The Future of The Milky Way 8/11

Cosmic Train Wreck: Predicting the Collision of the Milky Way and Andromeda Galaxies

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Howto & Style

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• Space
• Galaxy
• Stars
• Future
• Milky
• Way
• Suns
• Outer
• Universe
• Science
• Astronomy
• Physics

[nepatriots77]

This is awesome vid!

You guys are all weird for arguing.

Why would you guys even reply to them!?

Im just going to watch and enjoy and learn.

[tajbehem]

What will the earth look like 5 billion years from now?

As the Sun ages, and becomes a red giant. It will swallow Mercury, Venus and the Earth.

Probabbly, the outer planets become habitable, then.

[Atmospheresdot5u]

The timeline for the collision/merger with the Andromeda has been bumped up significantly from an initial 7 billion years, to 5 billion, and now stands at 3 billion years. The merger itself will take place over 100 million years. But, life on Earth will extinguish in about 500 million to

1 billion years, when all the water in the oceans will have evaporated--lost to space forever--and temperatures will be at 150 degrees F, or hotter.

[Atmospheresdot5u]

@DeuteriumDrones - Wouldn't Uranium 238 be better? It has a half life of 4.468 billion years! That means if we rekindle Mars' geodynamo by throwing in U238, it'll last until the Sun dies out. U238 also creates the much needed "convection" you mention.

[DeuteriumDrones]

There will be 2 super-massive black holes in the newly merged galaxy....yikes!

[DeuteriumDrones]

After we terraform Mars and all of the moons in our Solar System, we must build underground shelters/cities in preparation for the collision/merger. Apparently, after we merge with Andromeda, there are other collisions in store for us: "as we move towards the Virgo super-cluster, even more titanic collisions are in store". We should then terraform any of the planetesimals which we INHERIT from Andromeda.

[DeuteriumDrones]

Use liquid cryogens to create atmospheric pressure on all Moons since they expand rapidly once they warm up--the expansion ratio of LOX (liquid oxygen) is 861:1 at 68 °F (20 °C). And, one litre of Liquid Nitrogen will expand to 700 litres of nitrogen gas at STP. [1] This process must take place at least a year in advance, since all sorts of atmospheric phenomena (violent thunder, lightning, hail, etc.) will occur before it settles down into a viable atmosphere suitable for living creatures.

[DeuteriumDrones]

On moons/planetesimals which do not spin on their axis, but are tidally locked to their parent planet--such as our Moon--Superconducting Magnets can be imbedded into the mantle 4000' deep to generate "global" magnetic fields. The magnetic field near the Earth's core is 10 Tesla, while on the surface of Earth, it's only 2.5 gauss, due to the Inverse Cube rule which magnetism follows.

[DeuteriumDrones]

Geodynamos will only work on planets which spin on their axis, like Mars. There are 3 requirements for a Geodynamo: 1) Molten ferromagnetic metals, especially iron/nickel/cobalt; 2) Rotation; and 3) Convection. Some radioactive element such as Thorium, Cobalt 60 or Radium would also be necessary. Eddy currents arise from the spinning molten metals (caused by the spinning motion of the planet--the Coriolis Effect), which generates and perpetuates the Earth's "global" magnetic field.

[DeuteriumDrones]

To make water, synthesize propane using a Fischer Tropsch Reactor. Burning propane/butane in the presence of oxygen (grass/ivy inside a dome) will produce water vapor and CO2. Condense the water vapor using Dehumidifiers. Fill craters with water, iron sulfate, seaweed and Coccolithophores to generate Oxygen thru photosynthesis. For more ideas, read the FAQ at atmospheres dot 5u.

[DeuteriumDrones]

To survive on any of the 170 moons in our Milky Way Galaxy, we will need a Cryogen-free Superconducting Magnet that can ramp up from 3 to 14 Tesla; a Super Pulsed Fiber Laser to burn a path towards the core of a Moon, then use a steel cable to gently drop it the magnet in and turn it on via remote control. This will create a "global magnetic field", which will deflect cosmic rays and protect any water from being photodissociated by solar uv rays. To make water, synthesize propane using

[FrakCast]

Dont worry some other advanced civilization will save us.