An exoplanet like a hot Jupiter, orbiting close to its sun, would likely have an aurora up to 1,000 times brighter than one on Earth. Read more on exoplanet aurora.
In the first experiment of its kind, scientists used fMRI technology to shed light on the neural basis of the so-called "uncanny valley." Read more on brain imaging.
As the Hubble Space Telescope worked to support NASA's New Horizons mission to Pluto, it also found a fourth moon for the dwarf planet, scientists announced today.