When the four-decades-old Voyager 1 and Voyager 2 spacecraft entered interstellar space in 2012 and 2018, respectively, scientists celebrated. These plucky spacecraft had already traveled 120 times ...
Scientists plan for the Interstellar Probe to reach 1,000 AU -- 1 AU is the distance from the sun to Earth -- into the interstellar medium. That's about 10 times as far as the Voyager spacecraft have ...