It's been a truly remarkable year for astronomical adventures. On Earth we witnessed the marvels of a solar eclipse crossing the United States, an Interstellar visitor entered our solar system, and we discovered some exciting Earth-sized exoplanets. Some astonishing images of the farthest reaches of our universe were also captured. In this special gallery we collect some of the most awe-inspiring outer space images of 2017.
- interstellar space
- How do you catch an interstellar asteroid? Go fast ... really, really fast
- Cassini detects alien dust particles
- First interstellar asteroid reveals its strange secrets
- Breakthrough Listen Initiative starts sharing "search for ET" data
- NASA Voyager 1 spacecraft rides interstellar tsunami wave
- Voyager 40th anniversary: Tracing an epic journey of discovery