天文·每日一图

天文·每日一图

M82：有超级星系风的星爆星系

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2021年7月9日 M82: Starburst Galaxy with a Superwind Image Credit & Copyright: Team ARO, Alentejo Remote Observatory Explanation: M82 is a starburst galaxy with a superwind. In fact, through ensuing supernova explosions and powerful winds from massive stars, the burst of star formation in M82 is dr […]

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近日点与远日点

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2021年7月8日 Perihelion to Aphelion Image Credit & Copyright: Richard Jaworski Explanation: Aphelion for 2021 occurred on July 5th. That’s the point in Earth’s elliptical orbit when it is farthest from the Sun. Of course, the distance from the Sun doesn’t determine the seasons. T

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穿过红外光波段的猎户大星云

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2021年07月07日 Flight Through the Orion Nebula in Infrared Light Video Credit: NASA, Spitzer Space Telescope, Universe of Learning; Visualization: F. Summers (STScI) et al.; Music & License: Serenade for Strings (A. Dvořák), Advent Chamber Orch. Explanation: What would it look like to fly into the

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土星与六颗卫星

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2021年07月06日 Saturn and Six Moons Image Credit & Copyright: Mohammad Ranjbaran; MR Thanks: Amir Ehteshami Explanation: How many moons does Saturn have? So far 82 have been confirmed, the smallest being only a fraction of a kilometer across. Six of its largest satellites can be seen here in a com

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IC 4592：蓝马头反射星云

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2021年07月05日 IC 4592: The Blue Horsehead Reflection Nebula Image Credit & Copyright: Adam Block, Steward Observatory, University of Arizona Explanation: Do you see the horse’s head? What you are seeing is not the famous Horsehead nebula toward Orion but rather a fainter nebula that only ta

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火星脸谱

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2021年07月04日 The Face on Mars Image Credit: NASA, Viking 1 Orbiter Explanation: Wouldn’t it be fun if clouds were castles? Wouldn’t it be fun if the laundry on the bedroom chair was a superhero? Wouldn’t it be fun if rock mesas on Mars were interplanetary monuments to the human face

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银河

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2021年07月03日 Along the Milky Way Image Credit & Copyright: Rolf Weisenfeld Explanation: You can’t walk along the Milky Way. Still, under a dark sky you can explore it. To the eye the pale luminous trail of light arcing through the sky on a dark, moonless night does appear to be a path thro

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AR2835：光球层上的黑子群

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2021年07月02日 AR2835: Islands in the Photosphere Image Credit & Copyright: Michael Teoh, Heng Ee Observatory, Penang, Malaysia Explanation: Awash in a sea of incandescent plasma and anchored in strong magnetic fields, sunspots are planet-sized dark islands in the solar photosphere, the bright sur

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毅力号与机智号的自拍照

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2021年07月01日 Perseverance Selfie with Ingenuity Image Credit: NASA, JPL-Caltech, MSSS Explanation: On sol 46 (April 6, 2021) the Perseverance rover held out a robotic arm to take its first selfie on Mars. The WATSON camera at the end of the arm was designed to take close-ups of martian rocks and surf

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模拟：第一代恒星的形成

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2021年06月30日 Simulation: Formation of the First Stars Video Credit: Harley Katz (U. Oxford) et al. Explanation: How did the first stars form? To help find out, the SPHINX computer simulation of star formation in the very early universe was created, some results of which are shown in the featured vide

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