Rein says locating a planet in a habitable zone while being able to obtain a good resolution to model the atmosphere will help determine what's on the planet. One example is the recently discovered planet Kepler-186f, which is orbiting an M-dwarf star," says Rein. "As for exoplanets we want to broaden the search and study planets around stars that are cooler and fainter than our own Sun. He points to the recent discovery of a liquid ocean on Enceladus, one of Saturn's larger moons, as a prime example. I think that is the right decision because it will give me and the Serenity Forge team time to properly finish and polish the game. "We should make sure we are looking at the right objects," he says, adding that the search for life within our solar system should remain a priority. Video: IGN Summer of Gaming Trailer for Lifeless Moon The only sad bit of news is that we've decided on an early 2023 release date. Despite the results, Rein is optimistic the search for life on planets outside our own is possible if done the right way. There are 1,774 confirmed exoplanets known to exist, but there could be more than 100 billion planets in the Milky Way Galaxy alone. "We can't get an idea of what the atmosphere is actually like, not with the methods we have at our disposal." While many researchers use modeling to imagine the atmosphere of these planets, they still aren't able to make conclusive observations, says Rein. "This telescope does not exist, and there are no plans to build one any time soon."Ĭurrent methods can estimate the size and temperature of an exoplanet planet in order to determine whether liquid water could exist on the planet's surface, believed to be one of the criteria for a planet hosting the right conditions for life. "A telescope would need to be unrealistically large, something one hundred metres in size and it would have to be built in space," he says. The resolution needed to properly identify a genuine biosignature from a false positive would be impossible to obtain even with telescopes available in the foreseeable future, says Rein. "You wouldn't be able to distinguish between them because they are so far away that you would see both in one spectrum," says Rein. Rein's team discovered that a lifeless planet with a lifeless moon can mimic the same results as a planet with a biosignature. The presence of multiple chemicals such as methane and oxygen in an exoplanet's atmosphere is considered an example of a biosignature, or evidence of past or present life. The study, authored by a team of international researchers led by UTSC Assistant Professor Hanno Rein from the Department of Physical and Environmental Science, finds the method used to detect biosignatures on such planets, known as exoplanets, can produce a false positive result.
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