Things in space with F

• Frost

  Space frost forms on the Moon, Mars, and comets.

• Fireball

  An astronomy term for a very bright meteor.

• full moon

  A real lunar phase—full moon is in space.

• Fuel

  Rocket fuel rides with spacecraft out in space.

• falling stars

  Plural meteors—real space rocks streaking.

• falling star

  Colloquial for visible meteor burning in sky.

• Flares

  Solar flares erupt from the Sun into space

• Flare

  Flare can mean solar flare, a real space event

• Fluorine

  Element in space; fluorine detected in stars.

• flying meteors

  Meteors flying through space before burning up

The words in the list Things in space with F come from players of the word game Categories game.