How was Superman able to lift the landmass into space? Why did he pass out and fall to earth?
Knowing that the ever-growing landmass and Lex’s possession of more Kryptonian crystals would (as Lex boasted) be the death of billions of people, Superman knew that, despite the danger to himself, he had to rid the world of the deadly landmass. Relying on willpower, determination, and the extra yellow solar radiation he used to recover from being stabbed with Kryptonite, Superman lifted the landmass out of the water by diving underneath it, below the seabed, putting layers of normal earth rock between him and the deadly kryptonite. However, as he lifted it skyward, chunks of earth fell away, and the landmass continued to grow, exposing the Kryptonite. As the exposed Kryptonite wracked his body with pain and ebbed his powers, Superman used every ounce of his strength, carried the landmass on his shoulders, and with the last of his failing life-force threw it into space.