White dwarf stars are so dense that a matchbox-sized amount would weigh about 10 tons on Earth.

There are rogue planets drifting through space with no star at all.

Fact #1823 · Space

Cosmic rays constantly bombard Earth from space.

Fact #1621 · Space

There are planets made of diamond.

Fact #1688 · Space

There are stars older than the Milky Way.

Fact #1697 · Space

The Sun will eventually expand into a red giant.

Fact #111 · Space

The Moon's surface is covered with regolith, a layer of loose rock and dust.

Fact #241 · Space

The telescope expanded understanding of the universe.

Fact #1553 · Space

Light from distant galaxies shows us the past.

Fact #1682 · Space