3 ms·
https://en.wikipedia.org/wiki/Glossary_of_astronomy#starfield https://en.wikipedia.org/wiki/Glossary_of_astronomy#starfiel...
by cwillu 4y ago
https://en.wikipedia.org/wiki/Glossary_of_astronomy#starfield https://en.wikipedia.org/wiki/Glossary_of_astronomy#starfiel...