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Isaac Arthur
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Pushing Ice & Moving Comets
7.2K views
The Medusa Starship Drive
40K views
Non-Equatorial Orbital Rings
10K views
Equatorial Space Launchers
19K views
Journey Into The Future With SFIA!
5.1K views
How Old Are The Canals On Mars?
14K views
Chandelier Cities
21K views
What is a 'Hubble Volume'?
15K views
Hammer Habitats
72K views
Are Brown Dwarfs Stars or Planets?
15K views
When Will Most Cars Be Self Driving?
12K views
Mushroom Habitats On Mercury
26K views
Bubble Planets & Ederworlds
19K views
Clarke Orbital Habitat Rings
20K views
Grey Goo
19K views
What is the Goldilocks Zone?
9K views
Sentience vs Sapience
14K views
Solar Shades for Venus
28K views
Neutron Star Collisions #space
14K views
Cometary Oceans For Mars
13K views
Pulsed Nuclear Spacecraft
17K views
Orbital Lasers
18K views
Alien Soil #space #spacecolonization
11K views
Too Late To Hide In The Dark Forest
36K views
Martian Solar Mirrors
12K views
What is a Zombie Star?
14K views
Can The Moon Keep An Atmosphere?
25K views
Necrosignatures
15K views
Banks Orbital - God's Bracelet
29K views
Bishop Ring Space Habitat
18K views
Snowball Earth
13K views
McKendree Cylinder Space Habitat
16K views
Mysterious Cosmic Explosion
13K views
Alderson Disks
32K views
Antimatter Rifles
23K views
China Brain Hive Minds
18K views