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Volcanic Smoke Rings from Mount Etna's eruption on April 11th, 2013 ...

when Mount Etna erupted it created amazing smoke rings-toroidal vortices or volcanic smoke rings are rare but well documented

Orion//, sometimes subtitled The Hunter, is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous, and most recognizable constellations in the night sky. Its name refers to Orion, a hunter in Greek mythology.

The Glorious One. One of my favourite constellations to gaze at lying under the stars.

Sun unleashes year's biggest solar flare - Science

Sun unleashes year's biggest solar flare

On April 11 the Sun gave up its strongest solar flare so far in accompanied by a coronal mass ejection (CME) headed toward planet Earth. A false-color composite image in extreme ultraviolet light from the Solar Dynamics Observatory captures the moment.

Reinhold Wittich captured this image of the Pleiades star cluster from his backyard observatory in Geisling, Germany using a 12" f/4 Newton telescope. The image took 780 minutes of total exposure time in October 2010 and was released to SPACE.com April 2013.   (www.wittich.com)

Hot Blue Stars of Pleiades Sisters) Sparkle in the Night Sky

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Beautiful view of a streaking meteor and the Orion constellation above Lake Bumbunga, AustraliaImage copyright: Silveryway on Flickr.

Beautiful view of a streaking meteor and the Orion constellation above Lake Bumbunga, Australia,

Orion is my favorite constellation. And that’s not just because he’s the only one I can find.

Its brightest stars are Beta (Rigel -- leg to our right) and Alpha (Betelgeuse -- shoulder to the left), a blue-white and a red supergiant respectively. This image is helpful to see just how reddish Betelgeuse is.