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IC 443 (also known as the Jellyfish Nebula and Sharpless 248 ) is a galactic supernova remnant (SNR) in the constellation Gemini. On the plane of the sky, it is located near the star Eta Geminorum. Its distance is roughly 5,000 light years from Earth. IC 443 may be the remains of a supernova that occurred 30,000 - 35,000 years ago.
Betelgeuse's color may have changed from yellow (or possibly orange; i.e. a yellow supergiant) to red in the last few thousand years, based on a 2022 review of historical records. This color change combined with the CMD suggest a mass of 14 M ☉ , an age of 14 million year and a distance from 125 to 150 parsecs (~400 to 500 light years).
Light has to pass through a larger part of the atmosphere when the sun is lower on the horizon. Red, orange and yellow have longer wavelengths, which means, in short, they have a better chance of ...
On other space missions, astronauts reported seeing other colors such as yellow and pale green, though rarely. [10] Others instead reported that the flashes were predominantly yellow, while others reported colors such as orange and red, in addition to the most common colors of white and blue. [9]
It was likely formed 30,000 years ago in the supernova that created the supernova remnant IC 443, the "Jellyfish Nebula." [ 2 ] [ 3 ] [ 4 ] It is travelling at approximately 800,000 km/h away from the site.
What makes the nebula bright is not, as it may seem, the star Sadr since it is not related to the molecular complex: although it is a very distant star, located around 1,500 light-years from Earth, it is the foreground compared to the nebulous field.
An example of this phenomenon is when clean air scatters blue light more than red light, and so the midday sky appears blue (apart from the area around the Sun which appears white because the light is not scattered as much). The optical window is also referred to as the "visible window" because it overlaps the human visible response spectrum.
A potent weather system in Europe pulled Saharan dust up from the desert into Libya and Greece late Tuesday, turning skies red and orange. Famous spots in Athens, like the Acropolis, were shrouded ...