Tau Ceti may have one or two habitable planets. Tau Ceti is only 12 light years away (70 Trillion miles) and is the second nearest star that closely resembles our own sun. Recently, the closest star to resemble our Sun in the Alpha Centauri system was found to have an Earth sized planet. Tau Ceti is slightly smaller, cooler, and less bright than our own Sun, which means that the habitable zone is closer to Tau Ceti. The two planets that could be habitable are Tau Ceti e and f, with e being at the near edge of the habitable zone and f being at the outer edge of the habitable zone. The discovery of yet another star that is similar to the Sun having planets in the habitable zone reinforces our chances of ultimately finding another planet to settle that is like our own.
metallicity than our own system. Lower metallicity means that the original gas cloud that the system formed from contained less heavy elements like Iron, Nickel, Lead, and Uranium and more light elements like Hydrogen, Helium, Oxygen, and Carbon. This lower metallicity could mean both lower density of planets and a greater abundance of water. The age of Tau Ceti is 5.8 Billion years, which is about 1.3 Billion years older than our own sun. Hopefully, this means that the early bombardment of planets by comets and asteroids is over and everything has reached some sort of stable equilibrium.
854 confirmed planets, with many more unconfirmed planets needing only more data for confirmation. Not all of these planets are in the habitable zone of the star, yet recent discoveries finding water on the Moon and Mercury could provide many places we could live that aren’t in the habitable zone as long as we have the help of technology. Tau Ceti is the closest system discovered that could have habitable planets and that could one day mean that we could colonize it. Even so, we have a long way to go with establishing colonies in our own solar system and learning to travel the vast distances between stars in a reasonable amount of time.