SPACE (KXAN) — A star flying through the night sky may be the fastest-moving solar system in our galaxy. Possibly a planet a little larger than Neptune orbiting a small star, the system could be moving at least 1.2 million miles per hour, according to NASA.

First discovered in 2011, the system was included in a research project led by Sean Terry with the University of Maryland, College Park, and NASA’s Goddard Space Flight Center. Terry’s paper on the star was published in February in The Astronomical Journal.

“We think this is a so-called super-Neptune world orbiting a low-mass star at a distance that would lie between the orbits of Venus and Earth if it were in our solar system,” Terry said in a press release from NASA.