哈伯太空望遠鏡最新的不可思議宇宙照片

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This new NASA/ESA Hubble Space Telescope image shows the globular cluster IC 4499. Globular clusters are big balls of old stars that orbit around their host galaxy. It has long been believed that all the stars within a globular cluster form at the about same time, a property which can be used to determine the cluster's age. For more massive globulars however, detailed observations have shown that this is not entirely true — there is evidence that they instead consist of multiple populations of stars born at different times. One of the driving forces behind this behaviour is thought to be gravity: more massive globulars manage to grab more gas and dust, which can then be transformed into new stars. IC 4499 is a somewhat special case. Its mass lies somewhere between low-mass globulars, which show a single generation build-up, and the more complex and massive globulars which can contain more than one generation of stars. By studying objects like IC 4499 astronomers can therefore explore how mass affects a cluster's contents. Astronomers found no sign of multiple generations of stars in IC 4499 — supporting the idea that less massive clusters in general only consist of a single stellar generation. Hubble observations of IC 4499 have also helped to pinpoint the cluster's age: observations of this cluster from the 1990s suggested a puzzlingly young age when compared to other globular clusters within the Milky Way. However, since those first estimates new Hubble data been obtained, and it has been found to be much more likely that IC 4499 is actually roughly the same age as other Milky Way clusters at approximately 12 billion years old.
55000光年遠的星群 IC 4499
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猴頭星雲Monkey Head Nebula (NGC 2174與Sharpless Sh2-252)
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哈伯拍過最大的星系群 (宇宙138億年的一半老)
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NGC 2174

This series of images shows the asteroid P/2013 R3 breaking apart, as viewed by the NASA/ESA Hubble Space Telescope in 2013. This is the first time that such a body has been seen to undergo this kind of break-up. The Hubble observations showed that there are ten distinct objects, each with comet-like dust tails, embedded within the asteroid's dusty envelope. The four largest rocky fragments are up to 200 metres in radius, about twice the length of a football pitch. The dates on which the various observations were taken are marked at the bottom of each image, with frames from 29 October 2013, 15 November 2013, 13 December 2013, and 14 January 2014 respectively. The 14 January 2014 frame was not included in the science paper and is additional data.

小行星 P/2013 R3分裂的照片

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星系群Abell 2744的星系Abell2744_Y1 (inset)宇宙最遠的星系之一

Floating at the centre of this new Hubble image is a lidless purple eye, staring back at us through space. This ethereal object, known officially as [SBW2007] 1 but sometimes nicknamed SBW1, is a nebula with a giant star at its centre. The star was originally twenty times more massive than our Sun, and is now encased in a swirling ring of purple gas, the remains of the distant era when it cast off its outer layers via violent pulsations and winds. But the star is not just any star; scientists say that it is destined to go supernova! 26 years ago, another star with striking similarities went supernova — SN 1987A. Early Hubble images of SN 1987A show eerie similarities to SBW1. Both stars had identical rings of the same size and age, which were travelling at similar speeds; both were located in similar HII regions; and they had the same brightness. In this way SBW1 is a snapshot of SN1987a's appearance before it exploded, and unsurprisingly, astronomers love studying them together. At a distance of more than 20 000 light-years it will be safe to watch when the supernova goes off. If we are very lucky it may happen in our own lifetimes... A version of this image was entered into the Hubble's Hidden Treasures image processing competition by contestant Nick Rose.
死亡中的恆星SBW2007
This new Hubble image shows a cosmic creepy-crawly known as the Tarantula Nebula in infrared light. This region is full of star clusters, glowing gas, and thick dark dust. Created using observations taken as part of the Hubble Tarantula Treasury Project (HTTP), this image was snapped using Hubble's Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys (ACS). The Hubble Tarantula Treasury Project (HTTP) is scanning and imaging many of the many millions of stars within the Tarantula, mapping out the locations and properties of the nebula's stellar inhabitants. These observations will help astronomers to piece together an understanding of the nebula's skeleton, viewing its starry structure.

蜘蛛星雲(Tarantula Nebula)

These NASA/ESA Hubble Space Telescope images reveal a never-before seen set of six comet-like tails radiating from a body in the asteroid belt and designated P/2013 P5. The asteroid was discovered as an unusually fuzzy looking object by astronomers using the Pan-STARRS survey telescope in Hawaii. The multiple tails were discovered in Hubble images taken on 10 September 2013. When Hubble returned to the asteroid on 23 September its appearance had totally changed — it looked as if the entire structure had swung around. One interpretation is that the asteroid's rotation rate has increased to the point where dust is falling off the surface and escaping into space, where it is swept out into tails by the pressure of sunlight. According to this theory, the asteroid's spin has been accelerated by the gentle push of sunlight. Based on an analysis of the tail structure, the object has ejected dust for at least five months. These visible-light images were taken with Hubble's Wide Field Camera 3. P/2013 P5 is seen on the left as viewed on 10 September 2013, and on the right as seen on 23 September 2013.

小行星帶第一個看見的多尾小行星P/2013 P5

This is a diagram of the structure seen around an active asteroid designated P/2013 P5. The NASA/ESA Hubble Space Telescope imaged six dust tails in September 2013. One interpretation is that the asteroid's rotation rate has increased to the point where dust is falling off the surface along the equator and escaping into space. The pressure of sunlight then sweeps the dust into long tails. The entire structure rotates like a wheel.

六尾小行星P/2013 P5

This mosaic shows a selection of stunning images of bipolar planetary nebulae taken by Hubble. A new study using Hubble observations has found that bipolar planetary nebulae located towards the central bulge of our Milky Way appear to be strangely aligned in the sky — a surprising result given their varied histories. The nebulae shown here were not involved in this new study, but demonstrate the varied forms of these spectacular objects. Row 1 (from upper left): NGC 6302, NGC 6881, NGC 5189 Row 2 (from lower left) : M2-9, Hen 3-1475, Hubble 5

雙極行星狀星雲(bipolar planetary nebulae)合集

This image shows an example of a bipolar planetary nebula known as NGC 6537 taken with the New Technology Telescope at ESO’s La Silla Observatory. The shape, reminiscent of a butterfly or an hourglass, was formed as a Sun-like star approached the end of its life and puffed its outer layers into the surrounding space. For bipolar nebulae, this material is funnelled towards the poles of the ageing star, creating the distinctive double-lobed structure. Observations using the NTT and Hubble have found that bipolar planetary nebulae located towards the central bulge of our Milky Way appear to be strangely aligned in the sky  — a surprising result given their varied and chaotic formation. NGC 6537, which lies much closer to the Earth, was not part of the new study.

NGC 6537

This image taken with the NASA/ESA Hubble Space Telescope shows an example of a bipolar planetary nebula. This object, which is known as Hubble 12 and also catalogued as PN G111.8-02.8, lies in the constellation of Cassiopeia. The striking shape of Hubble 12, reminiscent of a butterfly or an hourglass, was formed as a Sun-like star approached the end of its life and puffed its outer layers into the surrounding space. For bipolar nebulae, this material is funnelled towards the poles of the ageing star, creating the distinctive double-lobed structure. Observations using the NTT and Hubble have found that bipolar planetary nebulae located towards the central bulge of our Milky Way appear to be strangely aligned in the sky — a surprising result given their varied and chaotic formation.

Hubble 12 (PN G111.8-02.8)在仙后座

This group portrait shows four bipolar planetary nebulae imaged using ESO telescopes. Studies of similar objects in the central bulge of the Milky Way have revealed an unexpected alignment. The objects shown here are much closer to Earth than those used in the new study, but demonstrate the varied forms of these spectacular objects. The objects shown are: upper-left: the Dumbbell Nebula, Messier 27. upper-right: NGC 6302, lower-left: NGC 5189 and lower-right Fleming 1.

銀河系中央的雙極行星狀星雲

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毛毛蟲狀的原恆星(protostar) IRAS 20324+4057正在收集物質中

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螺旋星系NGC 2936與椭圆星系NGC 2937

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馬頭星雲(horsehead nebula)

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200 000光年遠的大麥哲倫星系(Large Magellanic Cloud)

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NGC 1763是大麥哲倫星系恆星形成區N11的一部分

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哈伯前十名照片(上排NGC 6300)

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無法解釋的暗物質

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星系群RCS2 032727-132623

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超新星爆發SNR 0509-67.5

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雙極恆星(bipolar star)形成區Sharpless 2-106或 S106

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馬卡瑞安(Markarian) 509

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項鍊星雲(Necklace Nebula)離地球15,000光年遠在人馬座(Sagitta)
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來源: Space.com

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