Lesson plan
Haystack Catena
Haystack Catena is a catena on Mercury. It superficially resembles a graben but is a chain of overlapping secondary craters. It is named after Haystack Observatory, and was originally named Haystack Vallis when it was imaged by Mariner 10 in 1974, but the name was changed in 2013 to align with planetary feature naming themes. It is approximately 274 km long. It is located near the center of the Kuiper quadrangle, and it is radial to a large, unnamed crater that is Tolstojan in age. To the southwest of the catena is a large (50 km diameter), unnamed crater of Kuiperian age.
Article summary
Haystack Catena is a catena on Mercury. It superficially resembles a graben but is a chain of overlapping secondary craters. It is named after Haystack Observatory, and was originally named Haystack Vallis when it was imaged by Mariner 10 in 1974, but the name was changed in 2013 to align with planetary feature naming themes. It is approximately 274 km long. It is located near the center of the Kuiper quadrangle, and it is radial to a large, unnamed crater that is Tolstojan in age. To the southwest of the catena is a large (50 km diameter), unnamed crater of Kuiperian age.
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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
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.