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BEGIN:VEVENT
DTSTART;VALUE=DATE:20250527
DTEND;VALUE=DATE:20250528
DTSTAMP:20260421T174106
CREATED:20250527T090759Z
LAST-MODIFIED:20250530T091033Z
UID:126119-1748304000-1748390399@www.a3veen.nl
SUMMARY:Very-wide-orbit planets from dynamical instabilities during the stellar birth cluster phase - publication
DESCRIPTION:There could be a ninth planet in our Solar System after all and it’s not Pluto; instead\, it’s the theoretical Planet X\, also called Planet Nine\, a wide-orbit planet that would circle the Sun from far beyond Neptune and Pluto. \nPlanet X has been hypothesized for years\, but how such a planet could have appeared in the outer Solar System has long stumped scientists. The study in Nature Astronomy ‘Very-wide-orbit planets from dynamical instabilities during the stellar birth cluster phase’ reveals a novel theory\, however. The research suggests that wide-orbit planets (such as Planet X) arise in the early evolution of their planetary systems\, when these systems are still inside their stars’ crowded birth clusters. In these tight\, chaotic settings\, stars and their planets are fighting for space\, and sometimes planets are sent flying. \nLinks:\n‘Pinballs in a cosmic arcade’: New study suggests how wide-orbit planets form\, supporting existence of Planet Nine \nChaos in Our Solar System Could’ve Caused Planet X’s Theoretically Wide Orbit
URL:https://www.a3veen.nl/event/very-wide-orbit-planets-from-dynamical-instabilities-during-the-stellar-birth-cluster-phase-publication/
CATEGORIES:Astronomie,Planeet9
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250424
DTEND;VALUE=DATE:20250425
DTSTAMP:20260421T174106
CREATED:20250424T152154Z
LAST-MODIFIED:20250504T155900Z
UID:123841-1745452800-1745539199@www.a3veen.nl
SUMMARY:A Search for Planet Nine with IRAS and AKARI Data - publication
DESCRIPTION:Evidence of controversial Planet 9 uncovered in sky surveys taken 23 years apart\, if the object really is Planet Nine\, it would be larger than Neptune and exist 700 times further from the sun than Earth. \nPhan and Goto used sky surveys from two infrared space telescopes launched 23 years apart: the Infrared Astronomy Satellite (IRAS)\, a NASA-Netherlands-U.K. satellite launched in 1983; and AKARI\, a Japanese satellite launched in 2006. Because of Planet Nine’s long orbit\, the researchers hypothesized that the time gap between the two data sets would be enough to see the potential planet move incrementally across the night sky. From an initial catalog of about 2 million objects within the IRAS and AKARI data sets\, the researchers whittled down to pairs of dots of light whose spacing could be explained by a moving planet with a Planet Nine–like mass and distance. Then\, they removed known sources such as stars\, sources that didn’t move over time\, and sources with too much noise\, such as those near the bright galactic center. When 13 pairs remained\, they checked each by eye. Only one candidate pair survived the scrutiny. The two dots had matching colors and brightnesses—a sign they were the same object. \nLinks:\nAstronomers searching for Planet Nine find possible hints of different planet \nEvidence of controversial Planet 9 uncovered in sky surveys taken 23 years apart
URL:https://www.a3veen.nl/event/a-search-for-planet-nine-with-iras-and-akari-data-publication/
CATEGORIES:Astronomie,Planeet9
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20230825
DTEND;VALUE=DATE:20230826
DTSTAMP:20260421T174106
CREATED:20230907T162436Z
LAST-MODIFIED:20230912T155411Z
UID:94514-1692921600-1693007999@www.a3veen.nl
SUMMARY:Is There an Earth-like Planet in the Distant Kuiper Belt? - publication
DESCRIPTION:The study ‘Is There an Earth-like Planet in the Distant Kuiper Belt?‘ suggests that a thus far undetected Earth-like planet hovering in the Kuiper Belt region could be deviating orbits of Sedna and a handful of similar trans-Neptunian objects (TNOs)\, which are the countless icy bodies orbiting the sun at gigantic distances. \nMany TNOs have oddly inclined and egg-shaped orbits\, possibly due to being tugged at by a hidden planet\, astronomers say. Two Japanese researchers used computer simulations to analyze the effects of such an undiscovered planet on the TNOs. Those simulations\, which included evolutions of numerous real and model TNOs in the furthest reaches of an icy region\, known as the Kuiper Belt\, produced the extreme orbits observed for Sedna and other TNOs. Such a planet would be between 1.5 to three times Earth’s size and would reside somewhere between 37 billion km to 74 billion km from the sun. \nSearching for planets lurking in the frigid edges of our solar system is not a new concept. The so-called Planet Nine\, a world 10 times more massive than Earth\, is thought to be responsible for at least five strange features in the solar system including the oddly inclined orbits of a few Kuiper Belt objects. This theoretical orb has captured the attention of many\, but remains undetected. But research suggests if Planet Nine exists out there\, it could be residing somewhere between 59 billion km to 119 billion km from the sun. \nAlthough the possibility of Planet Nine gained significant traction from research groups worldwide\, the theory has also been controversial. Some astronomers argue that the highly eccentric orbits of TNOs\, for which Planet Nine’s presence was considered necessary\, could occur without the hidden planet’s presence. In 2021\, an independent study in fact claimed data used by the team behind the discovery paper first theorizing Planet Nine was biased\, and concluded that there’s a very low chance of such a planet existing. In comparison to Planet Nine\, the newly hypothesized planet — dubbed “Kuiper Belt Planet (KBP)” — would be much closer and more influential on the orbits of Kuiper Belt’s objects\, especially those beyond 7 billion km\, according to the study. \nLinks:\nCould an ‘Earth-like’ planet be hiding in our solar system’s outer reaches?
URL:https://www.a3veen.nl/event/is-there-an-earth-like-planet-in-the-distant-kuiper-belt-publication/
CATEGORIES:Astronomie,Planeet9
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