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The Star-Spectroscope of the Lick Observatory in 1898. Designed by James Keeler and constructed by John Brashear.

天体分光法光のスペクトルで読み解く宇宙の正体

天体分光法スペクトル分析ドップラーシフト赤方偏移
The hot accretion disk of a black hole, showing the relativistic effects imposed on light when it is emitted in regions subject to extreme gravitation. This image is the result of NASA simulations and shows a view from outside the horizon of a Schwarzschild black hole.

降着円盤のメカニズムと宇宙における多様な形態

降着円盤ブラックホール中性子星角運動量