Unfettered by tales of science fiction, the cosmos is almost incomprehensibly large.
We start your tour of the cosmos with gas and ice giants, a lot of rocks, and the only known abode for life.
Giant clouds of gas and dust sprinkled with splashy star clusters adorn the Milky Way’s spiral arms, while the galaxy’s vast halo teems with darker matter.
The Milky Way’s family of galaxies is locked in a multi-billion-year battle for gravitational supremacy.
Small groups combine with larger clusters to form a vast network of interconnected galaxies that spans 110 million light-years.
Everything astronomers have learned points to a universe populated by superclusters of galaxies, incredibly long filaments, and colossal voids.
Sky this Month
StarDome and Path of the Planets
In Every Issue
From the Editor