Black Dwarf Nasa

A white dwarf is what remains of a main-sequence star of low or medium mass (below approximately 9 to 10 solar masses (M☉)) after it has either expelled or fused all the elements for which it has sufficient temperature to fuse. What is left is then a dense sphere of electron-degenerate matter that cools slowly by thermal radiation, eventually becoming a black dwarf. If black dwarfs were to...

Low Mass Protostar NASA.gov

In the late Middle Ages, with a growing awareness of the infinite value of the Mass, came a growing desire to multiply its celebration. Spiritual, as well as material reasons were at hand. The most pronounced result of the multiplying of Masses was the increase in low Masses, since most of them were for private requests and had no public character. This trend to the private and the subjective, to...
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