保护地球，探索宇宙，发现文明
This image taken by the NASA/ESA Hubble Space Telescope revisits the Veil Nebula, which was featured in a previous Hubble image release. In this image, new processing techniques have been applied, bringing out fine details of the nebula’s delicate threads and filaments of ionized gas. To create this colorful image, observations were taken by Hubble’s W...
通过美国宇航局的凌日系外行星勘测卫星(TESS)的观测，一个国际天文学家团队发现了三个比地球大的热星球，围绕着一个年轻得多的名为TOI 451的恒星运行。该系统位于最近发现的双鱼座-波江座星流中，这是一组年龄不到我们太阳系3%的恒星，横跨了三分之一的天空。 这张插图勾勒出TOI 451的主要特征，这是一个位于波江座400光年之外的三重行星系统。 来源:美国宇航局戈达德太空飞行中心 这些行星是在2018年10月至12月间拍摄的TESS照片中发现的。对TOI 451及其行星的低阶研究包括2019年和2020年使用NASA的斯皮策太空望远镜（现已退役）以及许多地面设施进行的观测。NASA近地天体广域红外探测卫星(NEOWISE)在2009年到2011年期间收集的红外数据显示，该系统保留着由尘埃和岩石碎片组成的冷盘。其...
The life of a planetary nebula is often chaotic, from the death of its parent star to the scattering of its contents far out into space. Captured here by the NASA/ESA Hubble Space Telescope, ESO 455-10 is one such planetary nebula, located in the constellation of Scorpius (The Scorpion). The oblate shells of ESO 455-10, previously held tightly together as la...
Located in the constellation of Virgo (The Virgin), around 50 million light-years from Earth, the galaxy NGC 4535 is truly a stunning sight to behold. Despite the incredible quality of this image, taken from the NASA/ESA Hubble Space Telescope, NGC 4535 has a hazy, somewhat ghostly, appearance when viewed from a smaller telescope. This led amateur astronomer...
是什么推动了雪茄星系(也就是所谓的梅西耶M82)大量气体和尘埃的喷射？ 我们知道，成千上万颗恒星的爆发正在推动一股强大的超级风，将物质吹入星系间的空间。新的研究表明，磁场也有助于梅西耶M82的物质驱逐，这是一个著名的星爆星系的例子，具有独特的、细长的形状。 NASA的平流层红外天文观测站(SOFIA)的发现有助于解释尘埃和气体如何从星系内部移动到星际空间，并为星系的形成提供线索。这种物质富含碳和氧等支持生命的元素，是未来星系和恒星的基石。这项研究在美国天文学会的会议上进行了介绍。 SOFIA是NASA和德国航空航天中心（DLR）)的联合项目，此前曾研究过梅西耶M82(雪茄星系的官方名称)核心附近磁场的方向。这一次，该团队使用了被广泛用于研究太阳周围物理的工具（称为太阳物理学），以了解在比以前大10倍的距离上环绕...
What is pareidolia? It is the psychological phenomenon where we see recognizable shapes in clouds, rock formations, or otherwise unrelated objects or data. When an image from NASA’s Chandra X-ray Observatory of PSR B1509-58 – a spinning neutron star surrounded by a cloud of energetic particles about 17,000 light-years from Earth – was released in 2009,...
2020年12月27日 Cosmic Latte: The Average Color of the Universe Color Credit: Karl Glazebrook & Ivan Baldry (JHU) Explanation: What color is the universe? More precisely, if the entire sky were smeared out, what color would the final mix be? This whimsical question came up when trying to determine what stars are commonplace in nearby galaxies. The answer, d...
Thousands of sparkling young stars are nestled within the giant nebula NGC 3603, one of the most massive young star clusters in the Milky Way Galaxy. NGC 3603, a prominent star-forming region in the Carina spiral arm of the Milky Way about 20,000 light-years away, reveals stages in the life cycle of stars. Powerful ultraviolet radiation and fast winds from t...
The Hubble Space Telescope captured a crowd of stars that looks rather like a stadium darkened before a show, lit only by the flashbulbs of the audience’s cameras. Yet the many stars of this object, known as Messier 107, are not a fleeting phenomenon, at least by human reckoning of time – these ancient stars have gleamed for many billions of year...
Using the unique capabilities of NASA’s Hubble Space Telescope, a team of astronomers has discovered the most energetic outflows ever witnessed in the universe. They emanate from quasars and tear across interstellar space like tsunamis, wreaking havoc on the galaxies in which the quasars live. This illustration shows a distant galaxy with an active qua...