CAPE CANAVERAL, Fla. (AP) — NASA launched a satellite on Thursday night to explore the mysterious, dynamic region where air meets space. The satellite — called Icon, short for Ionospheric Connection ...

The instrument was used to measure low-energy charged particles, including ions, electrons, cosmic rays originating from our solar system and galaxy.

That interstellar traveler is none other than NASA's Voyager 1, which used its backup radio transmitter, which hasn't been activated since 1981, to send a message back to Earth. The message came after ...