罗曼望远镜计划绘制更精细银河系地图

Core Viewpoint - NASA has announced detailed plans for the Nancy Grace Roman Space Telescope's future "Galactic Plane Survey," which aims to observe billions of stars in unprecedented detail, exploring unknown structures and further unraveling the mysteries of the Milky Way [1][3]. Group 1 - The Roman Telescope team states that this survey will fundamentally change human understanding of the Milky Way, helping scientists explore the galaxy's distant edges and densely packed central regions [3]. - The telescope is scheduled for launch in May 2027, with potential early launch procedures starting in the fall of 2026 [3]. - The Roman Telescope will utilize infrared wavelengths to penetrate interstellar dust, revealing hidden secrets of the galaxy that were obscured in previous observations by the retired Gaia space telescope [3]. Group 2 - The survey will cover nearly 700 square degrees of the Milky Way's central luminous band, where most of the galaxy's stars, gas, and dust are concentrated [3]. - It is expected to map the positions of up to 20 billion stars and capture minute positional changes through repeated high-resolution observations [3]. - The telescope will penetrate "stellar nurseries" to observe millions of stellar embryos, newly formed stars still enveloped in dust, and young stars that may be forming planetary systems [3]. Group 3 - The Roman Telescope will study nearly 2,000 young open star clusters to understand how galactic spiral arms trigger star formation [4]. - It will map dozens of ancient and dense globular clusters near the center of the Milky Way to help reconstruct the galaxy's early history [4]. - Continuous monitoring of stars in the central bar structure of the Milky Way will be conducted to study dense binary systems nearing the end of their life cycles, revealing more secrets about gravitational waves [4].