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Pinned: Astrophotography ( 1 2 3 4 ... Last) Phobos	Y 10:39 AM glappkaeft	462	125,318
Pinned: Astronomy events schedule ( 1 2 3 4 ... Last) Phobos	May17-13 09:51 PM davenn	271	87,282
Pinned: A&C reference library ( 1 2 3 4 ... Last) Phobos	Apr10-13 11:08 AM marcus	139	73,197
Pinned: Planning to buy a first telescope? ( 1 2 3 4 ... Last) turbo	Feb26-13 09:59 AM Chronos	219	60,135
Pinned: Classic Papers in Astronomy and Cosmology ( 1 2) SpaceTiger	Nov28-12 01:12 AM stargazer3	17	30,878
What gives a Black Hole its tremendous gravity? DHF	Y 07:21 AM DHF	5	320
Meteor Impacts on the Moon Astronuc	May20-13 09:45 PM berkeman	4	268
Moon's orbit and tidal locking DHF	May20-13 03:34 PM DHF	2	194
At which distance can you see Saturn's ring with a naked eye? Tiger Blood	May20-13 01:42 PM 94JZA80	2	327
One-way ticket to Mars ( 1 2 3 4 ... Last) Borg	May20-13 08:13 AM DHF	72	7,892
why does the world spin? mrblint	May18-13 12:02 PM HallsofIvy	12	1,255
Stars and Time imageek	May17-13 08:20 AM imageek	7	475
Earth's axial tilt and the shadow from the Sun Rangertab1	May16-13 08:50 PM Rangertab1	8	489
Are black holes bound to galactic revolution? CowedbyWisdom	May16-13 12:21 PM snorkack	4	518
question about eddington luminosity seeker7	May16-13 10:58 AM LastOneStanding	1	756
Shooting images through window pane glass solarblast	May14-13 01:24 PM solarblast	3	514
Why does everything in the Universe form a ball or Sphere? blackstar5000	May12-13 06:44 PM Fredrik	6	930
What is the shape of a Black Hole? blackstar5000	May12-13 06:15 AM blackstar5000	3	993
What to study to be an astronomer Kateenaclarke	May11-13 04:01 PM mathman	1	550
is distant starlite coherant? brianhurren	May10-13 10:17 PM davenn	8	606
The most simple explanation for origination of spiral galaxies? C Edward Solomo	May8-13 06:16 PM Vanadium 50	4	801
LST formula mishima	May7-13 08:23 PM Mordred	13	520
The Ecliptic and the Galactic Planes EskWIRED	May6-13 06:09 PM EskWIRED	4	781
Hubble's Redshifts La_Mettrie	May4-13 04:29 PM Naty1	7	1,554
If doppler shift can be caused by gravity ... hog	May3-13 06:44 PM elevin	9	1,474
How deep would you have to dig into Mars to reach Earth's gravity? Zaku2	May3-13 01:22 PM eachus	15	1,548
How to measure the location of Gamma ray burst ? goldfishCUPHY	May3-13 03:16 AM mfb	3	788
does gravity affect time on different celestial objects alfnzo	May2-13 12:46 PM HallsofIvy	3	916
Saturn hurricane spotted by Cassini Mordred	May1-13 09:24 AM Mordred	2	907
Russian Meteor question DFTBA	Apr30-13 07:17 AM DFTBA	2	1,071
Using the Celestron C90 telescope guitarphysics	Apr29-13 05:42 AM Bandersnatch	9	925
Solar and geomagnetic field interaction with or without solar wind rewtnode	Apr28-13 07:46 PM davenn	7	787
If the universe is infinite, then the big bang theory can't be correct lundyjb	Apr28-13 05:45 PM phinds	2	2,033
Did the Chelyabinsk meteor really "explode"? C Crikey	Apr26-13 12:07 PM russ_watters	4	1,258
Why are scientists puzzled at the time of the universe that we are in? student34	Apr25-13 09:23 PM cepheid	2	1,258
Can this planet have an ocean of water? willstaruss22	Apr25-13 12:40 PM mfb	11	1,132
As the sun turns nsaspook	Apr25-13 02:54 AM davenn	1	734
How can two Black holes fusion and consist a supermassive Black Hole Astro-Anouar	Apr24-13 01:14 PM Astro-Anouar	7	978
Anti-matter Black Hole chasrob	Apr24-13 02:08 AM ImaLooser	8	1,149
Pictures from the Hubble Space Telescope Naty1	Apr23-13 07:35 AM Greg Bernhardt	2	999
Need a good analogy of finding life in the universe ( 1 2 3) uperkurk	Apr21-13 03:52 PM 2milehi	36	4,102
Kepler mission announces possibly habitable planets found (18 April) marcus	Apr20-13 05:36 AM mfb	6	1,347
PhoneSat launching today! Greg Bernhardt	Apr17-13 11:38 AM mfb	1	998
Hubbles law and expansion of the universe trot	Apr16-13 08:13 AM Mordred	8	1,343
Origin of the Moon and it's Retreat enceladus_	Apr16-13 07:49 AM enceladus_	5	1,161

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