There’s a dying star zipping through our universe shedding its matter
Mira exists 200-400 light years away from Earth in the constellation Cetus. It actually consists of two stars, the red giant Mira A and the white dwarf Mira B. Both combine to create a dying star. Mira is also a variable star, which means that it's surface oscillates increasing and decreasing it's brightness.
Mira is moving through space at an extremely quick speed–291,000 miles per hour to be exact. NASA's Galaxy Evolution Explorer has done studies of Mira and found that the star is leaving a trail of matter behind it as it goes. This tail of matter is 13 light years in length.