{"id":72102,"date":"2024-05-04T13:23:49","date_gmt":"2024-05-04T13:23:49","guid":{"rendered":"https:\/\/www.africa-press.net\/rwanda\/all-news\/our-solar-system-may-contain-over-100-trillion-interstellar-guests-far-more-than-believed-earlier"},"modified":"2024-05-04T14:19:23","modified_gmt":"2024-05-04T14:19:23","slug":"our-solar-system-may-contain-over-100-trillion-interstellar-guests-far-more-than-believed-earlier","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/rwanda\/all-news\/our-solar-system-may-contain-over-100-trillion-interstellar-guests-far-more-than-believed-earlier","title":{"rendered":"Our Solar System May Contain Over 100 Trillion Interstellar Guests, Far More Than Believed Earlier"},"content":{"rendered":"

Africa-Press – Rwanda. <\/strong><\/span>The Oort cloud is a hypothetical spherical cluster that encircles the most distant frontiers of our solar system. The existence of the Oort cloud is regarded as the most likely source for long-period comets, among which could be celestial bodies that came from much more distant areas \u2013 the interstellar medium within our galaxy.<\/p>\n

The number of objects in the Oort cloud tha arrived from outside of our solar system is thought to be greater than the number of objects originally belonging to our solar system, according to a study by scientists from Harvard\u2019s Smithsonian Astrophysical Observatory, published in the \u201cMonthly Notices of the Royal Astronomical Society: Letters.\u201d<\/p>\n

According to calculations made by astronomers Amir Siraj and Avi Loeb, the Oort cloud may contain 100 trillion interstellar objects, although popular theory surrounding the formation of planetary systems suggests that there should be fewer \u201calien\u201d objects than celestial bodies originally located in the Oort cloud.<\/p>\n

Interstellar objects are extremely difficult to detect as they do not emit light on their own. Astronomers can observe them only if occlude background objects, pass through our solar system near the Sun, or separate from the Oort cloud and move in a highly-elongated hyperbolic orbit unrelated to our star’s gravity.<\/p>\n

So far, there have been only two interstellar objects recorded; the \u02bbOumuamua asteroid, found in 2017, and the 2I\/Borisov comet, discovered in 2019. As the existence of distant objects, such as the Oort cloud itself, is yet to be proven, calculations that astronomers are making suggest significant inaccuracies.<\/p>\n

\u201cLet’s say I watch a mile-long stretch of railroad for a day and observe one car cross it. I can say that, on that day, the observed rate of cars crossing the section of railroad was one per day per mile,\u201d Siraj told the Daily Mail. \u201cBut if I have a reason to believe that the observation was not a one-off event\u2014say, by noticing a pair of crossing gates built for cars\u2014then I can take it a step further and begin to make statistical conclusions about the overall rate of cars crossing that stretch of railroad.\u201d<\/p>\n

Scientists also note that the inner regions of the solar system are also filled with interstellar objects, but humans are unable to identify them because we lack the technology.<\/p>\n

\u201cThe abundances of interstellar and Oort cloud objects are comparable closer to the Sun than Saturn,\u201d Siraj explained. \u201cWe think they are asteroids, then we lose them without doing a detailed look.\u201d<\/p>\n

Scientists believe that when the new Earth-based Vera C. Rubin Observatory goes online 2022, it will help to identify these numerous interstellar guests.<\/p>\n\r\n