Colleges and universities are understandably quite proud of their libraries, which can be a selling point for prospective students and donating alumni alike, and they often become the most well-designed and beautifully adorned buildings on campus. To that end, and perhaps to inspire your studies a bit, we’ve collected a few of the most beautiful college and university libraries in the world, from Portugal to France to Boston.

Nature is awesome. I don’t care what anyone says: nature porn is the best porn out there.

Explanation: September’s equinox arrives today at 0905 UT. As the Sun crosses the celestial equator heading south, spring begins in the southern hemisphere and autumn in the north. And though the seasonal connection is still puzzling, both spring and autumn bring an increase in geomagnetic storms. So as northern nights grow longer, the equinox also heralds the arrival of a good season for viewing aurora. Recorded earlier this month, these curtains of September’s shimmering green light sprawl across a gorgeous night skyscape. In the foreground lies Hidden Lake Territorial Park near Yellowknife, Northwest Territories, Canada. Calm water reflects the aurora, with bright star trails peering through the mesmerizing sky glow. Of course, shining at altitudes of 100 kilometers or so, planet Earth’s auroras are visible from space.