沃里克大学的天文学家发现了第一颗已知的绿色恒星WD J1330+6435，这颗白矮星温度约为4,000摄氏度，其幽灵般的绿色外观由其大气中的钠元素吸收光谱中的橙色部分而产生 1。这一发现于2026年10月19日公布，刊登在《RAS技术与仪器》期刊上 1。
该研究表明，白矮星因其极端密集的大气中不同元素之间的相互作用，能够呈现绿色、粉红色、紫色、黄色和青色等意外颜色 1。沃里克大学天文与天体物理学部的Mark Hollands博士表示："这些极其密集的恒星能产生人们没有预料到的颜色，其中一些颜色确实让我感到惊讶" 1。
在距地球20秒差距范围内的151颗白矮星样本中，研究人员发现约1/30的白矮星可能呈现异常颜色，其中包括5颗具有不寻常色调的星体（2颗黄色，3颗粉红色） 1。此外，研究还确认了距地球48光年外的白矮星WD J1011+2845为有史以来最红的恒星 1。
Researchers at the University of Warwick have identified the first known green star, a white dwarf designated WD J1330+6435, according to findings announced on October 19, 2026.1 The discovery challenges the long-held assumption that stellar color is determined solely by temperature, revealing instead that the extreme physical conditions in white dwarf atmospheres can produce unexpected hues through complex interactions between different elements.1
The green coloration of WD J1330+6435, which has a surface temperature of approximately 4,000 degrees Celsius, results from sodium in its atmosphere absorbing the orange portion of the light spectrum and leaving behind a ghostly green glow.1 Analysis of 151 white dwarfs within 20 parsecs of Earth suggests that roughly one in thirty white dwarfs may display such anomalous colors, with the sample revealing five stars exhibiting unexpected hues: two yellow and three pink alongside the newly discovered green specimen.1 Mark Hollands, a researcher from the University of Warwick's Department of Astronomy and Astrophysics, noted that "these extremely dense stars can produce colors that people did not anticipate, and some of these colors have genuinely surprised me."1
The research, published in RAS Techniques and Instruments (RASTI) in 2026, also identified WD J1011+2845 as potentially the reddest star on record, located 48 light-years from Earth.1
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