Sometimes "the universe comes to us," writes the European Space Agency. For the third time since 2017, an interstellar object will enter our solar system. What is it and are we prepared?

Interstellar visitor Comet 3I/ATLAS was discovered just a week ago and ever since, astronomers across the world have been hard at work following it, trying to gather as much data on it as possible. The initial data on this object already suggested marked differences between it and the previous two known interstellar objects that crossed the Solar

Late in the evening on July 1, a telescope in Chile that is part of the global, NASA-funded Asteroid Terrestrial-Impact Last Alert System (ATLAS) picked up on a new moving dot in the sky, an object traveling past the orbit of Jupiter.