Buy the NGC 1365 space photo.
High quality Hubble picture, slide, or Duratrans backlit transparency. NASA photograph H99-34a2
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Click to see selection as Astronomy Picture of the Day (APOD) - October 8, 1999
This image in infrared light reveals how the
barred spiral galaxy NGC 1365 is feeding material into its central
region, igniting massive star birth and probably causing its bulge of
stars to grow. The material also is fueling a black hole in the galaxy's
core. A galaxy's bulge is a central, football-shaped structure composed
of stars, gas, and dust.
A barred spiral is characterized by a lane of stars, gas, and dust
slashing across a galaxy's central region. It has a small bulge that is
dominated by a disk of material. The spiral arms begin at both ends of
the bar. The bar is funneling material into the hub, which triggers star
formation and feeds the bulge.
In this infrared image, the Hubble telescope penetrates
the dust seen in the WFPC2 picture to reveal more clusters of young
stars. The bright blue dots represent young star clusters; the brightest
of the red dots are young star clusters enshrouded in dust and visible
only in the infrared image. The fainter red dots are older star
This NICMOS image, taken at a wavelength of 16,000 Angstroms,
was combined with the visible and near-infrared wavelengths taken by
October 6, 1999
Credits for the NICMOS image: NASA, ESA, and C. Marcella Carollo