Night Vision: A Century of General Relativity


100A century ago, Albert Einstein published his General Theory of Relativity, which radically changed our understanding of gravity. Einstein proposed that gravity results from the curvature of a blend of space and time that is today appropriately called space-time. Space-time curvature is caused by the presence of mass or energy. One of the key ideas of general relativity is that mass tells space-time how to curve and space-time tells mass how to move.

Okay, whoa. What? What does that have to do with planets and space science?

The general theory of relativity is used to predict the motions of the planets, including a previously unexplained small motion of the orbit of the planet Mercury. It also describes the gravitational bending of light from distant stars and galaxies, the expansion of the universe, and the extreme conditions that exist near a black hole.

Who knew?

Join us for 100 Years of General Relativity to take a brief tour of the night sky and then explore some of the ideas and consequences of this towering achievement of 20th-century physics. And don’t forget to bring some questions because this exploration of the space-time curvature theory is bound to be mind-bending.

Night Vision: 100 years of Relativity is hosted on Thursday evening, November 19th and Saturday evening, November 21st, in the Hansen Dome Theatre at 6:45pm. Tickets available online or at the Clark Planetarium ticket desk. Free for members and $2 for everyone else.

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