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Message: <blockquote data-quote="Malanath" data-source="post: 2342838" data-attributes="member: 25538">Thanks for your replies guys.  It's been a great help, especially the replies about how gravity works.  The world I am creating is loosely based around Norse Mythology and the ensuing event that they called Ragnarok.  It is basically a "this is what happened afterward" type post-apocalyptic world about 3,000 to 5,000 years later.I wanted things to seem some what believable so I looked to hugely destructive events in nature that could (in theory to the non-educated) produce 'end of the world' type effects.  I came upon the Super Volcano and began reading up on it, and it seemed to be the best fit for destruction on a global scale.  In regards to the planet's rings and comparative to the moon being blasted into space.... I believe I read some theories that have the moon coming from the Earth in it's very early days.  (Like when the solar system was still young and the planets were still under constant bombardment from huge asteroids and other debris.)  So I know it's possible, in some theories at least, to get that much stuff into space from an Earth like planet... although I seriously doubt there would be any survivors on the planet if it were caused by an asteroid or comet...  Anyway here is how the fictional world of Midgard and its Moon called Hecate look:Midgard is roughly 25% larger than Earth with a slightly more severe axial tilt.  The axial tilt is a few degrees different than Earth's around 25 or 26 degrees, comparative to the Earth's 23 degrees.  It causes more pronounced seasons around the world.  Midgard has roughly 48 Million square miles of surface land comparative to the 38 Million square miles of surface land on Earth.  Gravity is about the same.Hecate is roughly the size of Titan with an atmosphere and with gravity only slightly less than Earth's.  The difference would be noticeable at first but you'd quickly adjust.  The atmosphere is more thick and allows the moon to retain more heat.  The Moon has roughly 10 Million square miles of surface land divided between two small continents; the rest is an ocean, which circles the entire moon.  Hecate is further away from Midgard than our Moon to Earth but they exert roughly the same amount of gravitational force as the Moon does to the Earth, and Earth to the Moon.  Hecate does not revolve around Midgard and does not rotate, causing one side of it's surface to be bathed in light constantly while the other to be constantly bathed in darkness.  There is one continent on each side roughly 5 million square miles each.  The oceans are not as deep as they are on Earth but are suitably deep enough to create a hydrosphere.Around 3,000 to 5,000 years ago there was a large eruption at the prophesied battle of Ragnarok that nearly wiped out all life on Midgard.  The eruption was so large and powerful that it set off a series of events that caused worldwide Earthquakes so powerful that fault lines caused some continents to have huge chunks break off.  Tsunami's ravaged most coastal areas eliminating all life.  Multiple Volcanoes and several Super Volcano's erupted with such force that it expelled enough ash and dust through the atmosphere to create a small thin ring around the planet.  The ash and dust that did not leave the atmosphere blanketed much of the planets surface (only a dusting in some areas), and blocked out the light from the sun so much that nearly 90% of all plant life on the planet went extinct and an Ice Age of epic proportions ensued.  Global temperatures plummeted by nearly 30 to 40 degrees, and most life forms that managed to survive the Ragnarok were killed as a result of the Ice Age.  As most of the planet turned into a giant ice ball traveling between the continents was made easier.  The setting will take place in the Western Hemisphere roughly 3,500 years after the event.  The Western Hemisphere has two continents and an island chain made up of many small islands which together have about 14 Million square miles of land.  Current climate is comparable to the climate found in and around North America.  Current Human Population in this area is roughly between 100 Million to 200 Million.</blockquote>

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