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发帖数: 1994 | 1 The Planet, the White Dwarf, and the Neutron Star
Credit: H. Richer (Univ. British Columbia), et al. NASA, NOAO
Explanation: A planet, a white dwarf, and a neutron star orbit each other in the giant
globular star cluster M4, some 5,600 light-years away. The most visible member of the trio is
the white dwarf star, indicated above in an image from the Hubble Space Telescope, while the
neutron star is detected at radio frequencies as a pulsar. A third body was known to be present
in the p |
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