Astronomers have discovered a world 11 light-years away that may have a surface temperature similar to Earth's. The planet, Ross 128 b, is Earth-sized and is now the second-closest to Earth in temperature. The closest is Proxima b, located around Proxima Centauri, 4.2 light-years from Earth. Both planets orbit red dwarf stars, but what makes this new one somewhat more intriguing to astronomers is that its host star, Ross 128, is a relatively inactive red dwarf. Red dwarfs are the most common types of stars in our universe. They are old but tend to be very active, with ultraviolet and X-ray flares showering nearby planets, potentially stripping them of any atmosphere. This reduces any chance of habitability, which is believed to be the case with Proxima b. But that may not be the case for Ross 128 b. Because the star is relatively quiet, it doesn't emit those deadly flares. It is the closest temperate world orbiting a star so quiet. While the exact age of the star isn't known, the team