The Kepler telescope has changed how we see ourselves in the Universe

Twenty years ago, we didn't know if there were any planets orbiting stars other than our own. Today, it's estimated that each of the roughly 100-billion stars in our galaxy has, on average, 1.6 planets orbiting around it, as this video from astronomers and science-communicators Tony Darnell and Scott Lewis explains. » 2/21/14 8:40am 2/21/14 8:40am

How can we possibly guess what an exoplanet's atmosphere is like?

The transit-method of exoplanet-detection is pretty straightforward, conceptually: First you find a distant star. If the light from it dims, it could be due to a planet in its orbit that has passed between it and your telescope. But how do scientists determine how big these distant planets are, what they're made of,… » 12/04/13 1:40pm 12/04/13 1:40pm