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General Astronomy

- Celestial objects, space, and the physical universe as a whole. Astrophotography and amateur astronomy are welcome!
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Hi everyone Use this topic for posts about ongoing/upcoming stargazing events (e.g., comets, eclipses,...
Apr14-14 07:08 AM
282 104,796
We often have questions about what telescope an aspiring amateur astronomer should buy. The "correct" answer can be...
Apr9-14 07:52 AM
234 80,931
astrophotography, photos Sticky Thread Pinned: Astrophotography photos ( 1 2 3 ... Last)
Looking for advice? Willing to share your expertise with other PF members? Brave enough to share & discuss your...
Dec12-13 08:47 PM
499 147,364
aandc, library, reference Sticky Thread Pinned: A&C reference library ( 1 2 3 ... Last)
Use this topic to post links to helpful/informative websites about astronomy & cosmology.
Apr10-13 11:08 AM
139 89,170
Hellfire requested that I post a list of classic papers that one could use for reference when trying to understand the...
Nov28-12 01:12 AM
17 38,674
Evidently, Hubble is to be left to die. Njorl
Jan19-04 06:14 PM
24 2,356 The Moon's surface, pulled by the Sun and Earth, may...
Jan19-04 04:46 PM
1 1,387
I read recently on the BBC digital news service that Hubble has taken a picture of the Universe that dates back...
Jan19-04 03:31 PM
5 1,047
Great News, NASA's Spirit rover has landed and is transmitting. Probably a timed link
Jan17-04 03:14 PM
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How do you find which direcion you are travelling in space? -Benzun
Jan16-04 07:51 PM
9 1,519
Hi, all. I'm 66, retired and having the time of my life visiting celestial websites. My 'education' consisted of...
Jan16-04 05:31 PM
22 3,361 At NASA-Ames, right here in the Bay Area! March 28 thru April 1, 2004 (a...
Jan16-04 12:54 PM
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Some may be aware that 10 years ago or so, Texas Instruments began manufacturing a display device using...
Jan16-04 06:53 AM
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Jan15-04 05:32 AM
5 1,456 Yay!
Jan15-04 03:53 AM
1 1,711
Need solar info?? look *Here* P.S. Link Referenced out of the Journal 'Science' and the site is pretty good too...
Jan15-04 03:30 AM
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A newly released mosaic image from Hubble, with 4 billion pixels, covering a square of sky about 1/2o wide, with an...
Jan13-04 03:52 PM
5 1,977
I was reading some article about some scientists who were able to 'read' some sort of cosmic background radiation and...
Jan13-04 01:49 AM
3 1,471
Is it possible for an object to orbit a stationary object? It seems to me that the reason for orbits is this: An...
Jan12-04 05:52 PM
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SDSS observations, supported by Subaru and Keck, confirmed that a massive cluster of galaxies is the gravitational...
Jan12-04 11:22 AM
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Take for instance from our Galaxy we look out and gauge everything we see into a decent model of Cosmic understanding,...
Jan10-04 07:05 PM
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The Dutch physicist Gerard 't Hooft has just posted an article which investigates a way in which trillions of...
Jan10-04 01:09 PM
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Another "new" release from NASA. Just click to join and you'll get these every day. So, I won't post these anymore. ...
Jan10-04 11:05 AM
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Some "new" relaeases of interest also here in General Astronomy. Merits discussion in this forum too, I think. Go to...
Jan9-04 01:41 PM
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hey, i was just wondering some stuff about the orbit of planets in our solar system. is when passing jupiter, for...
Jan9-04 08:56 AM
6 1,612
I have read that there is a theory that says you can use the forth dimension to travel long distances in space....
Jan9-04 08:40 AM
0 2,006
As ridiclous and far-fetched as it may seem, say if one is able to get past the event horizon, hypothetically. Do you...
Jan9-04 08:27 AM
14 2,846
if the universe is expanding it means that the universe is moving. if something is moving it has direction and...
Jan8-04 11:33 PM
2 1,072
First of all let me say hello to all. I dont know if this is the place to post this but I'm new "very new". I am a...
Jan8-04 12:24 PM
17 2,410
Hi Guys! Brand new to the forum and believe me, I'm not here to teach but to learn. I have a couple of questions...
Jan7-04 07:14 PM
3 997
Ok, let's say you see a bright light in the night sky. How far away is it? Well, it's bright; so it could either...
Jan6-04 11:46 PM
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I currently understand that quasars are billions of light years away from us. So the light from those distant quasars...
Jan6-04 09:10 PM
4 3,285
I have owned 2 other types of telescopes previously and i am looking to buy a Celestron C-6N reflector. Does anyone...
Jan6-04 01:28 PM
2 1,413
Jan6-04 08:15 AM
1 1,262
Is this article incorrect to attribute the leap second to a slowing in the earth's orbit? I thought I understood this...
Jan4-04 06:34 PM
1 1,476
It seems to me that the discovery that there has to be much more energy in the universe than was previously believed...
Jan3-04 06:34 PM
5 1,051 So is this still being called a moon? ...
Jan2-04 11:33 PM
5 1,686
Hai We say all forces can be explained as the exchange of particles. Thus gravity as the exchange of...
Jan2-04 05:04 PM
2 1,820
alrighty brainiacs... I love all this stuff but I'm still a newbie. I was watching a show on the Science Channel which...
Jan1-04 04:33 PM
What Do I Know?
2 1,111
As part of Beagle 2 interest, I thought I'd post the mailshot I recieve. Latest:Beagle 2 is currently travelling...
Dec31-03 04:52 PM
9 1,234 In this source Alles gives a detailed description of the...
Dec29-03 10:08 PM
19 5,967
What is the mass of a black hole at the size of a tennisball? Can the mass of a black hole vary?
Dec29-03 04:24 PM
1 1,038
In the 1970's, we utilized the Arecibo Radio Antenna to broadcast a message to the depths of space in the hopes of...
Dec28-03 08:41 PM
Adrian Baker
52 7,261
OK kids! Iv'e seen SF stories and quasi scientific testaments ( HAHA) that the star of bethelem could have been a...
Dec28-03 07:19 PM
2 1,263
This question might not be sensible to ask having in mind "The brief history of time" by S. H. since there he claims...
Dec24-03 01:09 AM
5 1,237

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