On Earth, sun rays normally appear red or yellow because the sunlight passes through around 40 times more air than it does when shining directly from above at midday, according to the Met Office.

Indeed, in the cosmic images below you'll glimpse some of the farthest-away views of our humble, ocean-blanketed Earth ever captured by humanity. When we view other objects, worlds, stars, or even ...

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Earth reaches perihelion this morning at 8 A.M. EST, when our planet’s not-quite-circular orbit brings us to our closest point to the Sun for the year. On this day, we are just 91.4 million ...

The Earth's orbit around the Sun isn't quite circular. Earth is at its closest (perihelion) in January furthest (aphelion) on July. With recent temperatures soaring into the mid 90s, you'd expect ...

Among my favorite sky sights at that time are crepuscular rays, or “twilight rays.” You may know them more colloquially as a type of sunbeam, a line of light sent across the sky, sometimes for ...

Venus could make a brief appearance this weekend as it passes between the Earth and the sun. Just be warned: It won't be easy to spot in the sun's glow, according to astronomers.