ROSS 128 b is a rocky exoplanet, slightly larger than Earth, located about 11 light-years from Earth. It orbits very close to its star, which could allow it to maintain a temperature high enough for liquid water to exist on its surface. However, other factors, such as the composition of its atmosphere, still need to be studied to determine if it is actually habitable.
In short, ROSS 128 b is a potentially habitable rocky planet located near Earth.