尤物视频

*Register at the following link to join seminar: 

Access link will be sent to your email address after registration

Synopsis

Our galaxy is stuffed with planets -- on average, every star you see has at least one alien world in orbit. But how many of those worlds are habitable? A new estimate, based on data from NASA's planet-hunting Kepler spacecraft, suggests that as many as 300 million Earths populate the Milky Way galaxy -- defined as planets that are rocky, that orbit sun-like stars, and that have surface temperatures allowing liquid water to pool and flow across their surfaces. That's a bigger number than scientists expected. Pinning down that value brings us one step closer to finding an answer to the Drake Equation, a formula devised by my dad that calculates how many detectable intelligent civilizations exist in the Milky Way. In this presentation, I'll talk a little bit about how such results become news stories, and how the new estimate fits into the Drake Equation and the search for life in the cosmos -- from the perspective of a scientist who became a science journalist. (For more information, check out "," published by National Geographic.)