<p>You cannot double major at Harvard. You can create a joint concentration, which means you must write a thesis, and the thesis will be judged on how well you combine the two fields. Anthropology and astronomy is probably impossible. Some other concentrations, like economics, will not let you create a joint concentration with them. I believe you could acquire a joint concentration and a secondary field (minor) if you felt like it, but given Harvard’s course structure, doing so would be terrible for both your academic and non-academic lives without any real payoff.</p>
<p>Not really. You have heard of the SAT and ACT, yes?</p>