had Superman's abilities even on their own planet. The planet is seen only from a distance, just before its explosion. Depictions of Krypton on both The New Adventures of Superman and Super Friends; in one of the "lost episodes" of Super Friends season of 1983–1984), "The Krypton Syndrome" Jor-El says that Krypton will be enveloped by their sun and explode a short time later. In Superman: The Animated Series, "The Last Son of Krypton", Krypton's climate is shown to have both temperate and Arctic conditions. According to commentary on the DVD collection of the show's first season, part of Krypton's appearance was influenced by the artistic style of American comic book artist Jack Kirby. This version depicted Brainiac as responsible via inaction for the destruction of Krypton's people (though not the planet itself). Brainiac was the planet's essential A.I. system, responsible for maintaining Krypton's data stores and advising the ruling Kryptonian elders. After Jor-El delivered his findings to him, Brainiac discovered that Jor-El's theories were correct; the planet's core was destablizing and it would explode after several weeks of intense seismic activity. Brainiac knew that if the Kryptonian elders learned of the immanent disaster, he would be tasked with formulating an evacuation plan. However, given the extremely little time Krypton had left, he believed that any personal evacuation was pointless, and it would leave himself with no time to escape. As a result, he lied to the elders that Jor-El was mistaken and that the quakes were the result of a polar shift that would soon abate, discrediting Jor-El and his theroies. Shortly after, Brainiac secretly uploaded himself and all of Krypton's culture and knowledge onto a satellite, jettisoning him out of Krypton's orbit before the planet's destruction, while the rest of Kryptonian civilization (save for Jor-El and his family) remained unaware of the grave danger they were in until it was too late to evacuate. Krypton had a "sister planet" named Argo (named after Argo City), colonized by Kryptonians many centuries before the destruction of Krypton. Its people had a greater resistance to kryptonite under a yellow sun. On a journey into space, Superman found that the explosion of Krypton pushed the planet from its orbit away from its sun, causing the planet to gradually cool. Its people went into cryostasis to survive, but an accident left Supergirl the only survivor. The remains of Krypton settled into an asteroid