NGC 1990
Encyclopedia
NGC 1990 is a Reflection nebula
which is a molecular cloud
of Epsilon Orionis
. The stellar winds from Epsilon Orionis, or Alnilam, distribute the nebula approximately up to 2000 km/s, more than 20 million times that of the stellar winds of the Sun
.
Reflection nebula
In Astronomy, reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars. The energy from the nearby star, or stars, is insufficient to ionize the gas of the nebula to create an emission nebula, but is enough to give sufficient scattering to make the dust...
which is a molecular cloud
Molecular cloud
A molecular cloud, sometimes called a stellar nursery if star formation is occurring within, is a type of interstellar cloud whose density and size permits the formation of molecules, most commonly molecular hydrogen ....
of Epsilon Orionis
Epsilon Orionis
Alnilam is a large blue supergiant star in the constellation of Orion. Its Flamsteed designation is 46 Orionis....
. The stellar winds from Epsilon Orionis, or Alnilam, distribute the nebula approximately up to 2000 km/s, more than 20 million times that of the stellar winds of the Sun
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...
.