Space/Science « The HabitableZone

Why black holes don't suck. by ER November 27, 2012 7:01 pm

A 10 y/o plays football against the 49ers. by bowser 2012-11-30 13:52:58
Log in to Reply
- That's relativity. by alcaray 2012-11-30 21:36:57
  Log in to Reply
Your argument is valid, except for the fact that by johannes 2012-11-28 11:27:55
Log in to Reply
- Use or misuse of a word tells us nothing about what the word allegedly describes. by ER 2012-11-28 17:23:20
  Log in to Reply
  - Obsession about definitions? by johannes 2012-11-29 12:44:27
    Log in to Reply
    - Black Hole is a term coined by astronomers. by ER 2012-11-29 16:50:29
      Log in to Reply
      - You wrote that by johannes 2012-11-29 19:43:57
        Log in to Reply
        Newton was 99.99% right. by alcaray 2012-11-29 20:46:45
        Log in to Reply
        :) by TB 2012-11-29 20:07:48
        Log in to Reply
        It is interesting how an honest dialogue often turns towards the absurd. by johannes 2012-11-30 12:46:46
        Log in to Reply
        People saying absurd things will do that. by alcaray 2012-11-30 13:30:50
        Log in to Reply
        Tell me about it. by TB 2012-11-30 13:20:28
        Log in to Reply
- The galaxy is expanding? I don't think so. by alcaray 2012-11-28 12:31:25
  Log in to Reply
  - My reasoning is that by johannes 2012-11-28 14:21:40
    Log in to Reply
    - Objects that close are both red-shifted and blue-shifted... by alcaray 2012-11-28 23:43:45
      Log in to Reply
    - But stars and galaxies of stars were formed by gravity? Tthey formed by contraction. I by RobVG 2012-11-28 16:49:39
      Log in to Reply
      - Contraction, explosion, expansion. Perhaps. by johannes 2012-11-29 12:50:56
        Log in to Reply
    - Why not use your reasoning, instead, by ER 2012-11-28 16:28:26
      Log in to Reply
      - The concept of an experimental proof is very simple. by johannes 2012-11-29 12:41:53
        Log in to Reply
        No, Johannes. by ER 2012-11-29 13:10:59
        Log in to Reply
        Hmm, interesting by johannes 2012-11-29 15:00:27
        Log in to Reply
        Why make things so complicated? by alcaray 2012-11-29 16:51:36
        Log in to Reply
        The calculations? by johannes 2012-11-29 19:53:49
        Log in to Reply
        The calculations do not need to explain any theory to any layman. by alcaray 2012-11-29 20:49:47
        Log in to Reply
        You are assuming that it is the “mass” that causes the gravitational field. by johannes 2012-11-30 12:46:02
        Log in to Reply
        No I am not. by alcaray 2012-11-30 13:35:11
        Log in to Reply
        OK now that you read about it. by johannes 2012-11-30 20:39:06
        Log in to Reply
        I was hoping you would read about it. by alcaray 2012-11-30 21:11:50
        Log in to Reply
        I read it but did not get the an answer to my question. by johannes 2012-11-30 21:53:09
        Log in to Reply
        Your shields are impervious. I yield. by alcaray 2012-12-01 17:35:45
        Log in to Reply
        I KNOW!!!! johannes....you aren't even trying to see a different viewpoint. You are convinced you are right, and on that ... by Jody 2012-12-01 19:33:40
        Log in to Reply
        The shortest possible answer... by TB 2012-11-30 21:06:24
        Log in to Reply
        You have a good question. by johannes 2012-11-30 21:54:54
        Log in to Reply
        Correction by johannes 2012-11-29 15:01:21
        Log in to Reply
Well done, 4.0, except they do seem to suck, a lot, and blow, a little. by bowser 2012-11-27 23:21:11
Log in to Reply
- That's true, but... by ER 2012-11-28 04:49:18
  Log in to Reply
Excellent, thanks n/t by RobVG 2012-11-27 21:34:58
Log in to Reply

Why black holes still don't suck. by ER November 29, 2012 7:58 am

As with all conglomerations of matter, there is a center of gravity. by bowser 2012-11-30 01:55:03
Log in to Reply

A 12kg projectile is fired by Jody November 27, 2012 6:29 pm

The shape would be a factor, too. by bowser 2012-11-29 00:30:48
Log in to Reply
TA DA!!!!!!! You guys rock!!! by Jody 2012-11-28 17:31:42
Log in to Reply
What mischief are you up to Jody. I hope this doesn't involve Texas secession. by FrankC 2012-11-27 23:11:46
Log in to Reply
- LMAO!!! Frank...I'll save you! by Jody 2012-11-28 17:31:05
  Log in to Reply
On earth, at sea level, at the equator, fired towards the West, at a temperature of 80 degrees F, and 50% humidity? by alcaray 2012-11-27 22:21:50
Log in to Reply
- It is strictly about the weight ratio! by Jody 2012-11-28 17:32:50
  Log in to Reply
You have two identical bullets ... by RobVG 2012-11-27 21:00:13
Log in to Reply
- Anyone? Beuller? Beuller?... n/t by RobVG 2012-11-28 18:07:04
  Log in to Reply
  - They did it on mythbusters. by alcaray 2012-11-28 23:34:04
    Log in to Reply
12.5 Kilometers, 50 Kilometers by RobVG 2012-11-27 20:09:15
Log in to Reply
- Houston, we have a problem. An order of magnitude problem. by ER 2012-11-27 20:36:13
  Log in to Reply
  - I see my mistake. by ER 2012-11-27 20:40:55
    Log in to Reply
    - Corrected, in metric, our results agree. by ER 2012-11-27 20:58:58
      Log in to Reply
    - I used a ballistic trajectory calculator :p n/t by RobVG 2012-11-27 20:53:17
      Log in to Reply
      - You got the right answer. by ER 2012-11-27 21:00:51
        Log in to Reply
        Thanks for showing your work. by RobVG 2012-11-27 21:04:12
        Log in to Reply

Moon Grazes Jupiter by ER November 28, 2012 8:50 pm

I noticed their proximity last night. by alcaray 2012-11-28 22:06:21
Log in to Reply

Warp Drive breakthrough at NASA by BuckGalaxy November 28, 2012 12:01 pm

As soon as we figure out how to make a "negative vacuum energy ring" we will have it made. by alcaray 2012-11-28 12:40:39
Log in to Reply
- Free enterprise can do it. by ER 2012-11-28 16:21:48
  Log in to Reply

Are there any educated guesses as to what Curiosity has found? by bowser November 22, 2012 9:15 pm

Looks like it was a misunderstanding by BuckGalaxy 2012-11-28 12:04:37
Log in to Reply
Well, below I guessed... by alcaray 2012-11-23 01:31:56
Log in to Reply
- No, I'm tuned in... by podrock 2012-11-23 20:37:45
  Log in to Reply
  - Now there's a rumor that HUMANOIDS have been found there by Lindy 2012-11-24 18:35:13
    Log in to Reply
    - That's not the SAME Obama, is it? by caspar 2012-11-26 17:34:10
      Log in to Reply
    - Lindy, that was Jimmy Hoffa, and all that's left is his DNA. by bowser 2012-11-24 22:10:40
      Log in to Reply
- I read those, and think they are great guesses. by bowser 2012-11-23 09:41:08
  Log in to Reply
  - Don't get your panties in a wad.... by Lindy 2012-11-23 17:27:28
    Log in to Reply
    - Magic crystals, no doubt. by alcaray 2012-11-23 20:20:04
      Log in to Reply

Nested Universe? by RobVG November 26, 2012 9:28 am

I'm going out on a limb. by bowser 2012-11-26 22:22:13
Log in to Reply
More cooped than nested, I think. by alcaray 2012-11-26 18:45:44
Log in to Reply
here's my deal... by FrankC 2012-11-26 14:17:29
Log in to Reply
- If the mass goes to another dimension... by alcaray 2012-11-26 18:47:14
  Log in to Reply
  - By persistent I assume you mean we have never seen one of them stop functioning. by FrankC 2012-11-27 14:27:30
    Log in to Reply
    - Then your theory states that the mass hangs around inside the black hole for a while... by alcaray 2012-11-27 15:43:48
      Log in to Reply
      - Not necessarily by FrankC 2012-11-27 18:52:15
        Log in to Reply
        If the mass immediately goes there, then the mass immediately is not here. by alcaray 2012-11-27 19:40:45
        Log in to Reply
        So after a black hole is formed, what happens to the additional mass it consumes? by FrankC 2012-11-27 20:08:10
        Log in to Reply
        It's mass, demonstrably, is here. The effects of its mass are apparent. by alcaray 2012-11-27 22:17:49
        Log in to Reply
- Well, by RobVG 2012-11-26 15:05:44
  Log in to Reply
Well, this Universe has at least one boarder, me! by bowser 2012-11-26 13:07:33
Log in to Reply
- Maybe the universe is finite and unbounded. by ER 2012-11-26 13:26:40
  Log in to Reply
  - If the inflationary model of the universe continues to hold... by alcaray 2012-11-26 18:57:29
    Log in to Reply
    - Even without inflation, by ER 2012-11-26 20:53:23
      Log in to Reply
      - You don't need to hold a picture of a hypersphere in your head. by alcaray 2012-11-26 21:14:52
        Log in to Reply
        Inflation and Expansion are not the same thing. by ER 2012-11-26 22:43:42
        Log in to Reply
        Inflation isn't that new (unless you are trying to brag on how old you are). by alcaray 2012-11-26 23:10:32
        Log in to Reply
        And now the expansion is accelerating by RobVG 2012-11-27 09:08:20
        Log in to Reply
        I don't know if its actually bragging... by ER 2012-11-27 06:12:26
        Log in to Reply
  - You are certainly correct, especially with "may". by bowser 2012-11-26 13:39:42
    Log in to Reply
    - I don't think there is an "outside". by ER 2012-11-26 18:26:45
      Log in to Reply

Habitable Zone Cited in Physics Forums! by ER November 25, 2012 8:04 pm

It would be more exciting if a novamaker was heading in our direction. by alcaray 2012-11-25 21:17:11
Log in to Reply
- I think that was what Clarke had in mind. by ER 2012-11-26 06:04:33
  Log in to Reply
  - When I read it, it sounded like... by alcaray 2012-11-26 12:33:02
    Log in to Reply
Excellent! by podrock 2012-11-25 20:55:48
Log in to Reply

Trouble in Aquila - a mystery solved? by ER February 19, 2007 10:23 am

Further evidence of a birefringent universe? by Bob Clark 2007-04-13 10:47:04
re: Trouble in Aquila - a mystery solved? by Robert Clark 2007-02-19 10:45:31
- re: Trouble in Aquila - a mystery solved? by ER 2007-02-19 10:57:54

"The time is with the month of winter solstice... by ER November 14, 2012 8:09 am

We had the same configuration of planets back in 1989 by Lindy 2012-11-23 18:11:57
Log in to Reply
You sound like the kind that even has problems with astrology! by bowser 2012-11-14 08:15:17
Log in to Reply
- I have no problems with astrolgy... by ER 2012-11-14 08:47:47
  Log in to Reply
  - Well, then, I'll bet you question homeopathy. You just sound like a doubter. by bowser 2012-11-14 09:16:45
    Log in to Reply
    - The placebo effect is very powerful and useful. If homeopathy does it for you then that's fine. by alcaray 2012-11-14 13:44:57
      Log in to Reply
      - As with astrology, Benny Hinn, Oral Roberts, acupuncture, etc. by bowser 2012-11-14 15:07:04
        Log in to Reply
    - I've got nothing against homeopaths. by ER 2012-11-14 09:22:02
      Log in to Reply
      - And my sign is Virgo. by ER 2012-11-14 09:50:58
        Log in to Reply
        That's it. The Virgin. by bowser 2012-11-14 15:08:26
        Log in to Reply

What is the Fundamentalist age of the Earth. by ER November 22, 2012 6:37 am

I agree. Too vulnerable to ridicule. Can't be defended Biblically. by bowser 2012-11-22 13:15:45
Log in to Reply

Mast Cam by RobVG November 21, 2012 9:20 am

Page 127 of 159«1...125 126127128 129...159 »

Recent posts

The Control Panel