3 ms·
Dark matter is not a theory and even less a hyphothesis. It's an observation. https://youtu.be/PbmJkMhmrVI https://youtu.be/PbmJkMhmrVI
by unaindz 3y ago
Dark matter is not a theory and even less a hyphothesis. It's an observation.
https://youtu.be/PbmJkMhmrVI https://youtu.be/PbmJkMhmrVI