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White dwarf star is still feasting on dead Earth-like planet 3 billion years later

Astronomers recently peered deep into space and found that an old, faint white dwarf named LSPM J0207+3331, located about 145 ...
Nature

Absorption Spectrum of the Hydrogen Molecule

WITH the continuous spectrum described by Lyman (Astrophysical Jour., 60, 1) as a background, and with hydrogen flowing through the receiver of the spectrograph, it was found possible to photograph ...