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A large ring or circle of light around the sun or moon is called a 22-degree halo by scientists.
Cloud streets are long rows of cumulus clouds oriented parallel to the direction of the wind. Check out these cool images!
Want to brush up on your knowledge about these solar hiccups – CMEs, for short – that can ripple through our solar system and can interrupt satellites and power grids on 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.
One side of the moon always faces Earth. Even so, over time, it’s possible to see as much as 59% of the moon’s surface, due to lunar libration.
Happy birthday June babies! Your month has 3 birthstones – pearl, moonstone, and Alexandrite.
Happy birthday May babies! Your birthstone, the emerald, is a type of beryl colored green by chromium. Perfect emeralds are among the rarest of gemstones.
Happy birthday to all you March babies. Your month has 2 birthstones – the aquamarine and the bloodstone.
Some extremely large and hot stars blaze away with the luminosity of a million suns! But other stars look bright only because they’re near Earth.
During a penumbral eclipse, observant people in the right spot on Earth will look up and notice a dark shading on the moon’s face. Others look and notice nothing at all.
Nowadays, 4 totally eclipsed moons in a row are called Blood Moons. Why? We don’t know for sure, but the answer may lie in a 2013 book by 2 Christian pastors.
From Earth’s North and South Poles, all the stars appear as circumpolar. Meanwhile, at the equator, no star is circumpolar. And what about in between?
How big can stars get? And how do these monster stars get so big?
Uranus lies nearly sideways with respect to the plane of its orbit around the sun. That sideways tilt makes a huge difference between winter-summer on Uranus, and autumn-spring.
Happy birthday January babies! Your birthstone is the garnet.
Lucky New Year’s foods in the U.S. South and around the world. Happy 2017!
One journey of our sun and planets around the center of our Milky Way galaxy is sometimes called a cosmic year. That’s approximately 225-250 million Earth-years.
The Brocken Spectre is your own shadow, cast on mists below you, when you are mountain climbing. The shadow may appear enormous and has a ring around it.
Iridescent clouds – clouds with rainbow colors – happen when especially tiny water droplets or small ice crystals individually scatter light.
It’s sometimes said that, on a worldwide scale, solar eclipses outnumber lunar eclipses by about a three to two margin. True?
Last night’s 1st quarter moon
Moon sweeps near Saturn and Mars September 17 to 19