During its K2 campaign, NASA's Kepler spacecraft observed the eighth planet in our solar system, Neptune. Kepler detected small changes in Neptune's brightness caused by the planet's daily rotation, the movement of...

Life as we know it requires three ingredients: energy, organic...

We know that there are lots of asteroids and comets in the solar system, and we've even landed a spacecraft on a comet, so we know a reasonable amount about these objects. However in 2017, something happened that had never happened...