IndexNo:810315:bEtXyefoBN
| 投稿者 | Haley |
|---|---|
| 投稿日時 | 2014/08/11 23:04:39 |
| I came here to study online homework help Voyager 1 and its twin, Voyager 2, were launched 16 days apart in 1977. Both spacecraft flew by Jupiter and Saturn. Voyager 2 also flew by Uranus and Neptune. Voyager 2, launched before Voyager 1, is the longest continuously operated spacecraft. It is about 9.5 billion miles (15 billion kilometers) away from our sun. | |