The Undercover Economist

One of the largest nebulas, the Carina Nebula hosts three other major nebulas within itself. The Carina Nebula (also known as the Grand Nebula , Great Nebula in Carina , or Eta Carinae Nebula ) is a large, complex area of bright and dark nebulosity in the constellation Carina , and is located in the Carina–Sagittarius Arm . The nebula is approximately 8,500 light-years away from Earth . It is one of the biggest nebulas out there. This image shows a view of the giant star-forming region in the southern sky known as the Carina Nebula, combining the light from three different filters tracing emission from oxygen (blue), hydrogen (green), and sulfur (red). The colour is also representative of the temperature in the ionized gas: blue is relatively hot and red is cooler. The Carina Nebula is a good example of how very massive stars rip apart the molecular clouds that give birth to them. The bright star near the centre of the image is eta Carinae, one of the most massive and luminous stars k