The nebula is a favorite target for amateur and professional astronomers. It is shadowy in optical light. It appears transparent and ethereal when seen at infrared wavelengths.
The rich tapestry of the Horsehead
Nebula pops out against the backdrop of Milky Way stars and distant
galaxies that easily are visible in infrared light.
During that time, it has benefited from a slew of upgrades from
space shuttle missions, including the 2009 addition of a new imaging
workhorse, the high-resolution Wide Field Camera 3 that took the new
portrait of the Horsehead.
The cloud also contains other well-known objects such as,
It is one of the nearest and most easily
photographed regions in which massive stars are being formed.
Hubble Sees a
Horsehead of a Different Color
Along the nebula's top ridge, two
fledgling stars peek out from their now-exposed nurseries.
This casts a shadow that protects
material behind it from being stripped away by intense stellar
radiation evaporating the hydrogen cloud, and a pillar structure