body { -ms-overflow-style: scrollbar; overflow-y: scroll; overscroll-behavior-y: none; } .errorContainer { background-color: #FFF; color: #0F1419; max-width: 600px; margin: 0 auto; padding: 10%; font-family: Helvetica, sans-serif; font-size: 16px; } .errorButton { margin: 3em 0; } .errorButton a { background: #1DA1F2; border-radius: 2.5em; color: white; padding: 1em 2em; text-decoration: none; } .errorButton a:hover, .errorButton a:focus { background: rgb(26, 145, 218); } .errorFooter { color: #657786; font-size: 80%; line-height: 1.5; padding: 1em 0; } .errorFooter a, .errorFooter a:visited { color: #657786; text-decoration: none; padding-right: 1em; } .errorFooter a:hover, .errorFooter a:active { text-decoration: underline; } #placeholder, #react-root { display: none !important; } body { background-color: #FFF !important; }

JavaScript is not available.

We’ve detected that JavaScript is disabled in this browser. Please enable JavaScript or switch to a supported browser to continue using twitter.com. You can see a list of supported browsers in our Help Center.

Terms of Service Privacy Policy Cookie Policy Imprint Ads info © 2023 Twitter, Inc.

Conversation

Phil (SubStack link in bio) Plait

This video is so amazing. Incredible what a few ice crystals in the air can do to sunlight. This site is a go-to for me to look up what all those halos and arcs are. atoptics.co.uk

Quote Tweet

Astronomy Picture Of The Day

Automated

Sun Halo over Sweden: apod.nasa.gov/apod/ap211228. youtube.com/watch?v=2SnbMT

5:41 AM · Dec 28, 2021

Replying to

😍❄️

Replying to

I’ve seen one only once and it was in Las Vegas of all places!! It was amazing. I had no idea what it was until now!

@DarthSarcastus

Replying to

1

Replying to

Stargate!

1

Replying to

I saw a moon halo in Cyprus a month or so ago!!! Had not seen one before so did a massive double take. iPhone photo so please excuse quality!!!

1

2

L. Schramkowski

Replying to

WOW!

@WillFlyforFood

Replying to

I have always heard them referred to as "Sun Dogs"