Massive asteroid 3 Juno shines in opposition on Wednesday (Sept. 7)
Asteroid 3 Juno, half the length of the Grand Canyon, will whip past Earth at an average speed 30 times that of a jet fighter on its 4-year orbit around our star.
TroibNews 
Asteroid 3 Juno, half the length of the Grand Canyon, will whip past Earth at an average speed 30 times that of a jet fighter on its 4-year orbit around our star.
