Scientists have announced the discovery of two new Earth-like planets in our own galaxy that are so similar to ours that they have already risen to the top 20 candidates for future human colonization.
The planets orbit around a neighboring star, Teegarden, which is only 12.5 light-years distant in the constellation Aries. Teegarden is an ultra-cool dwarf star that is ten times lighter than our own, eight billion years old, and was discovered in 2003.
"The two planets resemble the inner planets of our solar system," explains Mathias Zechmeister, astrophysicist at the University of Göttingen and lead author of a discovery study.
"They are only slightly heavier than the earth and are located in the so-called residential zone, in which water can be in liquid form.
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On 4 nearby exoplanets, NOW could develop an alien life to 50 degrees Celsius, with a probable average temperature of mild 28 degrees. Due to its mass and minimal exposure to radiation, Teegarden b, which completed its orbit in just 4.9 days on Earth, has the highest Earth Equalization Index (ESI) ever achieved.
Teegarden c would be closer to the temperament of Mars, with a probable surface temperature of -47 degrees Celsius, so potential colonists would like to bring a heavy jacket and some thick gloves. The exoplanet completes its orbit in 1
"Both planets have a minimum mass near Earth's mass and [sic] a rocky, partially ferruginous or hydrous composition," the team wrote in its findings.
Do not pack your bags yet as further research is needed to determine how viable the future colonization of these exoplanets by humans could be. One of the main concerns is how fast they orbit their rather dim star, which can make life miserable or impossible there.
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