In the end of Infinity Gauntlet (1991) comic series, Thanos detonated a thermonuclear bomb present in his belt.
But, we later learned that he had actually tried to fool others and was perfectly okay.
How did he survive such explosion? Is his body really that strong (I doubt it because even his Titan brother who knows him better believed that he got killed by the explosion)? Or, did he use other methods like teleportation to survive?