我国航天器首次观测到星际天体！|太阳系|恒星|探测器|星际天体|系外行星|航天器

来源：滚动播报

（来源：CGTN）

据国家航天局消息，近日，天问一号环绕器利用高分辨率相机成功观测到星际天体——阿特拉斯（3I/ATLAS），这也是我国航天器首次观测到星际天体。其间，天问一号环绕器距离目标天体约3000万千米，是目前观测该天体距离最近的探测器之一。

Using its high-resolution camera, China's Tianwen-1 orbiter has successfully observed the interstellar object 3I/ATLAS at a distance of about 30 million kilometers, according to the China National Space Administration (CNSA). This makes it one of the closest probes to study this celestial body so far.

天问一号环绕器高分辨率相机拍摄到的阿特拉斯。/央视新闻

阿特拉斯于2025年7月1日由位于智利的巡天望远镜发现，是已知造访太阳系的第三颗星际天体，沿双曲线轨道穿越太阳系。该天体可能形成于银河系中心古老恒星周围，推测年龄约30亿—110亿年，有可能比太阳系年龄还老，是探测系外行星成分、演化及早期恒星历史的稀有样本，具有重要科学意义。

Discovered on July 1, 2025, by a sky survey telescope in Chile, the object is believed to have originated near ancient stars close to the galactic center, with an estimated age of between 3 and 11 billion years, possibly predating our solar system. It serves as a rare sample for studying the composition and evolution of exoplanets and the history of early stars, holding significant scientific value.

高分辨率相机获取数据由地面应用系统接收和处理后显示，图像中该天体彗星特征明显，由彗核及其周围的彗发共同构成，直径达数千千米。科研人员利用连续30秒拍摄的系列图像制作成的动画形象展示了该天体的运动轨迹。通过这些观测数据，科研人员正进一步开展阿特拉斯的深入研究。

The images clearly show the object's comet-like features, including its nucleus and surrounding coma. Researchers also created an animated visualization of its motion path using a sequence of images taken over 30 seconds to support further study.