain.
- 2.About how many trillion km does light travel in 3 light-years?
- 3.Proxima Centauri is about 4.24 light-years away. What does that tell you about the light reaching us from it right now?
- 4.About how many stars are estimated to be in the Milky Way galaxy?
- 5.Explain why the Sun being an "ordinary" star, rather than a special one, is itself an interesting scientific finding.
🌲 Homeschool of the FutureEighth Grade · Science · week 33 homework