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27 February 2012
- 20:4920:49, 27 February 2012 diff hist +14,807 N Death of Stars Created page with "''Under Developmen''t You Have Heard of BLACK HOLES! All stars eventually run out of hydrogen in their cores. Once hydrogen fusion stops the star collapses under its own gra..."
- 20:4820:48, 27 February 2012 diff hist +3,900 N Birth of Stars Created page with "''Under Development'' The early universe was composed mostly of hydrogen. Where the hydrogen was slightly more dense, the gravity of the hydrogen atoms drew it together into..."
- 20:4720:47, 27 February 2012 diff hist +6,433 N Subatomic Particles Created page with "''Under Development'' Protons, Neutrons, Electrons, Quarks, or Energy Itself? When small stars die and their source of fusion energy is gone, gravity overcomes the pressure..."
22 February 2012
- 05:3705:37, 22 February 2012 diff hist +42 The Moon No edit summary current
- 05:3505:35, 22 February 2012 diff hist +22 N File:Moon phases 20120222.png Credit: Helen Kielkopf current
21 February 2012
- 20:2220:22, 21 February 2012 diff hist +185 Elementary Astronomy News Highlights →Week of February 20, 2012
20 February 2012
- 19:4519:45, 20 February 2012 diff hist +2 Elementary Astronomy No edit summary
- 19:4519:45, 20 February 2012 diff hist 0 m Periodic Table of the Elements moved Period Table of the Elements to Periodic Table of the Elements current
- 11:3411:34, 20 February 2012 diff hist +109 Elementary Astronomy No edit summary
- 11:3311:33, 20 February 2012 diff hist +328 We Can See the Universe →Other Galaxies Near and Far
- 11:2911:29, 20 February 2012 diff hist +1 We Can See the Universe →Mass of a Celestial Object
- 11:2911:29, 20 February 2012 diff hist +2 We Can See the Universe →Mass of a Celestial Object
- 11:2811:28, 20 February 2012 diff hist +78 We Can See the Universe →Mass of a Celestial Object
- 11:2411:24, 20 February 2012 diff hist +151 We Can See the Universe →The Hertzsprung-Russell "HR" Diagram
- 11:2111:21, 20 February 2012 diff hist +252 We Can See the Universe →We Can See the Milky Way Galaxy
- 11:1511:15, 20 February 2012 diff hist +296 We Can See the Universe →We Can Begin to Understand It
- 11:1111:11, 20 February 2012 diff hist +109 We Can See the Universe →We Can Begin to Understand It
- 11:0211:02, 20 February 2012 diff hist +15 We Can See the Universe No edit summary
- 11:0111:01, 20 February 2012 diff hist 0 N File:Hubble deep field hs-1996-01-d-full.jpg No edit summary current
- 10:5510:55, 20 February 2012 diff hist −2 We Can See the Universe No edit summary
- 10:5410:54, 20 February 2012 diff hist −2 We Can See the Universe No edit summary
- 10:5210:52, 20 February 2012 diff hist +5 We Can See the Universe →Other Galaxies Near and Far
- 10:5010:50, 20 February 2012 diff hist +4 We Can See the Universe →Other Galaxies Near and Far
- 10:4810:48, 20 February 2012 diff hist +385 We Can See the Universe →Other Galaxies Near and Far
- 10:3910:39, 20 February 2012 diff hist +169 We Can See the Universe →Mass of a Celestial Object
- 10:3610:36, 20 February 2012 diff hist +231 We Can See the Universe No edit summary
- 10:3510:35, 20 February 2012 diff hist −9 We Can See the Universe →The Hertzsprung Russle "HR" Diagram
- 10:3010:30, 20 February 2012 diff hist +107 We Can See the Universe →We Can See the Milky Way Galaxy
- 10:2710:27, 20 February 2012 diff hist +6 We Can See the Universe →We Can Begin to Understand It
- 10:2610:26, 20 February 2012 diff hist −3 We Can See the Universe →We Can Begin to Understand It
- 10:2510:25, 20 February 2012 diff hist −21 We Can See the Universe No edit summary
- 10:2510:25, 20 February 2012 diff hist 0 File:Au.jpg uploaded a new version of "File:Au.jpg" current
- 10:2310:23, 20 February 2012 diff hist −36 We Can See the Universe No edit summary
- 10:2310:23, 20 February 2012 diff hist +606 We Can See the Universe No edit summary
- 10:0910:09, 20 February 2012 diff hist 0 N File:Star cluster m41 nmm.jpg No edit summary current
- 10:0910:09, 20 February 2012 diff hist 0 N File:Star birth in small magellanic cloud.jpg No edit summary current
- 10:0910:09, 20 February 2012 diff hist 0 N File:Solar systeme.jpg No edit summary current
- 10:0910:09, 20 February 2012 diff hist 0 N File:Sirius ab polaris a ab b.jpg No edit summary current
- 10:0810:08, 20 February 2012 diff hist 0 N File:Seeing the universe orion taurus canis major.jpg No edit summary current
- 10:0810:08, 20 February 2012 diff hist 0 N File:Rosette ngc2244 nmm.jpg No edit summary
- 10:0810:08, 20 February 2012 diff hist 0 N File:Rosette ballauer 2400.jpg No edit summary current
- 10:0710:07, 20 February 2012 diff hist 0 N File:Orion gendler.jpg No edit summary current
- 10:0710:07, 20 February 2012 diff hist 0 N File:Orion barnard s loop c.jpg No edit summary current
- 10:0610:06, 20 February 2012 diff hist 0 N File:Mw-annot-browse.jpg No edit summary current
- 10:0610:06, 20 February 2012 diff hist 0 N File:Milky way galaxy stubbs.jpg No edit summary current
- 10:0610:06, 20 February 2012 diff hist 0 N File:Mclouds 20 crop.jpg No edit summary current
- 10:0610:06, 20 February 2012 diff hist 0 N File:Magellanic clouds-84mcnaught druckmullerc.jpg No edit summary current
- 10:0510:05, 20 February 2012 diff hist 0 N File:Lmc supernova rem165850 main pia09071-516.jpg No edit summary current
- 10:0510:05, 20 February 2012 diff hist 0 N File:Jupiter and moons.jpg No edit summary current
- 10:0510:05, 20 February 2012 diff hist 0 N File:Hr diagram.png No edit summary current
- 10:0410:04, 20 February 2012 diff hist 0 N File:Gal ultra deep field6992021432.jpg No edit summary current
- 10:0410:04, 20 February 2012 diff hist 0 N File:Galaxy group hickson arp.jpg No edit summary current
- 10:0410:04, 20 February 2012 diff hist 0 N File:Galaxies1 06-09-18 c.jpg No edit summary current
- 10:0310:03, 20 February 2012 diff hist 0 N File:Doublecluster nmm.jpg No edit summary
- 10:0310:03, 20 February 2012 diff hist 0 N File:Betelgeuse star hubble .jpg No edit summary current
- 10:0210:02, 20 February 2012 diff hist 0 N File:Au.jpg No edit summary
- 10:0210:02, 20 February 2012 diff hist 0 N File:Abell39a.jpg No edit summary
- 10:0110:01, 20 February 2012 diff hist +31 Elementary Astronomy No edit summary
- 10:0010:00, 20 February 2012 diff hist +127 Elementary Astronomy No edit summary
- 09:5809:58, 20 February 2012 diff hist +367 Periodic Table of the Elements No edit summary
- 09:5409:54, 20 February 2012 diff hist +40 Periodic Table of the Elements →Origins of Chemical Compounds
- 09:5209:52, 20 February 2012 diff hist −1 Periodic Table of the Elements →Origins of Chemical Compounds
- 09:5209:52, 20 February 2012 diff hist −17 Periodic Table of the Elements →Origins of Chemical Compounds
- 09:5109:51, 20 February 2012 diff hist 0 Periodic Table of the Elements →Origins of Chemical Compounds
- 09:5109:51, 20 February 2012 diff hist +86 Periodic Table of the Elements →Origins of Chemical Compounds
- 09:4909:49, 20 February 2012 diff hist +72 Periodic Table of the Elements →Origins of Elements
- 09:4709:47, 20 February 2012 diff hist +18 Periodic Table of the Elements →Origins of Elements
- 09:4609:46, 20 February 2012 diff hist +12 Periodic Table of the Elements →Elements
- 09:4509:45, 20 February 2012 diff hist +44 Periodic Table of the Elements →Elements
- 09:4409:44, 20 February 2012 diff hist +4 Periodic Table of the Elements →Elements
- 09:4209:42, 20 February 2012 diff hist +327 Periodic Table of the Elements No edit summary
- 09:3609:36, 20 February 2012 diff hist 0 Periodic Table of the Elements No edit summary
- 09:3609:36, 20 February 2012 diff hist 0 N File:Aminoacidsweb3.jpg No edit summary current
- 09:3309:33, 20 February 2012 diff hist −24 Periodic Table of the Elements No edit summary
- 09:3209:32, 20 February 2012 diff hist +131 Periodic Table of the Elements No edit summary
- 09:2709:27, 20 February 2012 diff hist +47 Periodic Table of the Elements →Water
- 09:2609:26, 20 February 2012 diff hist +276 Periodic Table of the Elements No edit summary
- 09:2209:22, 20 February 2012 diff hist −5 Periodic Table of the Elements →Origins of Elements
- 09:2109:21, 20 February 2012 diff hist +4 Periodic Table of the Elements →Origins of Elements
- 09:2009:20, 20 February 2012 diff hist −3 Periodic Table of the Elements →Origins of Elements
- 09:1809:18, 20 February 2012 diff hist +173 Periodic Table of the Elements No edit summary
- 09:1209:12, 20 February 2012 diff hist 0 N File:Water ocean compressed.jpg No edit summary current
- 09:1209:12, 20 February 2012 diff hist 0 N File:Supernova remnant velaweb3.jpg No edit summary current
- 09:1109:11, 20 February 2012 diff hist 0 N File:Stars m103 kpno big.jpg No edit summary current
- 09:1109:11, 20 February 2012 diff hist 0 N File:Starbirth nebula hs-2007-04-a-xlarge web.jpg No edit summary current
- 09:1109:11, 20 February 2012 diff hist 0 N File:Protoplanetary diskm42proplyds.jpg No edit summary current
- 09:1109:11, 20 February 2012 diff hist 0 N File:Periodic table text.jpg No edit summary current
- 09:1009:10, 20 February 2012 diff hist 0 N File:Nebulae.jpg No edit summary current
- 09:1009:10, 20 February 2012 diff hist 0 File:Murchison crop.jpg uploaded a new version of "File:Murchison crop.jpg" current
- 09:1009:10, 20 February 2012 diff hist 0 File:Imilac-meteorite6494-cp.jpg uploaded a new version of "File:Imilac-meteorite6494-cp.jpg" current
- 09:0909:09, 20 February 2012 diff hist 0 N File:Fukang-full-lg.jpg No edit summary current
- 09:0909:09, 20 February 2012 diff hist 0 N File:Elements supernovae.jpg No edit summary current
- 09:0909:09, 20 February 2012 diff hist 0 N File:Elements knots dumbell nebula hs-2003-06-a-large web.jpg No edit summary current
- 09:0809:08, 20 February 2012 diff hist 0 N File:Elements dumbbell noao big.jpg No edit summary current
- 09:0809:08, 20 February 2012 diff hist 0 N File:Dna purines pyrimidines fig2.jpg No edit summary current
- 09:0809:08, 20 February 2012 diff hist 0 N File:Bok globule opo0613a.jpg No edit summary
- 09:0809:08, 20 February 2012 diff hist 0 N File:Atom2.jpg No edit summary current
- 09:0709:07, 20 February 2012 diff hist 0 N File:Aminoacidsweb3.gif No edit summary current
- 09:0709:07, 20 February 2012 diff hist −3 Periodic Table of the Elements →Elements
- 09:0609:06, 20 February 2012 diff hist +1 Periodic Table of the Elements No edit summary