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人工衛星打ち上げ用としては世界最小クラスのロケットが1月15日午前8時33分、宇宙航空研究開発機構（JAXA）の内之浦宇宙空間観測所（鹿児島県肝付町）で打ち上げられたが、飛行を中断して打ち上げは失敗した。NHKニュースによると、機体の状態を示すデータが途中で受信できなくなったため、2段目のロケットに点火しなかったという。
このロケットは「SS-520 4号機」。2段式の観測用ロケットを改造して3段式にしたもので、直径52cm、全長9.54m、重量は2.6トンしかない。FNNニュースではその大きさから「電柱ロケット」と報じている。打ち上げる衛星「TRICOM-1」も、重さ3キロと超小型だ。打ち上げ費用は数億円程度と見られている。打ち上げは当初、1月11日を予定していたが、強風の影響で直前で中止となっていた。
現在の宇宙開発では、数トン程度の人工衛星を打ち上げるための大型ロケットが主流だ。技術の発達で重さ数キロの超小型衛星も開発されたが大型ロケットでしか打ち上げるしか手段がなく、非効率さを指摘する声も出ていた。超小型衛星に合わせた小型ロケットへの期待が世界的に高まっており、今回の「SS-520 4号機」は、その先駆けになりそうだった。
1月9日、内之浦宇宙空間観測所において行われたSS-520 4号機実験の機体公開の様子
■打ち上げの模様（NVSによる中継）
■関連スライドショー「ハッブル宇宙望遠鏡が捉えた宇宙」
ハッブル宇宙望遠鏡が捉えた宇宙
(01 of25)
2014: Frontier Field Abell 2744\n\nCredit: NASA, ESA, and J. Lotz, M. Mountain, A. Koekemoer, and the HFF Team (STScI)\n
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(02 of25)
2013: Horsehead Nebula\n\nCredit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)\n
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(03 of25)
2012: Planetary Nebula NGC 5189\n\nCredit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)\n
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(04 of25)
2011: Interacting Galaxies Arp 273\n\nCredit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)\n
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(05 of25)
2010: Pillar and Jets in Carina\n\nCredit: NASA, ESA, and M. Livio and the Hubble 20th Anniversary Team (STScI)\n
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(06 of25)
2009: Saturn Quadruple Moon Transit\n\nCredit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)\n
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(07 of25)
2008: Interacting Galaxy Arp 148\n\nCredit: NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University)\n
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(08 of25)
2007: NGC 602\n\nCredit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) - ESA/Hubble Collaboration\n
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(09 of25)
2006: Orion Nebula\n\nCredit: NASA,ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team\n
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(10 of25)
2005: Whirlpool Galaxy (M51)\n\nCredit: NASA, ESA, S. Beckwith (STScI), and The Hubble Heritage Team (STScI/AURA)\n
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(11 of25)
2004: Helix Nebula\n\nCredit: NASA, ESA, C.R. O\'Dell (Vanderbilt University), M. Meixner and P. McCullough (STScI)\n
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(12 of25)
2003: V838 Monocerotis\n\nCredit: NASA, ESA and H.E. Bond (STScI)\n
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(13 of25)
2002: Tadpole Galaxy\n\nCredit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin (STScI), G. Hartig (STScI), the ACS Science Team, and ESA\n
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(14 of25)
2001: Warped Edge-On Galaxy ESO 510-G13\n\nImage Credit: NASA and The Hubble Heritage Team (STScI/AURA), Acknowledgment: C. Conselice (U. Wisconsin/STScI)\n
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(15 of25)
2000: The Eskimo Nebula (NGC 2392)\n\nCredit: NASA, Andrew Fruchter and the ERO Team [Sylvia Baggett (STScI), Richard Hook (ST-ECF), Zoltan Levay (STScI)\n
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(16 of25)
1999: Mars\n\nCredit: Steve Lee (University of Colorado), Jim Bell (Cornell University), Mike Wolff (Space Science Institute), and NASA\n
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(17 of25)
1998: NGC 4314\n\nCredit: G. Fritz Benedict, Andrew Howell, Inger Jorgensen, David Chapell (University of Texas), Jeffery Kenney (Yale University), and Beverly J. Smith (CASA, University of Colorado), and NASA\n
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(18 of25)
1997: M84 Black Hole Signature\n\nCredit: Gary Bower, Richard Green (NOAO), the STIS Instrument Definition Team, and NASA\n
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(19 of25)
1996: Hubble Deep Field\n\nCredit: Robert Williams and the Hubble Deep Field Team (STScI) and NASA\n
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(20 of25)
1995: Eagle Nebula, M16\n\nCredit: NASA, ESA, STScI, J. Hester and P. Scowen (Arizona State University)\n
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(21 of25)
1994: Spiral Galaxy M100\n\nCredit: NASA, ESA, STScI\n
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(22 of25)
1993: Veil Nebula\n\nCredit: J.J. Hester (Arizona State University), and NASA\n
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(23 of25)
1992: Orion Nebula\n\nCredit: C.R. O\'Dell (Rice University), and NASA\n
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(24 of25)
1991: NGC 4621\n\nCredit: Walter Jaffe/Leiden Observatory, Holland Ford/JHU/STScI, and NASA\n
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(25 of25)
1990: Supernova 1987A (SN 1987a)\n\nCredit: NASA, ESA, and STScI\n
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