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Early 1900s comparison of elemental, solar, and stellar spectra
Early 1900s comparison of elemental, solar, and stellar spectra
Supernova remnant LMC N 63A imaged in x-ray (blue), optical (green) and radio (red) wavelengths. The X-ray glow is from material heated to about ten m
Supernova remnant LMC N 63A imaged in x-ray (blue), optical (green) and radio (red) wavelengths. The X-ray glow is from material heated to about ten million degrees Celsius by a shock wave generated by the supernova explosion.
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The SDO satellite
The SDO satellite