UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
How it Works
Ask a Question
Search Topics
Our Scientists
Science Links
Contact Information
Is the sky bluer when you look straight up at it or from far away?
Question Date: 2016-01-06
Answer 1:

The blue color is caused by the air scattering light from the sun - higher energy (bluer) light scatters more than lower energy (redder) light, which is why the sky looks blue and the sun yellowish.

There's also dust in the air which is why sunsets look red or yellow. Because there is less air directly above you than at an angle, the sky above you will usually look darker than the sky just above the horizon.

Click Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2020 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use