M42：猎户座星云内部

2019 October 30

M42: Inside the Orion Nebula
Image Credit & Copyright: Josep M. Drudis & Don Goldman

Explanation: The Great Nebula in Orion, an immense, nearby starbirth region, is probably the most famous of all astronomical nebulas. Here, glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud only 1500 light-years away. In the featured deep image in assigned colors highlighted by emission in oxygen and hydrogen, wisps and sheets of dust and gas are particularly evident. The Great Nebula in Orion can be found with the unaided eye near the easily identifiable belt of three stars in the popular constellation Orion. In addition to housing a bright open cluster of stars known as the Trapezium, the Orion Nebula contains many stellar nurseries. These nurseries contain much hydrogen gas, hot young stars, proplyds, and stellar jets spewing material at high speeds. Also known as M42, the Orion Nebula spans about 40 light years and is located in the same spiral arm of our Galaxy as the Sun.

M42：猎户座星云内部
影像来源：Josep M. Drudis & Don Goldman

说明：猎户星云是一个邻近的庞大恒星诞生区，它可能是所有天文星云中最著名的星云。在这幅影像中，炽热气体环绕在距离我们仅1500光年远的巨大星际分子云边缘的炽热年轻恒星周围。这幅精彩的假色深空影像呈现了由氧和氢辐射的辉光，其中，丝缕状和层状的尘埃和云气尤为明显。我们用肉眼可以很容易辨认出猎户座腰带三星附近的猎户星云。猎户星云内除了拥有一个名为猎户四边形的明亮疏散星团之外，还有许多恒星孕育场。这些孕育场包含大量的氢气、炽热的年轻恒星、原行星盘和由高速喷发物质所形成的恒星喷流。猎户星云的编录号为M42，跨度约40光年，与太阳位于同一条银河系旋臂上。