Mysterious Galactic Glow and Dark Matter
A faint but powerful glow of gamma rays has been puzzling astronomers for decades, shining from the center of the Milky Way galaxy.
Researchers from Johns Hopkins University believe this strange light could be the first real clue to uncovering one of the universe's greatest mysteries - dark matter.
the invisible substance thought to make up most of the cosmos
This discovery may be the key to understanding dark matter, a substance that has been elusive to scientists for years.
Author's summary: Galactic glow may reveal dark matter secrets.