Explanation: In 1716, English astronomer Edmond Halley noted, "This is but a little Patch, but it shows itself to the naked Eye, when the Sky is serene and the Moon absent." Of course, M13 is now less modestly recognized as the Great Globular Cluster in Hercules, one of the brightest globular star clusters in the northern sky. Sharp telescopic views like this one reveal the spectacular cluster's hundreds of thousands of stars. At a distance of 25,000 light-years, the cluster stars crowd into a region 150 light-years in diameter. Approaching the cluster core, upwards of 100 stars could be contained in a cube just 3 light-years on a side. For comparison, the closest star to the Sun is over 4 light-years away. The remarkable range of brightness recorded in this image follows stars into the dense cluster core.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: M 13 - globular cluster - Sharovoe skoplenie Publikacii so slovami: M 13 - globular cluster - Sharovoe skoplenie
Sm. takzhe: Milliony zvezd v ω Centavra Sharovoe zvezdnoe skoplenie 47 Tukana M15: plotnoe sharovoe zvezdnoe skoplenie NGC 2419: mezhgalakticheskii strannik NGC 4372 i tumannost' Temnaya shtuchka NGC 1850: v Mlechnom Puti takih net Sharovoe zvezdnoe skoplenie NGC 6355 ot teleskopa im.Habbla Vse publikacii na tu zhe temu >>