L'échelle d'acuité visuelle de Landolt

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Prof. Priyamvada Natarajan explique les trous noirs :

"There are three ways to think about [black holes], and you can choose. One way is that stars, when they exhaust their fuel, have a violent end, and they leave behind — like a dead nuclear reactor — these black holes. […] Another way is to think about the fact that not even light can escape from a black hole. […] The third way is if you picture space-time as a sheet, then a black hole is a pinch in that sheet. An anomaly in the shape of space."

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Un long article sur le programme d'exploration spatiale zambien d'Edward Mukuka Nkoloso, et, en vérité, le colonialisme.

"Mukuka claimed that his father wasn’t just training the cadets for space travel, though; Nkoloso was also testing their “readiness for independence” in a political sense."

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Dans le Colorado, billy barr effectue un relevé des précipitations neigeuse, chaque jour, depuis 40 hivers.

"Learning to fall was probably the most important thing. You're gonna fall : sit. A lot easier falling on your butt than on your face."

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Bye bye, Oppy.

"My battery is low and it is getting dark."