via Astronomy Picture of the Day (link)Credit: Hubble Heritage Team, ESA, NASA
Explanation: Big, beautiful, barred spiral galaxy NGC 1300 lies some 70 million light-years away on the banks of the constellation Eridanus. This Hubble Space Telescope composite view of the gorgeous island universe was released at this week's meeting of the American Astronomical Society as one of the largest Hubble images ever made of a complete galaxy. NGC 1300 spans over 100,000 light-years and the Hubble image reveals striking details of the galaxy's dominant central bar and majestic spiral arms. In fact, on close inspection the nucleus of this classic barred spiral itself shows a remarkable region of spiral structure about 3,000 light-years across. Unlike other spiral galaxies, including our own Milky Way, NGC 1300 is not presently known to have a massive central black hole.
A wheel or disk mounted to spin rapidly about an axis and also
free to rotate about one or both of two axes perpindicular to
each other and the axis of spin so that a rotation of one of the
two mutually perpendicular axes results from application of
torque to the other when the wheel is spinning and so that the
entire apparatus offers considerable opposition depending on
the angular momentum to any torque that would change the direction
of the axis of spin.
— Webster’s Seventh New Collegiate Dictionary