可見光和紅外線中的獵戶座星雲
The Orion Nebula in Visible and Infrared

來源:Infrared: NASA,
Spitzer Space Telescope;
Visible:
Oliver Czernetz,
Siding Spring Obs.|發表日期:2025-04-20
獵戶座大星雲是一個色彩斑斕的地方。 在獵戶座中,獵戶座大星雲在肉眼看來只是一個模糊的小斑點。 然而,像這樣長時間曝光的多波長影像顯示,獵戶座大星雲是一個由年輕恆星、熾熱氣體和暗色塵埃組成的繁忙鄰域。 這張數字合成照片不僅有三種顏色的可見光,還有四種顏色的紅外光,由美國宇航局的軌道斯皮策太空望遠鏡拍攝。 獵戶座星雲(M 42 )背後的動力來自梯狀星團--星雲中最亮的四顆恆星。 許多可見的絲狀結構實際上是衝擊波--快速運動的物質遇到緩慢運動的氣體的前沿。 獵戶座星雲橫跨大約 40 光年,位於大約 1500 光年之外,與太陽位於銀河系的同一旋臂上。
原文:The Great Nebula in Orion is a colorful place. Visible to the unaided eye, it appears as a small fuzzy patch in the constellation of Orion. Long exposure, multi-wavelength images like this, however, show the Orion Nebula to be a busy neighborhood of young stars, hot gas, and dark dust. This digital composite features not only three colors of visible light but four colors of infrared light taken by NASA's orbiting Spitzer Space Telescope as well. The power behind much of the Orion Nebula (M42) is the Trapezium - four of the brightest stars in the nebula. Many of the filamentary structures visible are actually shock waves - fronts where fast moving material encounters slow moving gas. The Orion Nebula spans about 40 light years and is located about 1500 light years away in the same spiral arm of our Galaxy as the Sun.
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