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It has also been detected as a trace component in the atmospheres of all four giant planets, and in the atmosphere of Saturn's moon Titan.
It is generally believed that about 3.8 billion years ago, after a period known as the Late Heavy Bombardment, most of the planetesimals within the Solar System had either been ejected from the Solar System entirely, into distant eccentric orbits such as the Oort cloud, or had collided with larger objects due to the regular gravitational nudges from the giant planets (particularly Jupiter and Neptune).
These Mini-cons (Jolt, Reverb, Six-Speed and Safeguard) were apparently among a group of Mini-cons that were companions of the Transformers that migrated with a Cyber Planet Key to the Giant Planet, Gigantion, which was blown into another universe due to a rift in space.