--- title: "Study: There Could be 6 Billion Earth-Like Planets in Our Galaxy" description: "According to new research, there could be as many as six billion Earth-like planets orbiting distant stars in our galaxy." date: "2020-06-16" modified: "2020-06-17" authors: - name: "Victor Tangermann" job_title: "Senior Editor" link: "https://futurism.com/authors/victor" url: "https://futurism.com/the-byte/6-billion-earth-like-planets-in-our-galaxy" categories: - "Science & Energy" tags: - "Earth-like planet" - "earth-like planets" - "Exoplanets" - "Kepler" - "the digest" --- # Study: There Could be 6 Billion Earth-Like Planets in Our Galaxy ![According to new research, there could be as many as six billion Earth-like planets orbiting distant stars in our galaxy.]() *\Image: NASA\* ## Billions of Earths According to new research, there could be as many as six billion Earth-like planets orbiting stars in our galaxy. "Our Milky Way has as many as 400 billion stars, with seven per cent of them being G-type," Jaymie Matthews, astronomer at the University of British Columbia, and co-author of a [new study]() about the findings in *The Astronomical Journal*, said in [a statement](). "That means less than six billion stars may have Earth-like planets in our Galaxy." By definition, Earth-like planets must be roughly the size of our planet and also be located in the habitable zone of their host star system — the distance at which a planet has the potential to hold liquid water, and therefore life. ## Planet Evolution "Estimating how common different kinds of planets are around different stars can provide important constraints on planet formation and evolution theories, and help optimize future missions dedicated to finding exoplanets," Michelle Kunimoto, and UBC researcher and co-author, said in the statement. Kunimoto and collaborators used an algorithm to compare lists of planets previously detected by NASA's planet-hunting Kepler space telescopes to ones that popped up when populating potential exoplanets orbiting stars found by Kepler. ## Radius Gap The researchers also looked at the "radius gap" of exoplanets, which is the fact that it's unlikely for planets that orbit their star in less than 100 Earth days to be between 1.5 and two times that of Earth. They found that the range of orbital periods represented by the "radius gap" was actually much narrower than previously thought, which could help us fill the gaps in our understanding of how planets evolve over time. **READ MORE:** [As many as six billion Earth-like planets in our galaxy, according to new estimates]() \[University of British Columbia\] **More on exoplanets:** *[NASA Telescope Idea Could Spot Vegetation on Distant Exoplanets]()* ## Author I've been at Futurism since 2017, where my role has evolved to encompass design, writing, and increasingly editing. I've always been fascinated by space exploration and advanced transportation, which I've leaned into by interviewing luminaries in those fields while closely following the dimensions of policy and regulation that allow next-generation projects to succeed -- or, sometimes, to fail. I'm also keenly interested in the effects of generative AI on society, policies, and democratic institutions, as well as clean energy, physics and biology, and the vagaries of tech leadership. My work for Futurism has been cited by publications including Ars Technica, Gizmodo, PC Magazine, Jalopnik, Fox News, and the New York Post. I spent my childhood living in locations including Manila, the Philippines, and Geneva, Switzerland, attended McGill University, and now live in Toronto, Canada. Before Futurism I worked at AskMen and a small photography studio. In my free time, I'm an avid gardener, foodie, and craft beer lover, as well as a maker of artisanal hot pepper sauces. I have a magnificent dog named Freida. ### Author social links [Bluesky]()