A UK-based nonprofit organization has proposed a mission to explore the Solar System’s first known interstellar visitor, the strange object called ʻOumuamua, via an ambitious long-range probe that would take decades to reach the enigmatic voyager. The proposal, called “Project Lyra” by the Initiative for Interstellar Studies, involves launching a spacecraftread more

Astronomers have released their first analysis of our second known interstellar visitor, comet 2I/Borisov, and these findings show that despite the comet’s extra-solar origins, the materials that this alien visitor is made of are downright familiar. First spotted on August 30, 2I/Borisov’s orbital path was quickly determined to follow aread more