Some galaxies are billions of light-years away.
Fact #3139
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More Space Facts
Black holes can slow time so much that seconds near them equal years far away.
Fact #1790 · Space
The universe is estimated to be about 13.8 billion years old.
Fact #1623 · Space
Black holes can slow time so much that seconds near them equal years far away.
Fact #1950 · Space
The Sun will eventually expand into a red giant.
Fact #111 · Space
Some galaxies contain supermassive black holes millions of times the Sun’s mass.
Fact #1605 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1819 · Space
Black holes can slow time so much that seconds near them equal years far away.
Fact #1776 · Space
The light you see from some stars today began traveling before humans existed.
Fact #1827 · Space
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