Welcome to Green Comet

These free novels, Creative Commons licensed Green Comet, and its sequel Parasite Puppeteers, tell an expansive story of love and adventure on an inhabited comet. To learn more, and for samples, visit the Welcome Page.

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Volutus

Mirostaw – World Meteorological Organization

Cloud of the Day – Volutus

Volutus, from the Latin volutus, which means rolled, is a species of cloud (yes, they actually come in species, and genera too) that the World Meteorological Organization (WMO) recently added to the latest edition if its venerable cloud atlas (2017.) It’s described as

a long, horizontal, tube-shaped cloud mass, often appearing to roll about a horizontal axis. It usually occurs as a single line and seldom extends from horizon to horizon.

This species is usually found in the stratocumulus genera, and more rarely in the altocumulus genera. In either case, volutus is rare.

The more observant among you might notice a resemblance to a previous Green Comet Cloud of the Day: Roll cloud. You would be right. It’s the same cloud, only now the WMO has officially included it in the cloud atlas, and given it a Latin name in keeping with the rest of the clouds. The atlas has to have a consistent naming regimen if it’s to be useful for scientific research.

rjb

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NASA Image and Video Library

You might be aware of the website dedicated to the Astronomy Picture of the Day (APOD.) You can visit the site and see another great picture every day. Some people even set things up so their computer’s desktop image is the APOD changing daily. It’s a NASA website and just one of the ways that organization shares its discoveries with the public. Today I’m going to direct you to another one called the NASA Image and Video Library. They have brought together about sixty of their media archives into one source. Here’s an article on Space.com about the library.

Here are some samples of the images available. They link to the much larger originals. These images are Public Domain.

Let’s start with a spacewalk.

Next the aurora on Jupiter.

The mystery of Saturn.

Here’s one you might recognize: the Helix nebula.

Finally, a bit of space dust.

Happy rummaging.

rjb

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