Space articles

Short, well-sourced stories about planets, stars, the universe, space exploration, and the questions beyond Earth.

Latest space articles

1 article

  • Blue sky above a mountain valley in Gilgit-Baltistan, Pakistan

    Why is the sky blue?

    The sky looks blue because atmospheric molecules scatter the shorter wavelengths of sunlight more efficiently, sending blue light towards our eyes from every direction.

    5 min read Read article