Uncategorized
- Planetary Science
Space Flight Basics
For armchair space explorers, NASA’s Jet Propulsion Laboratory offers a tutorial on how to operate an interplanetary space mission. Originally created a decade ago, the newly updated guide includes information on spacecraft engineering, mission design, trajectories, launch, navigation, telecommunications, and much more. Go to: http://www.jpl.nasa.gov/basics/
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18938
In grad school, I read and learned from Ernst Mayr’s Populations, Species, and Evolution (1963, 1970, Harvard University Press). I think that “Alarming butterflies and go-getter fish” extremely simplifies Mayr’s position on speciation. The article says that Mayr focuses solely on geographic separation, “allopathic speciation.” This ignores the fact that Mayr discussed a variety of […]
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Alarming Butterflies and Go-Getter Fish
Recent studies suggest that there may be more ways to create new species than Darwin imagined.
