Browse All : Andromeda and Hubble Space Telescope (HST) of Washington, D.C.

The Trifid Nebula: Stellar Sibling Rivalry

Title	The Trifid Nebula: Stellar Sibling Rivalry

Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Title	Deepest View of Space Yields Young Stars in Andromeda Halo

Firestorm of Star Birth Seen in a Local Galaxy

Title	Firestorm of Star Birth Seen in a Local Galaxy
General Information	What is Hubble Heritage? A monthly showcase of new and archival Hubble images. Go to the Heritage site. Back to top [ #top ]

Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	Hubble Finds Mysterious Disk of Blue Stars Around Black Hole

Title	M32: Blue Stars in an Elliptical Galaxy
Explanation	Elliptical galaxies [ http://antwrp.gsfc.nasa.gov/apod/ap961106.html ] are known for their old, red stars. But is this old elliptical [ http://www.seds.org/messier/elli.html ] up to new tricks? In recent years, the centers of elliptical galaxies [ http://www.windows.umich.edu/cgi-bin/tour.cgi?link=/the_universe/Ellipticals.html ] have been found [ http://antwrp.gsfc.nasa.gov/apod/ap991103.html http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1998AJ....116.2297P ] to emit unexpectedly high amounts of blue and ultraviolet light [ http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html ]. Most blue light from spiral galaxies [ http://antwrp.gsfc.nasa.gov/apod/ap990926.html ] originates from massive young hot stars [ http://antwrp.gsfc.nasa.gov/apod/ap991103.html ap981025.html ], in contrast to the red light from the old cool stars thought to compose ellipticals. In the above recently released, false-color photograph [ http://oposite.stsci.edu/pubinfo/pr/1999/40/pr-photos.html ] by the Hubble Space Telescope [ http://www.stsci.edu/hst/ ], the center of nearby dwarf elliptical M32 has actually been resolved and does indeed show thousands of bright blue stars. The answer [ http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1999AAS...194.0713B ] is probably that these blue stars [ http://oposite.stsci.edu/pubinfo/pr/1999/40/index.html ] are also old and glow blue, reaching relatively high temperatures by the advanced process [ http://zebu.uoregon.edu/textbook/se.html ] of fusing helium [ http://antwrp.gsfc.nasa.gov/htmltest/gifcity/msblues.html ], rather than hydrogen [ http://antwrp.gsfc.nasa.gov/apod/lib/glossary.html#hydrogen ], in their cores. M32 [ http://antwrp.gsfc.nasa.gov/apod/ap960106.html ] appears in many pictures as the companion galaxy to the massive Andromeda Galaxy [ http://antwrp.gsfc.nasa.gov/apod/ap971101.html ] (M31).

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Browse All : Andromeda and Hubble Space Telescope (HST) of Washington, D.C.