As gas falls into the young protostar, it creates shocks on its surface that radiate energy. The colour is also representative of the temperature in the ionised gas: blue is relatively hot and red. Instead, its light comes from radiation surface shocks. This image shows a ground-based 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 sulphur (red). As a protostar, it hasn’t gathered enough mass to trigger the nuclear fusion that takes place in older stars. HD 97300 is a young, massive star that hasn’t entered the Main Sequence yet. The NGC 1999 nebula is illuminated by a bright, recently formed star, visible in the Hubble photo just to the left of center. A star named HD 97300 provides the light. Hubble Reflected Starlight Bathes Forming Star in New Hubble Image This NASA Hubble Space Telescope image captures a portion of the reflection nebula IC 2631 that contains a protostar, the hot, dense core of a forming star that is accumulating gas and dust. IC 2631 is a reflection nebula about 500 light-years away in a giant star-forming region called the Chamaeleon Cloud Complex. Stapelfeldt (Jet Propulsion Laboratory), and ESO Processing Gladys Kober (NASA/Catholic University of America) These objects clearly resemble reflection nebulae, and the combination of star and nebula easily fit into the scatter defining the revised Hubble relation. A nebula starts with a cloud of interstellar dust. NASA Shares Classic Hubble Image Featuring Stunning Reflection Nebula 380 Light-yrs Away NASA says that picture depicts the reflection nebula IC 349, which lies in the constellation Taurus and at a distance of about 380 light-years away from Earth. Hubble observed a small part of IC2631 in a survey looking at the disks of newly-formed stars. While searching for young stars and their circumstellar disks, Hubble captured a classic reflection nebula. In 1912, American astronomer Vesto Slipher understood that light from a nearby star lights nebulae up rather than some intrinsic characteristic of the nebula itself. They even called galaxies nebulae.Īs time went on and telescopes and observations improved, they figured more things out. The word nebula means ‘cloud’ or ‘fog’ in Latin, so early astronomers called anything that appeared cloud-like a nebula. In the early days of astronomy, astronomers weren’t certain what they saw when they spotted a nebula.
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