Hubble Space Telescope image
the bright, spiky stars
lie in the foreground toward the heroic northern constellation
Perseus and well within our own Milky Way galaxy.
In sharp focus beyond is
a giant spiral galaxy about 232 million light-years distant.
Some 800,000 light-years across compared to the Milky Way's
diameter of 100,000 light-years or so, it has around 1 trillion stars.
That's about 10 times as many stars as the Milky Way.
to understand how galaxies can grow to such enormous sizes,
UGC 2885 was also part of
and astronomer Vera Rubin's
pioneering study of the rotation of spiral galaxies.
Her work was the first to convincingly demonstrate
the dominating presence of
dark matter in our universe.
Authors & editors:
NASA Web Site Statements, Warnings,
NASA Official: Jay Norris.
A service of:
& Michigan Tech. U.
Publications with keywords: spiral galaxy
Publications with words: spiral galaxy