A small planet, just a bit bigger than Earth, has been spotted in our stellar neighborhood, just 39 light-years away.

Known
as GJ 1132b, it is the closest rocky exoplanet to have ever been found,
and astronomers say it could provide our most in-depth look yet at an
alien world not so different than our own.
Drake Deming, an
astronomer at the University of Maryland, was so excited about the
findings, published this week in Nature, that he described the new world
as "arguably the most important planet ever found outside the solar
system" in an accompanying News and Views article.
The newly
discovered planet is just 16 percent larger than Earth, and it is made
of rock and metal like our own planet. However, scientists say it is not
likely to host life as we know it.
Its small, dim, sun is just
one-fifth the size of our own sun, but GJ 1132b circles it at a distance
of just 1.4 million miles, completing a full orbit once every 1.6 Earth
days. (For perspective, Mercury orbits the sun from a distance of 36
million miles.)
The exoplanet's close proximity to its host star
keeps its temperature at a broiling 500 degrees Fahrenheit — or about as
hot as the highest setting on your home oven, said Zachory
Berta-Thompson, a post-doc at the Massachusetts Institute of
Technology's Kavli Institute for Astrophysics and Space Research.