You’ve probably heard the old saying, “Red sky at night, sailor’s delight. Red sky in the morning, sailor’s warning,” but did you know it’s based on real weather wisdom backed by science?

Although Sirius is predominantly a white star, you may also notice it twinkling red, white and blue. When stars appear lower in the night sky, they shine through more of Earth’s atmosphere.

You may have grown up hearing the saying “red sky at night, sailor’s delight, red sky in morning, sailor’s warning” - or maybe a variation of it. CrowdScience listener Alison, who sees ...