Voyager 1 has been traveling through space since 1977, and some scientists hoped it could keep sending back science data for 50 years. But a serious glitch has put that milestone in jeopardy.
Neptune has long been depicted as a deeper, darker blue than its fellow ice giant Uranus, but a new study shows that both are a similar shade of light greenish blue.
Scientists who want to understand what's beyond our solar system have designed an interstellar spacecraft that could go out farther and faster than the famous Voyager probes.