Since the average person isnât making less than $20,000 per year (which they would be if $3,150 were two monthsâ salary), itâs clear that grandmaâs rule no longer holds. Weâre not saying that you shouldnât buy an engagement ring, but we also donât think itâs wrong to play with conventions every once in a while.
The pinkish-red color of nebulae, such as M42 in Orion or the Lagoon Nebula in Sagittarius, is really a combination of four different bright spectral lines of hydrogen gas. A hydrogen atom has a single proton at its center and a single electron in its outer region.
The Carina Nebula, a large, bright emission nebula. Image Credit: ESO. The Carina Nebula (also known as NGC 3372, the Great Nebula in Carina and the Eta Carinae Nebula) is a large, bright emission nebula of about 260 light-years across, located roughly 7,500 light-years away from Earth in the CarinaâSagittarius Arm of our Milky Way Galaxy, in the southern constellation of Carina (the Keel).