irregular moons


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


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

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

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

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


New video on Irregular Galaxies! Enjoy!