irregular moons

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New video on Irregular Galaxies! Enjoy!

Diamond Rings and Baily s Beads : Near the March 20 equinox the cold clear sky over Longyearbyen, Norway, planet Earth held an engaging sight, a total eclipse of the Sun. The New Moon’s silhouette at stages just before and after the three minute long total phase seems to sprout glistening diamonds and bright beads in this time lapse composite of the geocentric celestial event. The last and first glimpses of the solar disk with the lunar limb surrounded by the glow of the Sun’s inner corona give the impression of a diamond ring in the sky. At the boundaries of totality, sunlight streaming through valleys in the irregular terrain along the Moon’s edge, produces an effect known as Baily’s Beads, named after English astronomer Francis Baily who championed an explanation for the phenomenon in 1836. This sharp composition also shows off the array of pinkish solar prominences lofted above the edge of the eclipsed Sun. via NASA

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The First Irregular Moon Discovered on this Day!

On September 19, 1848, astronomers William Cranch Bond, George Phillips Bond and William Lassell discovered the first non-sperical, irregular moon orbiting the planet Saturn, which they named Hyperion (Ὑπερίων) after the Greek god/titan who was the brother of Cronus (the Greek equivalent of Saturn). Looking like a giant potato in the sky, Hyperion is the second largest non-sperical satellite discovered, measuring 360.2×266×205.4 km. Lassell and Bond both observed Hyperion independently of each other only days apart, and only a year after William Herschel had published Results of Astronomical Observations made at the Cape of Good Hope in which he suggested the name scheme for the first seven moons of Saturn, and which Lassell and Bond used when they proposed Hyperion.

Images of Hyperion courtesy NASA/Cassini

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New video on the Hubble Sequence! Had a lot of fun making this one, enjoy!

Tumblr Clan and Nation Leaders

United sanctuary:
Nation leader - lightseeker-yuki
Royal Paladin - lightseeker-yuki
Oracle Think Tank -
Shadow paladin - colorfulnitemare
Gold paladin - divergent-vanguard
Genesis - tsukuyomi-chan
Angel feather - version109

Dragon Empire:
Nation leader - dragonicvanguard
Kagero - dragonicvanguard
Narukami - narukamitoshiki
Tachikaze - chaos-axel
Murakumo - stealthrogue
Nubatama - my-name-is-superkip

Dark Zone:
Nation leader - 
Dark Irregulars - 
Pale Moon -  zheawesomecat
Spike brothers - blackthornsbramble
Gear Chronicle - enaki

Magallanica:
Nation Leader -  hayaakira
Aqua force - hayaakira
Granblue - captainnightstorm-vgrp
Bermuda triangle - codearkada

Zoo:
Nation Leader - 
Neo Nectar - yuaikai
Great Nature - colorfulnitemare if he loses for shadow paladin
Megacolony - turtlecannons

Star Gate:
Nation Leader - cardfighterculture
Link Joker - animeisparadoxical 
Nove grappler - katsuragikamui or zerogman
Dimension Police - cardfighterculture