When the Sun is near the horizon, its light passes through a lot more of the atmosphere to reach the Earth's surface than ...

THE blue color of the sky on a clear day is familiar to all. And yet how many have considered the source of this delicate mantle of azure which Nature spreads over the dome of the heavens?

All-color sky maps Initially signed with Ball Aerospace, which has since been acquired by BAE Systems, the SPHEREx mission will be used to identify targets of interest for follow-up studies in greater ...

How much color should I be able to see in sky objects through a 10-inch telescope? Dennis Holt Concordia, Kansas Unfortunately, when you look at distant galaxies and nebulae, you won't see much ...