A light year is an incredible 9.5 trillion km! Bite-sized, mind blowing space facts about the Universe and the cosmos. Whether you're new to astronomy / astrophysics or not, check us out @ https://www.instagram.com/thespacekiosk/ Image: NASA
Nebula N159 spans over 150 light-years and is located in the neighboring Large Magellanic Cloud galaxy, about 170,000 light years away. Visible in the above picture are bright newborn stars, dark filaments of dust, and red-glowing hydrogen gas. Torrential stellar winds from hot, newborn, massive stars within the nebula sculpt ridges, arcs, and filaments in the vast cloud, which is over 150 light-years across.
Located 500 million light-years away in the constellation Sculptor, the galaxy looks like a wagon wheel. The galaxy's nucleus is the bright object in the center of the image; the spoke-like structures are wisps of material connecting the nucleus to the outer ring of young stars. The galaxy's unusual configuration was created by a nearly head-on collision with a smaller galaxy about 200 million years ago.
This planetary nebula, Mz3, is being cast off by a star similar to our Sun. The 1000-kilometer per second speed of the expelled gas, the light-year long length of the structure, and the magnetism of the star visible at the nebula's center, all imply Mz3 is hiding a second, dimmer star that orbits close in to the bright star. A competing hypothesis holds that the central star's own spin and magnetic field are channeling the gas. (ESA, NASA's Hubble, JPL-CalTech)