File:Messier 4 HST.jpg
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[編輯]描述Messier 4 HST.jpg |
English: This sparkling picture taken by the NASA/ESA Hubble Space Telescope shows the centre of globular cluster M 4. The power of Hubble has resolved the cluster into a multitude of glowing orbs, each a colossal nuclear furnace.
M 4 is relatively close to us, lying 7200 light-years distant, making it a prime object for study. It contains several tens of thousand stars and is noteworthy in being home to many white dwarfs — the cores of ancient, dying stars whose outer layers have drifted away into space. In July 2003, Hubble helped make the astounding discovery of a planet called PSR B1620-26 b, 2.5 times the mass of Jupiter, which is located in this cluster. Its age is estimated to be around 13 billion years — almost three times as old as the Solar System! It is also unusual in that it orbits a binary system of a white dwarf and a pulsar (a type of neutron star). Amateur stargazers may like to track M 4 down in the night sky. Use binoculars or a small telescope to scan the skies near the orange-red star Antares in Scorpius. M 4 is bright for a globular cluster, but it won’t look anything like Hubble’s detailed image: it will appear as a fuzzy ball of light in your eyepiece. On Wednesday 5 September, the European Southern Observatory (ESO) will publish a wide-field image of M 4, showing the full spheroidal shape of the globular cluster. See it at www.eso.org on Wednesday. |
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來源 | http://www.spacetelescope.org/images/potw1236a/ |
作者 | ESA/Hubble & NASA |
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現時 | 2012年9月3號 (一) 11:38 | 4,165 × 4,132(13.07 MB) | Jmencisom(傾偈 | 貢獻) | User created page with UploadWizard |
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來源 | ESA/Hubble |
Credit/Provider | ESA/Hubble & NASA |
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原創日期時間 | 2012年9月3號 (一) 10:00 |
版權狀態 | 未設版權狀態 |
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http://www.spacetelescope.org/ Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |