The rare daytime astronomical event, in which Venus can be seen as a tiny black dot crossing the sun, won't happen again until 2117. Andrea Wulf, author of Chasing Venus, explains how 18th-century astronomers used the event to calculate the distance between the Earth and the sun.
NASA's Kepler mission has found a new solar system where a Saturn-like planet spins around twin stars 200 light-years away from us. It's the first direct observation of such an arrangement, and astronomists say they're not sure why the planet is there.
It won't be visible in North America, but there will be a webcast from India. The unusually long eclipse will get started at 1:24 p.m. ET. Here's how to tune in.
María Hinojosa: One-on-One
The hits and the highlights from WGBH
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