And just as that dog's owner gets pelted with this material if they stand too close, the solar system is pelted with matter from Alpha Centauri, with the Oort Cloud serving as our unfortunate ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.

The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away that has long been a ...