The Europa Clipper, the largest spacecraft built for planetary exploration, is on its way to determine whether Jupiter's moon, Europa, is habitable. https://cnn.it/3YlBi1x | CNN

For the first time, scientists have been able to trace the origins of a ghostly subatomic particle that traveled 3.7 billion light-years to Earth https://cnn.it/2uiq2V7 | CNN

A lake of liquid water has been detected beneath the surface of Mars. Here's why it matters that there's water on the red planet: https://cnn.it/2Oq3n1B | CNN