The Voyager 1 spacecraft is so far away that its signals take over 20 hours to reach Earth.
Fact #2670
👍 0 · 👎 0
More Space Facts
The Earth's rotation speed varies slightly over time.
Fact #237 · Space
Venus has a thick atmosphere that traps heat.
Fact #56 · Space
The Yellowstone supervolcano is one of the largest volcanic systems in the world.
Fact #836 · Space
Some exoplanets orbit two stars at once.
Fact #1615 · Space
The Rosetta mission successfully landed a probe on a comet in 2014.
Fact #1013 · Space
The light you see from some stars today began traveling before humans existed.
Fact #1830 · Space
Project Mercury was the first U.S. human spaceflight program.
Fact #1074 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1750 · Space
Want more facts?
We have over 11,491 facts across 15 categories.