Astronomers have discovered hundreds and hundreds of exoplanets–worlds circling faraway stars. Bill shows us one of the ways they find these planets that are still too distant to be seen by even the most powerful telescopes. [planetarysociety]

Bill explains that the hardest step is making the proper type of uranium. Weapons and power plants require uranium that contains a greater amount of the isotope uranium-235 than found in natural uranium, which is mostly uranium-238. He outlines the key difficulty in separating the two isotope: They have nearly identical properties. He explains the […]

After hitting the play button, be sure to hit the full screen button and put the video in 720p mode. On June 5 2012, SDO collected images of the rarest predictable solar event–the transit of Venus across the face of the sun. This event happens in pairs eight years apart that are separated from each […]

I have to admit, I’m not particularly knowledgeable in the area of neuroscience, my experience being limited to second-hand information from my sister (who is a doctor) and from Grey’s Anatomy (the latter being the greater influence, sadly enough). So I can’t particularly put any weight behind an opinion on this, but self-proclaimed “armchair neuroscience […]