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Atoms and molecules usually emit their characteristic wavelengths because of the electrons' energy levels.... Do the completely ionized ('naked') nuclei absorb and/or emit EM radiation? If so, at what type...
Asked on 01/06/2022
2 answerIn a plasma, or wherever, do the completely ionized nuclei commonly absorb much EM radiation? Or any free neutrons or protons? Can astronomers detect this? Enough so...
Asked on 01/04/2022
1 answerIs there a particular reason why stars cannot grow as massive as they want to? And why doesn't this limit apply to supermassive black holes?...
Asked on 01/04/2022
1 answerAs far as I am aware, the latest spectral types that have been assigned are around Y2, for objects like WISE 0855-0714 that have temperatures around 250...
Asked on 12/28/2021 by user24157
1 answerIn the video How to spot Comet NEOWISE, plus the largest 3D map of the Universe | Night Sky News July 20 after 05:28 Dr. Becky (Smethurst,...
Asked on 12/26/2021
1 answerWhat is the "hypothesized lower mass gap" between 2.5 and 5 solar masses? eventually links to Constraining the masses of microlensing black holes and the mass...
Asked on 12/24/2021
1 answerThe Saturn system is about 10 times as far from the Sun as the Earth. This question is concerning Titan for two reasons: Titan has an Earthlike atmosphere so you...
Asked on 12/24/2021
1 answerAccording to the wikipedia page, there are multiple effects contributing to the perihelion precession of Mercury. Of course, according to this link and ...
Asked on 12/21/2021
2 answer1) I can't manage to find/justify the relation (1) below, from the common relation (2) of a volume. 2) It seems the variable r is actually the comoving distance and...
Asked on 12/16/2021
0 answerI've had a Celestron 127EQ for a couple years now and have only used it a couple times. One of the reasons I haven't gotten much use out of it...
Asked on 12/16/2021 by theMikeSwan
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