（来源：上观新闻） 果然，循着鸟语，隔着湿地保护网，但见湖天之间，各色披着羽毛的"仙女"，双双对对，呼啦啦一阵风 来，呼啦啦一阵风去，你跳一段"圆舞曲"，它来一曲《致爱丽丝》，把萧瑟的寒冬扇得温馨而浪漫。仿 佛没有既定节目单的全天候舞会，舞者来去自由。收拢翅膀，它们便降落浅水滩或树上，或低头觅食； 或缩头发呆；或扭过头颈，插进翅膀里打盹，快活。我叫不出"仙女"们的名字，岸边的护网上公示有它 们的身份信息：小天鹅、白鹤、东方白鹳、豆雁……拉近镜头，雪白雪白的估计是小天鹅，与枯草一样 色调的恐怕就是雁家族了。它们竟然友好地混在一起，最远的客来自遥远的西伯利亚，好羡慕候鸟们来 去自由。候鸟喜欢月亮湖的秋冬，我也喜欢。碰巧年底出差池州，住所就在月亮湖附近。一住好几天， 机会难得，兴奋得我每天起大早，赶湖。 月亮湖其实是平天湖的一个核心水域。因这里食物丰富，大片的芦苇荡、灌木丛或树林还能提供躲避天 敌和恶劣天气的庇护所，所以，越冬候鸟云集于此。平天湖的面积相当于西湖的1.7倍。清晨的平天 湖，笼罩在轻柔、朦胧的"素纱单衣"中，这是大自然的妙手以水汽与诗意织就的素纱，鸟影、山影、云 影氤氲其中，若隐若现，分不清哪是真，哪 ...

Core Concept - The article discusses the theoretical concept of white holes, which are the opposite of black holes, and explores their potential existence and implications in the universe [1][2][5]. Group 1: Black Holes - Black holes are formed when a massive star collapses within a critical radius, creating a region from which nothing, not even light, can escape [3]. - The existence of black holes was once doubted, but observational evidence since 1971 has confirmed their presence in the universe [3][4]. - The first image of a supermassive black hole was released in 2019, providing visual evidence of their existence [3]. Group 2: White Holes - White holes theoretically expel matter and energy, preventing anything from entering, and are mathematically related to black holes, differing only in the direction of time [3][4]. - There is currently no observational evidence for the existence of white holes, and some scientists question their formation mechanisms [5]. - Some theories suggest that white holes could explain certain cosmic phenomena, such as the energy output of quasars or the origin of the universe itself [5]. Group 3: Theoretical Implications - Theories propose that black holes and white holes may be connected by wormholes, allowing for the possibility of interstellar travel [4]. - A new hypothesis suggests that when matter is compressed in a black hole, it could undergo a quantum rebound, potentially transforming into a white hole [6]. - If this theory holds true, every black hole in the universe could eventually become a white hole [6]. Group 4: Future Prospects - There is hope that white holes may one day be discovered, potentially opening a gateway to deeper exploration of the universe [7].

Group 1 - The article discusses the theoretical concept of white holes, which are considered the opposite of black holes, expelling matter and energy instead of absorbing them [2][3]. - Black holes were once doubted in their existence until observational evidence, such as the detection of a black hole in the Cygnus X-1 system in 1971, confirmed their presence [2][3]. - The mathematical relationship between black holes and white holes suggests that they share the same properties, with the only difference being the direction of time [2][3]. Group 2 - There is currently no observational evidence supporting the existence of white holes, and some scientists argue that there is no reasonable mechanism for their formation [4]. - Some theories propose that white holes could explain certain cosmic phenomena, such as the energy output of quasars or even the origin of the universe, but these ideas lack observational support [4]. - A new hypothesis suggests that black holes could transform into white holes through a process of quantum rebound when matter is compressed to its limits, potentially allowing every black hole in the universe to become a white hole in the future [5].