NASA's Voyager 2 is the only spacecraft to fly past all four outer planets.
Fact #6268
👍 0 · 👎 0
More Space Facts
The Milky Way galaxy contains billions of stars.
Fact #25 · Space
Some stars explode when they die.
Fact #1717 · Space
The Kuiper Belt contains many icy bodies beyond Neptune.
Fact #1619 · Space
The Hubble Space Telescope has captured deep images of distant galaxies.
Fact #61 · Space
The Wow! signal was a strong radio signal detected in 1977 that has never been fully explained.
Fact #1593 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1746 · Space
Neptune has some of the fastest winds in the solar system.
Fact #122 · Space
Solar eclipses occur when the Moon blocks the Sun from Earth's view.
Fact #189 · Space
Want more facts?
We have over 11,491 facts across 15 categories.