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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

A | 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。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。

B | 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。    TOKYO -- Japan's Prime Minister Fumio Kishida said Monday he is preparing to take bold economic measures, including an income tax cut for households hit by inflation and tax breaks for companies to promote investment, in what's seen as a move to lift his dwindling public support.In his speech to start a new Parliamentary session, Kishida said it was time to shift from an economy of low cost, low wages and cost-cutting to one backed by growth led by sustainable wage hikes and active investment.“I'm determined to take unprecedentedly bold measures,” Kishida said, pledging an intensive effort to achieve stronger supply capability in about three years. “I will put more emphasis on the economy than on anything else.”He said he is determined to help people ride out the impact of soaring prices for food, utilities and other costs that have exceeded their salary increases, by implementing income tax cuts. He also pledged to introduce corporate tax incentives to promote wage increases, investment and optimization. Previously, Kishida had been considered reluctant to cut taxes because his government must find the funds to double Japan's defense budget within five years as planned while also trying to counter the impact of Japan’s low birth rate and rapidly declining population.Kishida's pledge on tax breaks has been criticized by opposition leaders as a vote-buying attempt because the proposals surfaced just before two by-elections held on Sunday that were seen as a litmus test for potential snap elections. His Liberal Democratic Party secured a parliamentary seat representing Nagasaki in Sunday's vote but lost in a combined district in Kochi and Tokushima to a candidate backed by the main opposition Constitutional Democratic Party of Japan. “The results clearly show that many voters are dissatisfied by the government's delayed economic measures to tackle rising prices," said Jun Azumi, a senior CDPJ lawmaker. Kishida told reporters that he takes the results seriously and that he will tackle important policies one by one. “Now is the time for me to focus on that, and I'm not thinking about anything else,” Kishida said, denying that his tax cut proposal was related to elections.The tax cuts would be part of a new economic stimulus package he plans to announce by the end of the month. On the diplomatic front, Kishida in his speech reiterated the need to strengthen Japan’s military, given conflicts that are underway elsewhere, such as Russia’s invasion of Ukraine and the war between Israel and Gaza's militant Hamas rulers. Kishida also urged China to immediately lift its ban on Japanese seafood imports imposed in August when the tsunami-wrecked Fukushima Daiichi nuclear plant started releasing the treated radioactive wastewater into the sea. The government is working to find new markets for the Japanese fishing industry that are less reliant on China, Kishida said.。这个星系被命名为HD98800。

C | 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。

D | 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。

E | 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。

F | 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。

G | 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。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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Published on:06:36:14