Lesson plan
IC 758
IC 758 is a barred spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is , which corresponds to a Hubble distance of . However, two non-redshift measurements give a much farther distance of . It was discovered by American astronomer Lewis Swift on 17 April 1888. IC 758 is an active galactic nucleus candidate, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.
Article summary
IC 758 is a barred spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is , which corresponds to a Hubble distance of . However, two non-redshift measurements give a much farther distance of . It was discovered by American astronomer Lewis Swift on 17 April 1888. IC 758 is an active galactic nucleus candidate, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.
Key claims
- members: 13 members — source: Wikipedia · confidence 0.95
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- The record states that the members is "13 members". What evidence would count against this claim?
- 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
- Wikipedia https://en.wikipedia.org/w/index.php?oldid=1372960787
Key claims and bibliography are generated from the same tracked claims and sources as the article page.