Planets like 'Tatooine' Could Still Be Habitable

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An artists impression of an exoplanet
Astronomers find even if a planet orbits two stars, it could still harbour life (image credit: NASA).

The first exosolar planet (a planet orbiting a star other than the Sun) was discovered in 1995, and since then humans have found over 3600 planets outside of our solar system. Some of those found are orbiting not one star like we do, but two stars. For example, stars Kepler-35A and 35B orbit each other, but a planet Kepler-35b, orbits both of them. This is much more like the fantasy word Tatooine in the space epic Star Wars than our own planet Earth. In A New Hope, we see young Luke Skywalker watching two stars set on the horizon from his home on Tatooine. Scientists from Germany and California wondered if such system would actually be habitable. Using a model for the planet's atmosphere, they determined that at the right distance, a planet could harbour life around a double star system. That means, in our search for life, we shouldn't discount planets like Tatooine!

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Planets like 'Tatooine' Could Still Be Habitable
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Jesse Rogerson, PhD

As a passionate science communicator, Jesse Rogerson loves promoting science literacy to the public. He frequently represents the Canada Aviation and Space Museum on television and radio, social media, and at conferences. A trained and practicing astrophysicist, Jesse holds a PhD in observational astrophysics from York University, and publishes his research in peer-reviewed journals. Jesse enjoys riding his motorcycle, board games, and ultimate frisbee.