NGC 6397
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NGC 6397 is a globular cluster in the constellation Ara that was discovered by French astronomer Nicolas-Louis de Lacaille in 1752. It is located about 7,800 light-years from Earth, making it one of t
A Hubble Space Telescope (HST) image of NGC 6397
Hubble's view of globular cluster NGC 6397
NGC 6397 imaged by Euclid
White dwarf
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A white dwarf is a very dense type of star: in an Earth-sized volume, it packs a mass that is comparable to the Sun. A white dwarf radiates light from residual heat and eventual crystallization, not f
NGC 6397
…0.083 times the mass of the Sun. In February 2021, the core of NGC 6397 was reported to contain a relatively dense concentration of compact objects (white dwarfs, neutron stars and black holes), based on the movement of stars near the core derived from data gathered by the Hubble Space Telescope and the European…
Artist's impression of debris around a white dwarf
Comet falling into white dwarf (artist's impression)
Artist’s impression of WD 1856b
Artist's impression of the WD J0914+1914 system