File:The loneliest firework display.jpg
原始檔案 (3,521 × 3,449 像素,檔案大小:6.27 MB,MIME 類型:image/jpeg)
摘要
描述The loneliest firework display.jpg |
English: Roughly 50 million light-years away lies a somewhat overlooked little galaxy named NGC 1559. Pictured here by Hubble’s Wide Field Camera 3, this barred spiral lies in the little-observed southern constellation of Reticulum (The Reticule).
NGC 1559 has massive spiral arms chock-full of star formation, and is receding from us at a speed of about 1300 km/s. The galaxy contains the mass of around ten billion Suns — while this may sound like a lot, that is almost 100 times less massive than the Milky Way. Although NGC 1559 appears to sit near one of our nearest neighbours in the sky — the Large Magellanic Cloud (LMC), this is just a trick of perspective. In reality, NGC 1559 is physically nowhere near the LMC in space — in fact, it truly is a loner, lacking the company of any nearby galaxies or membership of any galaxy cluster. Despite its lack of cosmic companions, when this lonely galaxy has a telescope pointed in its direction, it puts on quite a show! NGC 1559 has hosted a variety of spectacular exploding stars called supernovae, four of which we have observed — in 1984, 1986, 2005, and 2009 (SN 1984J, 1986L, 2005df [a Type Ia], and 2009ib [a Type II-P, with an unusually long plateau]). NGC 1559 may be alone in space, but we are watching and admiring from far away. |
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來源 | https://www.spacetelescope.org/images/potw1806a/ |
作者 | ESA/Hubble & NASA |
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共享創意署名4.0國際 Chinese (Hong Kong) (已轉換拼寫)
5 2 2018
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目前 | 2018年2月5日 (一) 14:09 | 3,521 × 3,449(6.27 MB) | Jmencisom | User created page with UploadWizard |
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製作/提供者 | ESA/Hubble & NASA |
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來源 | ESA/Hubble |
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資料產生的日期時間 | 2018年2月5日 (一) 06:00 |
關鍵字 | NGC 1559 |
聯絡資訊 |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM 版本 | 4 |