每日一圖來(lái)個(gè)視頻？畫(huà)質(zhì)感人QAQ

先給個(gè)動(dòng)圖可能不太清晰，高清視頻晚上發(fā)！

How do clusters of galaxies form? Since our universe moves too slowly to watch, faster-moving computer simulations are created to help find out. A recent effort is?TNG50?from?IllustrisTNG, an upgrade of the famous?Illustris Simulation. The first part of the?featured video?tracks cosmic gas (mostly?hydrogen) as it evolves into?galaxies?and?galaxy clusters?from the early universe to today, with brighter colors marking faster moving gas. As the universe matures, gas falls into?gravitational wells, galaxies forms, galaxies spin, galaxies collide and merge, all while?black holes form in galaxy centers?and expel surrounding gas at high speeds. The second half of?the video?switches to tracking stars, showing a galaxy cluster coming together complete with?tidal tails and?stellar streams. The outflow from black holes in?TNG50?is?surprisingly?complex and details are being compared with our?real universe.?Studying how?gas coalesced in the?early universe?helps humanity better understand how our?Earth,?Sun, and?Solar System?originally formed.

星系團(tuán)是如何形成的？由于我們的宇宙運(yùn)動(dòng)緩慢而使得這一過(guò)程無(wú)法觀測(cè)，為了尋找答案，我們使用計(jì)算機(jī)以最快的速度模擬了星系團(tuán)的形成。最近的一項(xiàng)成果是源自Illustris TNG的TNG50，它是著名的Illustris天體物理模擬的升級(jí)版。這段精彩視頻的前半部分呈現(xiàn)了早期宇宙中的氣體（主要由氫構(gòu)成）逐步演化成星系和星系團(tuán)的過(guò)程。其中較亮的顏色表示運(yùn)動(dòng)速度更快的氣體。隨著宇宙的成熟，氣體逐步落入引力井，星系形成并開(kāi)始自旋，隨后與其他星系碰撞后合并，同時(shí)黑洞則在星系中心形成，使其周圍的氣體高速向外噴射。該視頻的后半部分切換到對(duì)恒星的追蹤，呈現(xiàn)了一個(gè)由潮汐尾和恒星流組成的星系團(tuán)。TNG50模型中的黑洞噴流異常復(fù)雜，其細(xì)節(jié)正在與真實(shí)宇宙進(jìn)行比對(duì)。研究早期宇宙中的氣體是如何凝聚的，將有助于人類更好的理解地球、太陽(yáng)和太陽(yáng)系是如何形成的。