Lesson plan
Variable nebula
image of NGC 2261, a classic example of a variable nebula. Variable nebulae are reflection nebulae that change in brightness because of changes in their illuminating star.
Article summary
image of NGC 2261, a classic example of a variable nebula. Variable nebulae are reflection nebulae that change in brightness because of changes in their illuminating star.
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
No sources recorded.
Key claims and bibliography are generated from the same tracked claims and sources as the article page.