Earth's new neighbor looks familiar

Planet discovered in Alpha Centauri, just a few light-years away

By Nadia Drake, 14:53 PM December 13, 2012

2012 SCIENCE NEWS TOP 25: 9

For exoplanets, size does matter. That’s why an Earth-sized planet just 4.4 light-years away proved to be one of the most exciting astronomical discoveries of 2012. The planet (artist’s depiction shown) circles a sunlike star in the Alpha Centauri system — the nearest stellar system to Earth and a favored target for future interstellar expeditions.

Finding a rocky planet in the Alpha Centauri system settled a decades-long debate about whether the system’s three...

Source URL: https://www.sciencenews.org/article/earths-new-neighbor-looks-familiar