Messier 82 (M82), also known as the Cigar Galaxy, is a starburst galaxy in the constellation Ursa Major, about 12 million light-years away, famous for its intense star formation and fiery plumes of gas. It's an edge-on spiral galaxy that forms stars ten times faster than the Milky Way, driven by a massive burst of star formation in its core that expels gas and dust in powerful winds. Its unique appearance, with glowing hydrogen and dust lanes, makes it a popular target for telescopes like Hubble and Webb.
Type: Starburst galaxy, an edge-on spiral.
Location: Constellation Ursa Major, part of the M81 Group.
Distance: Approximately 12 million light-years from Earth.
Nickname: The Cigar Galaxy, due to its elongated shape.
Star Formation: Forms stars at a rate about ten times faster than the Milky Way.
Visible Light: Shows bright blue disks of young stars, with red-hued, flame-like plumes of hot hydrogen gas streaming from its core.
Infrared: Reveals massive amounts of dust being blown out from the center, which is obscured in visible light.
X-ray: Shows gas heated to millions of degrees by the violent outflows.
Structure: Despite its irregular appearance, it has been found to have two symmetric spiral arms that were previously hidden.
Visibility: Apparent magnitude of 8.4, making it a good target for amateur astronomers with small telescopes or even binoculars under good conditions. Image Credit NASA, ESA, and The Hubble Heritage Team
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