Hubble Space Telescope close-up of the Horsehead Nebula / IC434 in Orion. (credit: NASA, NOAO, ESA and the Hubble Heritage Team STScI/AURA)

Hubble Space Telescope close-up of the Horsehead Nebula / IC434 in Orion. (credit: NASA, NOAO, ESA and the Hubble Heritage Team STScI/AURA)