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Earth’s north star – Polaris – is located nearly directly above Earth’s north pole. There’s a star above Mars’ north pole, too, but it’s very faint.
Iridescent clouds – clouds with rainbow colors – happen when especially tiny water droplets or small ice crystals individually scatter light.
You’ve no doubt heard star names such as Polaris or Betelgeuse. But what about our star? Does the sun have a name, and if so what is it?
Star travel via conventional propulsion and warp drives, plus a $100 million investment in proof-of-concept studies for an all-new way to get to the stars.
Red rainbows happen when the sun is on the horizon. They’re created in much the same process that causes a sunset or sunrise to look red.
As Earth spins under the sky, the stars appear to move. When a camera captures that movement, that’s called a star trail. Plus … an astrophotographer explains how he does it.
A rainbow isn’t a flat two-dimensional image on the dome of sky. It’s more like a mosaic, composed of many separate bits … in three dimensions.
That glow over the unlit part of a crescent moon – called earthshine – is light reflected from Earth.
Sun pillars, or light pillars, are shafts of light extending from the sun or other bright light source. They’re caused by ice crystals drifting in Earth’s air.
What are the Ides of March? We in modern times probably wouldn’t know, if it weren’t for William Shakespeare.
Visualize the sun’s path through Milky Way
Moon, Jupiter, Jupiter’s moons