Stars: they're just like us! (Composed of hydrogen, helium, and carbon.) Nebulae are breathtakingly beautiful star-forming clouds of gas and dust. Pictured here (left to right) are four of the most famous known nebulae images captured by the Spitzer Space Telescope: the Eagle Nebula (which contains the Pillars of Creation), the Omega Nebula, the Trifid Nebula, and the Lagoon Nebula. Nebulae exist in interstellar space - the space between the stars. The closest known nebula to Earth contains the remnants of a dying star – possibly like our Sun, called the Helix Nebula. At approximately 700 light-years away, even if you could travel at the speed of light, it would still take you 700 years to get there! Credit: NASAJPL #Space #Astronomy #Nebulae #SpitzerSpaceTelescope