As it makes its long-awaited approach to Pluto, NASA’s New Horizons spacecraft has detected the presence of frozen methane on the dwarf planet’s surface. Scientists first observed the chemical compound on Pluto in 1976. Now, they have confirmed the presence of this chemical, using New Horizons’ first readings from the spacecraft’s infrared spectrometer. Will Grundy… Read more

On July 14, NASA’s New Horizons spacecraft is set to fly through the Pluto system. It will glide in at an angle of 46 degrees to the plane of the dwarf planet’s orbit, penetrate the plane, then pass through the shadows first of Pluto and then of its moon, Charon. After it passes Charon it… Read more