Update: Last day to take advantage of this offer.
Epic Games is offering
Terraforming Mars (PC Digital Download) for
Free when you click on the '
Get' icon.
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AmusedWeather3114 for finding this deal.
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About this title:
- Single Player, Multiplayer
- Genre: Turn-Based Strategy
- The taming of the Red Planet has begun! Corporations are competing to transform Mars into a habitable planet by spending vast resources and using innovative technology to raise temperature, create a breathable atmosphere, and make oceans of water.
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This is the PC implementation of the Terraforming Mars board game.
The board game is Ranked top 6 board games out of all time at BGG : https://boardgamegeek.c
One of my all time favorite board games personally
The PC version is a good direct translation of the board game to PC.
This is the base game without expansions.
THey do have seperate DLC for the Prelude and one coming for Elysium & Helllas.
You can play local with friends (pass/play), vs AI, true 1 player solo rules or there are online games too.
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If you like digital card games, you may like this...if you're like me and enjoyed Surviving Mars, you may not as I didn't even make it through the tutorial before being bored, heh. Maybe it's just my ADD acting up again....
Oh, and its in the 70's for the claim of humans to land on moon.
- geostationary transfer orbit is about 2.5 km/s. (That's an orbit which touches LEO at one end, and geostationary orbit at the other. Putting it in a circular geostationary orbit requires an extra 1.5 km/s, so about 4 km/s total from LEO. Geostationary orbit is where our communications satellites go.)
- reaching the Moon is about 3.1 km/s. (Landing on the Moon requires an additional 2.5 km/s.)
- reaching Mars requires about 3.6 km/s. (Landing on Mars requires another 5.4 km/s, but you can get most of that for free by aerobraking. However, you do have to pay for it if you launch from Mars, which is why most everything we've sent there so far has been one-way.)
- Jupiter is about 6.3 km/s.
- Saturn is about 7.3 km/s.
- Uranus is about 8 km/s.
- Neptune is about 8.25 km/s.
- leaving the solar system is about 8.75 km/s.
So it actually costs less delta-v to reach Mars, than to put a satellite into geostationary orbit, or to land on the Moon. It just takes longer to get to Mars, and you need better communications due to the greater distance. If you believe that we have communications satellites, then you also believe we can reach Mars, and that we have at least 90% the capability to land on the Moon.Even without gravity assists, it costs less delta-v to get anywhere in the outer solar system (or to land on the Moon), than to reach LEO from the Earth's surface. In other words, if you take a rocket designed to reach LEO, disassemble it (and its fuel), launch it piece by piece into LEO, and assemble it there, that rocket can travel directly to any planet in the outer solar system, land on the moon (and get most of the way back to Earth), or even leave the solar system. Using gravity assists allows us to reach these other planets using even less rocket.
Going the other way (towards the sun) is actually harder. Mercury is the hardest planet to put something in orbit around (5.6 km/s delta-v needed to intersect its orbit, about 6.5-7.5 km/s more to match its speed around the Sun so you can orbit it). That's why we've only sent 3 spacecraft there. Living on Earth gives you a misguided sense that going "down" is easier than "up" - due to friction, the extra speed you pick up when going down can be dissipated for free on Earth. In space, there's no friction, so you have to pay with extra fuel if you want to match speeds with your surroundings at the end of your "down" trip.
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https://www.space.com/apollo-11-m...evers.html
/signing off the thread
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