The many worlds of Pluto! (Credit: NASA/HST/SETI Institute). By now, you’ve heard the news and read the tweets; Pluto has a fourth moon to accompany Charon, Nix, & Hydra. The discovery announcement came last week from a team of astronomers led by the SETI Institutes’ Mark Showalter utilizing the Hub ...
Five spacecraft from Earth are currently moving out into the stars. After their operations cease, these spacecraft will continue to coast indefinitely. None of them will come close to any known stars, and it is unlikely they will encounter any star systems for at least for millions of years. This il ...
