Wide Angle: Galaxies

Discovery Space Special Feature
 

Galaxy-Sized Mysteries

galaxy milky way dwarf nasa
Galaxies are home to billions of stars -- and the universe's greatest mysteries. Here's a new one: Why don't dwarf galaxies in the Perseus cluster get gobbled up by larger galaxies, even as the big bullies themselves are ripped apart? Credit: NASA/CXC/IoA/A.Fabian et al.
 

Galaxies come in all shapes and sizes -- from tiny yet energetic dwarf galaxies to colossal spiral-shaped clouds of stars.

Something all of these stellar holding pens have in common, however, is a seemingly never-ending string of puzzles for astronomers.

Dive into this Wide Angle to find out invisible dark matter affects galaxies, discover the latest galactic mysteries scientists are trying to crack, or simply admire their stunning beauty.

  • Top 10: Galactic Mysteries
    The very existence of galaxies has lead to some of the greatest puzzles in the universe. HowStuffWorks presents their 10 favorite galactic mysteries.

  • Interview: Dark Matter Shields 'Super' Dwarf Galaxies
    New Hubble Space Telescope images show that some tiny galaxies are protected by invisible "force fields" of dark matter. We chat with an astrophysicist about the news.

  • Blog: Heart of Darkness
    Astronomers now know dark matter and galaxies go hand-in-hand, but the notion had a rough start. Blogger Jennifer Ouellette retraces history.

  • Puzzle: Glorious Galaxies
    Break apart these stunning images of galaxies, then try your luck putting them back together!

  • HowStuffWorks: How Galaxies Work
    HowStuffWorks explains how some of the largest and most beautiful structures in the universe tick.

  • Video: Cosmos - Galaxy
    Legendary astronomer and science popularizer Carl Sagan walks you through some of the strange aspects of galaxies at the Science Channel.

Got something to say? E-mail your questions, comments or concerns to discoveryspace@discovery.com.

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