The First-Known Interstellar Asteroid is Like a Giant Tumbling Torpedo

Remember that comet-no-wait-asteroid astronomers discovered in October on a high-velocity hyperbolic orbit around the Sun? It has been determined that the object must be of interstellar origin and, based on follow-up observations over the past several weeks, it’s shaped like nothing that’s ever been seen before. Advertisements

We May Have Just Been Visited By An Interstellar Comet

“This object came from outside our solar system.” — Rob Weryk, postdoctoral researcher at University of Hawaii’s Institute for Astronomy On October 14, 2017, what appears to be a comet (er, make that asteroid…read more below) sped past Earth at a distance of about 15 million miles after swinging around the Sun. It had come…

A Comet and the Crescent Moon

As comet Pan-STARRS heads back out into the depths of the Solar System, it’s become visible to skywatchers in the northern hemisphere (after several weeks of putting on a show in southern skies.) While poor viewing due to weather confounded some over the past few days, many people did get some great views of this…