# Tags

A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Questions about the long term evolution of solar systems. For other questions about solar systems use the solar-system tag, for questions about star, galaxy or planet evolution use the stellar-evoluti…
14 questions
Created Jun 17 at 3:34
1 question
Created Jun 15 at 18:57
1 question
Created Jun 14 at 10:39
The Vera C. Rubin Observatory was formerly called the Large Synoptic Survey Telescope or LSST. The instrument itself is called the Simonyi Survey Telescope and "LSST" is now backronymed to be Legacy S…
2 questions
Created Jun 14 at 1:52
2 questions
Created Jun 8 at 9:29
1 question
Created Jun 8 at 9:29
Questions about the spectral line at 656.28 nm in the Balmer series called H-alpha or H$\alpha$.
6 questions
Created Jun 5 at 15:23
3 questions
Created Jun 5 at 9:18
4 questions
Created May 28 at 9:13
2 questions
Created May 22 at 23:33
1 question
Created May 10 at 20:48