Search Results
Search type | Search syntax |
---|---|
Tags | [tag] |
Exact | "words here" |
Author |
user:1234 user:me (yours) |
Score |
score:3 (3+) score:0 (none) |
Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
Views | views:250 |
Code | code:"if (foo != bar)" |
Sections |
title:apples body:"apples oranges" |
URL | url:"*.example.com" |
Saves | in:saves |
Status |
closed:yes duplicate:no migrated:no wiki:no |
Types |
is:question is:answer |
Exclude |
-[tag] -apples |
For more details on advanced search visit our help page |
For questions about the gases which surround a planet or some other celestial body.
3
votes
What would make a sky appear purple during the day?
Constant volcanic activity, fires, or oceans full of algae that reflect red light combined with a bright sun and a thick atmosphere could cause a violet-shade sky. … Here's an idea: If you had a high amount of neon in the atmosphere and constant storms, the sky would appear blue and purple as neon plasma is reddish in hue. …