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?

NASA has discovered an interstellar comet that's wandered into our backyard. Luckily, it won't get near enough to be a threat to our planet.

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.