Horsehead nebula

Stardust

Look: 7 strange facts unlocking secrets of nebulae

These space clouds look like art — but they’re more than their beauty.

NASA, ESA, and the Hubble Heritage Team (AURA/STScI)

NASA, ESA/Hubble and the Hubble Heritage Team

For more than 30 years, the Hubble Space Telescope has been our eye on the universe’s stunning nebulae.

Simply put, a nebula is a giant cloud of dust and gas in space.

Sometimes they appear when a star dies, and other times they are nurseries for new stars.

NASA, ESA, and the Hubble Heritage Team (AURA/STScI)