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天文学家发现了带有四个“太阳”的奇怪星系。_我的网站

一 | 北京时间1月16日消息，我们的太阳系有一颗恒星和八颗行星。    A rescue effort is under way in Australia to try and save 21 crew members who are stranded on a cargo ship in Sydney that is drifting toward cliffs in rough seas, local ABC news reported on Monday.,A police official reportedly stated that shortly after departing the Tasman Sea port city of Wollongong at around 7:30 a.m. local time, the bulk carrier which sails under the Hong Kong flag lost power and began to drift towards the cliffs in the Royal National Park, south of Sydney.,Jumping on here to provide some info about the stranded ship off the coast of Sydney. Name is Portland Bay, HK flagged. Tug with it now and another on the way #sydneyfloods pic.twitter.com/xcsa3A6Itv— Mackerel Sky (@MackerelSky1) July 4, 2022,Meanwhile, in an effort to help the ship in distress, in roughly two hours, a second tugboat is anticipated to arrive to the area.,"My understanding is that the tugboat that is being sent has the capacity to tow it further to sea and the Australian Maritime Safety Authority will co-ordinate the resources needed to get it under way out of its own power," the official reportedly said.,#BREAKING: A crew is stranded on a cargo ship off the coast of the Royal National Park in #Sydney's south.Wild conditions are creating a very difficult rescue operation for emergency crews. @eddy_meyer #9NewsMORE: https://t.co/QcP6MSe8F5 pic.twitter.com/YqbLFDk9FF— 9News Sydney (@9NewsSyd) July 4, 2022,According to the report, an airlift plan for the crew has been scrapped since it was deemed too risky at the moment. Emergency services were en route to the cargo ship, according to New South Wales Premier Dominic Perrottet, in an effort to transport eight non-essential crew members to safety.,"It is obviously a very precarious position and our thoughts are with those on board," he is quoted as saying.,Strong gusts and torrential rain are battering the ship as it travels over a 500-kilometer stretch of the state's south coast from Newcastle to Bateman's Bay, according to reports.,June and July are considered the coldest months in Australia, which is situated in the Southern Hemisphere, and the storms are not of an unusual occurrence.,However, Sydney residents are currently getting "a little bit of reprieve in the rain," Australian Bureau of Meteorology reportedly said, although a gale warning and severe weather warning are still in effect.,'Titanic 2.0': Watch Cruise Ship Collide With Iceberg Near Alaska2 July, 08:43 GMT。但其他星系可能远不止这些，而且会有两三颗恒星围绕彼此运行。一组天文学家发现了一个由四颗恒星组成的星系，它隐藏在146光年之外。这个星系被命名为HD98800。天文学家利用智利的阿塔卡马大毫米阵列射电望远镜发现了它。射电望远镜是发现这个星系的关键，因为这些恒星被原行星盘所包围。据报道，最初的行星盘是指在行星形成之前出现在早期星系中的尘埃和气体环。最终，尘埃和气体会坍缩成行星，但在此之前，圆盘将阻止大部分光从星系中逃逸。然而，无线电波可以穿透灰尘。基于这一原理，科学家们利用射电望远镜在尘埃中发现了四颗独立的恒星。这四颗恒星形成了两对双星，一对在银河系的中心，另一对在数十亿英里外的轨道上。根据天文学家的说法，外对命名为aa和ab，而中心对命名为ba和bb。由四颗恒星组成的星系本身很奇怪，但真正让这个星系奇怪的是原行星盘。在大多数系统中，原始的行星盘与主星对齐。例如，在我们自己的太阳系中，所有的行星和小行星都在与太阳大致相同的平面上运动。HD98800的情况并非如此，它是一个由尘埃和气体组成的原行星盘，与中央恒星平面成直角。恒星系是人类发现的第一个具有这种垂直圆盘的双星系统，这表明宇宙中有许多未知现象等待发现。此外，最初的行星盘通常最终形成行星，这意味着以各种奇怪的角度围绕二元系运行的行星可能会出现。

二 | 我们通常不从这些奇怪的角度寻找行星，因此这表明人类可以在未来探索这些行星。

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