![]() The team was able to pinpoint the mass of stars that created the nebula, which shows the central star was nearly three times bigger than the sun at the time. "We think all that gas and dust we see thrown all over the place must have come from that one star, but it was tossed in very specific directions by the companion stars," Joel Kastner, a team member from the Rochester Institute of Technology in New York, said in NASA's press release. The processes of the dying star created red gas forming the nebula, making for what researchers call a "messy death." The Southern Ring Nebula is aging, which is why researchers are interested in how it was created and what is happening. We approached our analysis much like forensic scientists to rebuild the scene. ![]() "With Webb, it’s like we were handed a microscope to examine the universe," De Marco said in NASA's press release."There is so much detail in its images. The discovery was published in Nature Astronomy on Dec. The team behind the research, led by Orsola De Marco of Macquarie University in Sydney, analyzed 10 of NASA's James Webb Telescope images and existing data from the European Space Agency’s Gaia observatory. The Southern Ring Nebula is about 2,000 light-years away from Earth. On Twitter, Facebook, Google News, and Instagram.The central star forming the Southern Ring Nebula is dying, emitting the "messy" red dust that forms its titular rings, and researchers now understand the phenomenon visible through a high-powered telescope is caused by multiple stars, not just one.Ī team of 70 researchers found there were two or more "unseen" stars that created the circular shapes around the nebula.Ī nebula, as described by NASA, is a term for a cloud of dust and gas in space formed from the explosion of a dying star. Low clouds generally form within a kilometer or two of Earth's surface.įollow HT Tech for the latest tech news and reviews, also keep up with us High clouds form several kilometers up in the sky, with the exact height depending on the temperatures where they form. Did you know?Ĭlouds are categorized primarily by two major factors - location and shape, according to NASA. Still sunlit at altitudes of around 15 to 25 kilometers, the clouds can diffract sunlight even after sunset and just before dawn. A type of polar stratospheric cloud, they form when unusually cold temperatures in the usually cloudless lower stratosphere form ice crystals. ![]() But their unforgettable appearance was captured looking south at 69 degrees north latitude at sunset on January 24. Known as nacreous clouds or mother-of-pearl clouds, they are rare. Vivid and lustrous, wafting iridescent waves of color wash across this skyscape from Kilpisjärvi, Finland. Nacreous Clouds are mostly visible within two hours after sunset or before dawn when they shine vividly in the sky with shifting curtains of iridescent colours, similar to the pattern of Northern Lights. They are formed in the lower Stratosphere at an altitude of about 15 KM to 25 KM. Nacreous Clouds are a type of rare Polar Stratospheric Clouds which form when unusually cold temperatures in the usually cloudless lower stratosphere form ice crystals. NASA's Astronomy Picture of the Day is of the stunning Nacreous Clouds visible in Swedish skies. NASA uses satellites in space as well as computers to study clouds on Earth and other planets. Studying clouds helps NASA better understand Earth's weather and climate. Clouds form when an area of air becomes cooler until the water vapor there condenses to liquid form-rain. Although water may evaporate from the ground or change its course to other areas, water vapor is always present in the air in some amount, albeit it is invisible. ![]() Earth has a cycle wherein water originates from and returns to the ground. ![]()
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