天文學

Neutron star smash sets the universe quivering

Astronomers have entered a new era, combining observations of gravitational waves and light for the first time. They have recorded a cataclysmic collision between two neutron stars in a distant galaxy, which not only set the universe aquiver but also propelled newly created atoms of gold, uranium and other heavy metals into space.

Excited scientists announced the discovery at briefings around the world on Monday. One of them, Professor Stephen Smartt of Queen’s University Belfast, said: “This opens up a new dawn in physics and astronomy. We had only just begun to detect gravitational waves and now we have used telescopes to detect light from the object that caused them: a merger of two neutron stars, which had been predicted but never seen before.”

Neutron stars are the densest form of matter known — the collapsed cores of massive stars. Each has a mass greater than the Sun in a region of space just 10km across. Putting it another way, a teaspoon of neutron star would weigh a billion tonnes.

您已閱讀40%(1004字),剩餘60%(1476字)包含更多重要資訊,訂閱以繼續探索完整內容,並享受更多專屬服務。
版權聲明:本文版權歸FT中文網所有,未經允許任何單位或個人不得轉載,複製或以任何其他方式使用本文全部或部分,侵權必究。

中東期待沙烏地阿拉伯制衡川普

阿拉伯國家希望穆罕默德王儲和美國當選總統川普的密切關係能夠緩和川普政府的中東政策。

投資者押注防務支出增加,Palantir成爲「川普交易」贏家之一

彼得•蒂爾創立的數據公司的最大客戶是美國政府,自川普本月當選以來,其市值增加了230億美元。

Lex專欄:成長來之不易,雀巢前景平淡

要實現其成長目標,這家瑞士集團需要增加行銷投資。

Lex專欄:便宜商品是沃爾瑪股價上漲的基礎

沃爾瑪通過吸引高收入顧客和增加其他收入來源,出色地應對了經濟不景氣和通膨帶來的挑戰。

Lex專欄:奢侈品品牌寄希望於自己的美國夢

奢侈品在美國越來越具有吸引力,可能爲該行業提供新的成長跑道。

諾和諾德準備下一代減肥藥的試驗結果

這家丹麥公司預計,最新數據將顯示CagriSema可在一年多的時間內減輕25%的體重。
設置字型大小×
最小
較小
默認
較大
最大
分享×