Some astronauts have reported hearing unexplained sounds while alone in space.
Fact #2228
👍 0 · 👎 0
More Space Facts
Neptune appears blue because of methane in its atmosphere.
Fact #167 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1865 · Space
Mercury has extreme temperature differences.
Fact #147 · Space
The Earth's magnetic north pole moves over time.
Fact #311 · Space
Venus has a thick atmosphere that traps heat.
Fact #56 · Space
The Earth completes one full rotation approximately every 24 hours.
Fact #153 · Space
The Bell Labs experiment led to the discovery of the cosmic microwave background.
Fact #1021 · Space
Light from distant galaxies shows us the past.
Fact #1682 · Space
Want more facts?
We have over 11,491 facts across 15 categories.