Research suggests that 'time cells' – neurons in the hippocampus thought to represent temporal information – could be the glue that sticks our memories together in the right sequence so that we can properly recall the correct order in which things happened.
Neptune has a new moon, and it’s also the gas giant’s smallest to date — only a little over 20 miles across. It was discovered using the Hubble Space Telescope combined with a new method to track dim objects as they orbit.