Gaia BH1 (Gaia DR3 4373465352415301632) is a binary system consisting of a G-type main-sequence star and a likely stellar-mass black hole, located about 1,560 light-years (478 pc) away from the Solar System in the constellation of Ophiuchus. [4]

2024年10月24日 · Gaia-1 b is a gas giant exoplanet that orbits a G-type star. Its mass is 1.68 Jupiters, it takes 3.1 days to complete one orbit of its star, and is 0.04047 AU from its star. Its discovery was announced in 2022.

2022年9月20日 · The black hole candidate (artist’s impression of a different black hole, above), dubbed Gaia BH1, is 10 times the mass of the Sun and a mere 1500 light-years away —three times closer to Earth than the next known neighbor, researchers report on the arXiv preprint server last week.

2023年3月30日 · Using data from ESA’s Gaia mission, astronomers have discovered not only the closest but also the second closest black hole to Earth. The black holes, Gaia BH1 and Gaia BH2, are respectively located just 1560 light-years away from us in the direction of the constellation Ophiuchus and 3800 light-years away in the constellation Centaurus.

2022年9月29日 · At a distance of 1,570 light-years, Gaia BH1 is the closest known black hole candidate. The fact that it is so close suggests that there are many more: The team estimates that the Milky Way contains tens of thousands of stars with a black hole companion.

2022年11月4日 · The recently discovered black hole—named Gaia BH1—is three times closer to Earth than the previous record holder. Details about its discovery, as well as about the Sun-like star orbiting it, were...

2024年10月18日 · We propose that the evolution that led to the formation of Gaia BH1 and BH2 simply did not involve an expansion to the cool supergiant phase.

盖亚卫星配置了两架主镜为1.45×0.5米的望远镜，包括三个分离的仪器： 天体测量仪， 光度计， 视向速度光谱仪，分别用来测量恒星的位置、光度以及光谱，进而导出恒星的距离、自行、视向速度、表面光度、有效温度、表面重力等物理信息（图2）。 在盖亚卫星的观测范围内，每个天体平均会被观测70次，任务预期至少5-6年. 盖亚卫星提供的数据或能解决有关我们家园星系的未解之谜，并为天文学的许多其他领域提供独特的洞察力。 其科学目标包括：普查太阳系内天体，探 …

盖亚太空望远镜，由 欧洲航天局 策划，耗资超20亿英镑，于2013年12月19日发射升空，是人类史上最强、最昂贵的 空间望远镜。 盖亚太空望远镜搭载了有史以来最强大的望远镜和 成像系统，将在银河系中为我们描绘超过十亿繁星的星图。 “盖亚”太空望远镜由EADSAstrium公司研制和建造，价值达8亿英镑。 该望远镜配备最大型的高感度摄录机，传感器全长1米。 该望远镜将在外太空的6年间持续观察10亿颗行星。 [1] 其装备有一面总面积达100平方米之巨的反光膜，以保证望 …

2017年7月4日 · Gaia Online is an online hangout, incorporating social networking, forums, gaming and a virtual world.