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xkcd.com: A webcomic of romance and math humor.

Common Star Types
This article is about Eta Carinae, a luminous blue hypergiant with anomalous Fe[ii] emission spectra. For the 1998 Brad Bird film, see The Iron Giant (film).


Evidence of Alien Life
Both too cautious AND not cautious enough: "I'm skeptical that those are aliens, so I'm going to try pulling off their masks."


Gravitational Wave Pulsars
The most important attributes of a vector in 3-space are {Location, Location, Location}


Polls vs the Street
Other pollsters complain about declining response rates, but our poll showed that 96% of respondents would be 'somewhat likely' or 'very likely' to agree to answer a series of questions for a survey.