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Emission spectra (2) |
Stellar spectra (2) |
Astronomical spectroscopy (1) |
Bremsstrahlung (1) |
Exosat satellite (1) |
Interstellar matter (1) |
Iron (1) |
Luminosity (1) |
Quasars (1) |
Seyfert galaxies (1) |
Now showing items 1-10 of 2