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NASA Image Of The Day

Hubble's View of the Polar Ring of Arp 230
NASA Image Of The Day
This image shows Arp 230, also known as IC 51, observed by the NASA/ESA Hubble Space Telescope. Arp 230 is a galaxy of an uncommon or peculiar shape, and is therefore part of the Atlas of Peculiar Galaxies produced by Halton Arp. Its irregular shape is thought to be the result of a violent collision with another galaxy sometime in the past. The collision could also be held responsible for the formation of the galaxy?s polar ring. The outer ring surrounding the galaxy consists of gas and stars and rotates over the poles of the galaxy. It is thought that the orbit of the smaller of the two galaxies that created Arp 230 was perpendicular to the disk of the second, larger galaxy when they collided. In the process of merging the smaller galaxy would have been ripped apart and may have formed the polar ring structure astronomers can observe today. Arp 230 is quite small for a lenticular galaxy, so the two original galaxies forming it must both have been smaller than the Milky Way. A lenticular galaxy is a galaxy with a prominent central bulge and a disk, but no clear spiral arms. They are classified as intermediate between an elliptical galaxy and a spiral galaxy. European Space Agency Image Credit: ESA/Hubble & NASA, Acknowledgement: Flickr user Det58...
30 Jan 2015
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Monday, 02 January 2006 00:00

 

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4 p.m., Friday, January 9 - 2015 FIRST Kickoff (NTV-1 (Public), NTV-2 (Education))

 

8 p.m., Friday, January 9 - Replay of NASA ISS Earth Science Briefing: Cloud Aerosol Transport System (CATS) (all channels)

 

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10 p.m., Friday, January 9 - Replay of SpaceX Commercial Resupply Services (CRS) -5 Prelaunch News Conference (all channels)

 

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1:30 p.m., Wednesday, January 21 - ISS Expedition 42 In-Flight Educational Event (all channels)

 

TBD, Wednesday, January 28 - ISS Expedition 42 In-Flight Interviews with the Air Force Times and the Houston Chronicle with ISS Commander Barry Wilmore and Flight Engineer Terry Virts of NASA and Flight Engineer Samantha Cristoforetti of ESA (all channels)

 

8:50 a.m., Thursday, January 29 - Live NASA Edge coverage of the launch of SMAP (NTV-2 (Education))

 

2 p.m., Tuesday, February 10 - ISS Expedition 42 Spacewalk Preview Briefing (all channels)

 

2 p.m., Thursday, February 12 - ISS Expedition 42 Spacewalk Preview Briefing (all channels)

 

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2015
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TBD - Dragon (SpX-6) capture and berthing (to Harmony nadir) by SSRMS
TBD - Dragon (SpX-6) unberthing (from Harmony nadir) and releasing by SSRMS
January 18 - Cygnus (Orb-4) launch
January 21 - Cygnus (Orb-4) capture and berthing (to Harmony nadir) by SSRMS
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February - HTV-5 "Kounotori-5" capture and berthing (to Harmony nadir) by SSRMS
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February - spacewalk (ISS U.S. EVA) from Quest airlock
March - HTV-5 "Kounotori-5" unberthing (from Harmony nadir) and release by SSRMS
March 7 - Cygnus (Orb-4) unberthing (from Harmony nadir) and releasing by SSRMS
March 12 - Soyuz TMA-14M undocking (from Poisk) and landing [Samokutyaev, Serova, Wilmore]
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April - spacewalk (ISS U.S. EVA) from Quest airlock
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April 30 - Progress M-27M launch and docking (to Pirs)
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middle of June - PMA-3 relocation (from Tranquility port to Harmony zenith) by SSRMS
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beginning of July - PMM Leonardo relocation (from Unity nadir to Tranquility forward) by SSRMS
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July 24 - Cygnus (Orb-5) launch
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July 28 - Progress M-27M undocking (from Pirs)
July 30 - Progress M-28M launch and docking (to Pirs)
August 22 - Progress M-26M undocking (from Zvezda)
August 26 - Cygnus (Orb-5) unberthing (from Harmony nadir) and releasing by SSRMS
September 29 - Progress M-28M undocking (from Pirs)
October 1 - Soyuz TMA-16M relocation (from Poisk to Zvezda)
October 4 - Soyuz TMA-18M launch [Volkov, Mogensen, Brightman] and docking (to Poisk)
October 14 - Soyuz TMA-16M undocking (from Zvezda) and landing [Padalka, Mogensen, Brightman]
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November (TBD) - Nauka launch
November 11 - Dragon (SpX-9) launch
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November 16 - Soyuz TMA-17M undocking (from Rassvet) and landing [Kononenko, Yui, Lindgren]
November 30 - Soyuz TMA-19M launch and docking (to Rassvet) [TBD, Kopra, Peake]
December 28 - Dragon (SpX-9) unberthing (from Harmony nadir) and releasing by SSRMS
December - spacewalk (ISS U.S. EVA) from Quest airlock

2016
January 4 - Cygnus (Orb-6) launch
January 7 - Cygnus (Orb-6) capture and berthing (to Harmony nadir) by SSRMS
February 6 - Cygnus (Orb-6) unberthing (from Harmony nadir) and releasing by SSRMS
February 8 - HTV-6 "Kounotori-6" launch
February 13 - HTV-6 "Kounotori-6" capture and berthing (to Unity nadir) by SSRMS
February 19 - Dragon (SpX-10) launch
February 21 - Dragon (SpX-10) capture and berthing (to Harmony nadir) by SSRMS
February 22 - Progress MS-2 launch and docking (to Pirs)
March 14 - HTV-6 "Kounotori-6" unberthing (from Unity nadir) and release by SSRMS
March 16 - Soyuz TMA-18M undocking (from Poisk) and landing [Volkov, Kornienko, Kelly]
March 23 - Dragon (SpX-10) unberthing (from Harmony nadir) and releasing by SSRMS
March 30 - Soyuz MS launch and docking (to Poisk) [Ovchinin, Skripochka, J.Williams]

Changes on March 23rd
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- Photo & Content Credit : National Aeronautics and Space Administration ( NASA )

 

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