When a star ends up in an explosion, the debris of that star spills over, making it often difficult for astronomers to determine the timeline of the star’s demise from the debris. How any star will end depends on its mass, when a star reaches a critical mass, then it draws matter from another star, or merges with another white dwarf. During this time, the star undergoes a thermonuclear explosion, scientists study a wide range from thermonuclear explosions to measuring the distances of galaxies to billions of light-years, known as Type Ia.
Astronomers have studied the spectacular remnants of a supernova in a neighboring galaxy using NASA telescopes, a study that gives astronomers enough clues to understand the lifelines of exploded stars. Seen in a neighboring galaxy, the remnants of a supernova called SNR 0519-69.0 (SNR 0519 for short) are the debris from the explosion of a white dwarf star, which is spread nearby, SNR 0519 160,000 from Earth Light years away is a small galaxy located in the Large Magellanic Cloud.
Combined image X-ray data from NASA’s Chandra X-ray Observatory and optical data from NASA’s Hubble Space Telescope According to SNR 0519, low, medium and high-energy X-rays are shown in green, blue and purple, respectively, and some of these colors overlapping to appear white. Astronomers combined data from Chandra, Hubble and NASA’s retired Spitzer Space Telescope to determine how long ago the star in SNR 0519 exploded, helping astronomers understand when stellar evolution began and will be able to gather more information about the supernova’s atmosphere.
Astronomers measured the speed of material in the blast wave to determine the exact time of the star’s demise miles (9 million kilometers) per hour. Astronomers estimated that if the speed was toward the upper end of those predicted speeds, the light from the explosion would have reached Earth about 670 years ago, at the time of the Hundred Years War between England and France.
Astronomers observed the brightest region in the remnant’s X-rays, where the material is slowest moving, it is likely that the material has slowed down since the initial explosion, which astronomers believe, Happened as recently as 670 years ago. Chandra and Spitzer data provide clues the blast wave may have crashed into the dense gas around the remnant, causing the material to slow down, but astronomers can determine, with the help of additional observations with Hubble, that When should be the exact time of death of the star?