Recent research suggests that alien dinosaurs could exist on other planets, and should be considered in the search for extraterrestrial life. The study points out that oxygen levels during the dinosaur era were much higher than they are now, which likely contributed to the gigantic sizes of many prehistoric creatures. The researchers argue that in the search for planets capable of harboring life, we should look for signs of a Phanerozoic stage, which encompasses the time when complex animal and plant life proliferated on Earth. The study has been published in Monthly Notices of the Royal Astronomical Society. In the grand scheme of Earth’s biological history, modern civilizations represent just a tiny fraction, and the evolutionary processes on other planets could be similarly lengthy. The researchers suggest examining planets with similar oxygen levels and other “extinct” compounds to enhance our chances of discovering planets capable of harboring life. Lead author Rebecca Payne explains that faint chemical signatures from the Phanerozoic period could indicate more advanced forms of life than single-celled organisms, and suggests that there may be other dinosaurs waiting to be found elsewhere in the cosmos. Despite our self-proclaimed sophistication, we have only managed to launch objects into space in the past 60-70 years, a mere fraction of the 3.7 billion years of life on Earth.
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