Yellow and red patches contain
the most galactic dust.
Not exact matches
For tens of millions of years,
most have been far from the
galactic disc where
dust and gas resides, so heavy elements such as calcium should have sunk beyond detection long before.
Most galaxies in the universe revolve around central black holes, which feed voraciously on
galactic gas and
dust and spew out radiation.
The
most likely explanations involve radiation or outflows from an active
galactic nucleus (AGN) that is strongly obscured by
dust so that only a faint source can be seen associated with the nebula.
This fuzzy warmth from the
galactic center has puzzled scientists for 30 years and clearer observation of it has led Ghez and her collaborators to conclude that it is
most likely superheated interstellar
dust on the verge of falling into the black hole in the paper presenting their findings in the current issue of Astrophysical Journal Letters.
Giant
dust clouds block
most of the starlight coming from the
galactic center.