Inside a black hole.

[alokmohan]

Happy new year.Lets not visit black hole,too risky.

 

[alokmohan]

Falling into a black hole is a strange affair. Because the hole's gravity distorts space-time, a far-off observer watching an object crossing the event horizon sees time for that object appear to slow down — a clock falling into a black hole would appear, from the outside, to tick ever slower. At the horizon itself, time stops, and the object stays frozen there for the remaining lifetime of the Universe. <br />But this isn't how things seem to the in-falling object itself. Indeed, if the black hole is big enough, nothing noticeable happens when a spaceship crosses its event horizon — you could stray inside without realizing. Yet once inside, nothing can save you from being crushed by the hole's gravity sooner or later. <br /><br />The article gives a few pointers for delaying the inevitable (being crushed into a singularity). According to Geraint Lewis from the University of Sydney in Australia, the "longest road" once a space ship is past the black hole's event horizon is free fall starting from rest. "If you cross the event horizon on one of the shorter roads, you can fire your rocket to move you on to the longest road," he says. Assuming a super-massive black hole, such as the one that's believed to reside at the center of the Milky Way, the longest survival time "might be hours"—perhaps enough to learn to play a new tune on the flute.Falling into a black hole is a strange affair. Because the hole's gravity distorts space-time, a far-off observer watching an object crossing the event horizon sees time for that object appear to slow down — a clock falling into a black <br /><br />The article gives a few pointers for delaying the inevitable (being crushed into a singularity). According to Geraint Lewis from the University of Sydney in Australia, the "longest road" once a space ship is past the black hole's event horizon is free fall starting from rest. "If you cross the event horizon on one of the shorter roads, you can fire your rocket to move you on to the lon

 

[agnau]

If you want to know what the inside of a blackhole looks like, pull up the background radiation chart. It is my conjecture (and that means opinion, not proof) that when the bigbang occurred, it was an exploding blackhole. So called "Dark Matter" is the matter that existed outside of the blackhole's explosion and the center of our universe is not the center of the containing universe.<br /><br />A second personal opinion: I still believe that if you follow it all back far enough, there must have been an intelligent designer to get everything started and that intelligent designer still exists.

 

[derekmcd]

"<i>...it was an exploding blackhole.</i>"<br /><br />The whole concept of a black hole precludes it from 'exploding'.<br /><br />"<i>So called "Dark Matter" is the matter that existed outside of the blackhole's explosion and the center of our universe is not the center of the containing universe.</i><br /><br />Assuming the Universe is the expansion of a singularity, nothing (including dark matter) can exist 'outside'.<br /><br />"<i>A second personal opinion: I still believe that if you follow it all back far enough, there must have been an intelligent designer to get everything started and that intelligent designer still exists.</i><br /><br />I'll leave this one alone with the exception that "if you follow it all back far enough..." there is ZERO proof of an intelligent designer. Not anything even remotely close to proof, fact, evidence... ID is mere conjecture and will always remain so until the actual designer presents him/herself. <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>

 

[qso1]

alokmohan:<br />Happy new year.Lets not visit black hole,too risky.<br /><br />Me:<br />And a belated happy new years to you. I don't think we have to worry too much about visiting a black hole considering we still haven't even made it to mars. Future generations will have to ponder your advice and hopefully for them, they will take your advice. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>

 

[alokmohan]

Fine and witty reply.But even if you fall will it be that you come out through a white hole.Or time ends in singularity because space time ceases at singularity.Or are there black holes at all?These are very disturbing questions.

 

[MeteorWayne]

Again, while there is evidence for black holes, there is no evidence for white holes whatsoever. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[kyle_baron]

<font color="yellow"><br />while there is evidence for black holes, there is no evidence for white holes whatsoever.</font><br /><br />I thought Einstein's Field equations were mathematical evidence (or solutions) for white holes:<br /><br />http://en.wikipedia.org/wiki/White_hole <div class="Discussion_UserSignature"> <p><font size="4"><strong></strong></font></p> </div>

 

[MeteorWayne]

I was referring to observational evidence. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[nexium]

If your space ship is 100 million kilometers outside the event horizon of a super massive black hole in approximately a circular orbit, you probably do not have enough fuel to escape. Perhaps 100 million tons of fuel is needed to escape. Ship sensors will be detecting strange stresses on the hull, perhaps alarming stresses, if the ship is fragile. You will also notice strange feelings in your body, when oriented with your head or feet toward the black hole. These are gravity differences. Gravity is perhaps one part per million stronger closer to the black hole than it is one meter farther away. This is important if the gravity toward the black hole is one million g. This phenomona is sometimes called tide effect. Tide effect will become deadly as you approach the singularity, even outside the event horizon.<br />Worse, the super massive black hole likely has an accreation disk, with dust and smaller particles orbiting at several tenths of light speed. Your space ship will pass though this disk perhaps once per day. Radiation will overwhelm any shields we can make today, resulting death in about one day. We can likely make somewhat better shields in the future, but closer to the singularity the radiation gets more intense. Think galactic cosmic rays, but millions of times more of them than we experienced near Earth's moon. The bottom line is we can not reach the whitehole alive if there is a white hole. Neil

 

[alokmohan]

Astronomers are hunting an elusive target: rogue black holes that have been ejected from the centers of their home galaxies. Some doubted that the quarry could be spotted, since a black hole must be gobbling matter from an accretion disk in order for that matter to shine. And if a black hole is ripped from the core of its home galaxy and sent hurling into the outskirts, the thinking goes, then its accretion disk might be left behind. <br /><br />New calculations by theorist Avi Loeb (Harvard-Smithsonian Center for Astrophysics) give black hole hunters a reason to hope. Loeb showed that, generically, a black hole ejected from the center of a galaxy could bring its accretion disk along for the ride and remain visible for millions of years. <br /><br />"Matter in the disk is swirling around the black http://www.spaceref.com/news/viewpr.nl.html?pid=22698<br />

 

[alokmohan]

http://www.newkerala.com/news.php?action=fullnews&id=32572Home > News > US News <br /><br /><br /><br />Black hole ejected from galaxy's centre could remain visible for years<br /><br />Washington, May 24 : Harvard-Smithsonian Center for Astrophysics researcher Avi Loeb has derived calculations that show that a black hole ejected from the centre of a galaxy could remain visible for millions of years.<br /><br />"Matter in the disk is swirling around the black hole much faster than the typical black-hole ejection speed. That matter is so tightly bound that it follows the black hole like a herd of sheep around a shepherd," said Loeb.<br /><br />For long, astronomers have been hunting for rogue black holes that have been ejected from the centers of their home galaxies. <br /><br />While some predicted that it could be spotted, since a black hole gobbled matter from an accretion disk in order for that matter to shine, others said a black hole ripped from the core of its home galaxy and sent hurling into the outskirts, would leave its accretion disk behind.<br /><br />But now, new calculation by Loeb has shown otherwise.<br /><br />In the scenario examined by Loeb, two galaxies collide and merge, and the spinning, supermassive black holes at the core of each galaxy coalesce, emitting powerful gravitational radiation in a preferred direction.<br /><br />Computer simulations showed that the net momentum carried by the radiation gives the remnant black hole a large kick in the opposite direction. The black hole recoils at speeds of up to ten million miles per hour—fast enough to traverse an entire galaxy in a cosmically short time of only ten million years.<br /><br /> <br /> <br />

 

[alokmohan]

Black holes have no hair.The imploding satar may have mountain on it but after it becomes black hole,the surface will be smooth.John Wheeler invented a pithy phrase to describe it:a black hole has no hair-hair being anything that might stick out of the black hole to reveal the details of the star from which it was formed.` It is hard for most`` of Wheelers `````colleagues to believe `````that ``this conservative man was aware his phrases prurient interpretation.Wheelers phrase quickly took hold,despite resistance from editor in chief of physical review,the then.In France and USSR where translations of the term was regaeded as unsavory,the resistance lasted no longer.By the late seventies ,however,Wheelers phrase was being used and publicized by physicists world wise.,in all languages without a flicker of grin.`

 

[majornature]

I don' think black holes are "holes' at all. I think they are flat "spinning stars" with intense gravity compressed into a ring or disc per se. There space-time is not effected. it remains infinite. <div class="Discussion_UserSignature"> <font size="2" color="#14ea50"><strong><font size="1">We are born.  We live.  We experiment.  We rot.  We die.  and the whole process starts all over again!  Imagine That!</font><br /><br /><br /><img id="6e5c6b4c-0657-47dd-9476-1fbb47938264" style="width:176px;height:247px" src="http://sitelife.space.com/ver1.0/Content/images/store/14/4/6e5c6b4c-0657-47dd-9476-1fbb47938264.Large.jpg" alt="blog post photo" width="276" height="440" /><br /></strong></font> </div>

 

[pyoko]

Black holes should be banned, and deemed illegal. I forward my proposition for the immediate formation of the BHB (Black Hole Ban) association. This immediate public-funded action shall impede the formation of more supermassive black holes, and shall strive to aim towards the final goal of mass-erradication. <br />People knowingly supporting or funding the formation of black holes shall be imprisoned (watch out, CERN!). <div class="Discussion_UserSignature"> <p> </p><p> </p><p><span style="color:#ff9900" class="Apple-style-span">-pyoko</span> <span style="color:#333333" class="Apple-style-span">the</span> <span style="color:#339966" class="Apple-style-span">duck </span></p><p><span style="color:#339966" class="Apple-style-span"><span style="color:#808080;font-style:italic" class="Apple-style-span">It is by will alone I set my mind in motion.</span></span></p> </div>

 

[dragon04]

One question I've always had is do we know, or is it sure that acceleration inside the event horizon is more than 1g?<br /><br />Does the inherent time dilation make acceleration more than 1g?<br /><br />Are the resulting gravitational influences and forces so drastic on a scale of a couple or few meters that we would be "spaghettified"? Or would we just take an Eternity falling towards the singualrity? <div class="Discussion_UserSignature"> <em>"2012.. Year of the Dragon!! Get on the Dragon Wagon!".</em> </div>

 

[pyoko]

What does the constant '1g' have to do with black holes on a cosmic scale? <div class="Discussion_UserSignature"> <p> </p><p> </p><p><span style="color:#ff9900" class="Apple-style-span">-pyoko</span> <span style="color:#333333" class="Apple-style-span">the</span> <span style="color:#339966" class="Apple-style-span">duck </span></p><p><span style="color:#339966" class="Apple-style-span"><span style="color:#808080;font-style:italic" class="Apple-style-span">It is by will alone I set my mind in motion.</span></span></p> </div>

 

[alokmohan]

agnau,you have staded improper thing.A second personal opinion: I still believe that if you follow it all back far enough, there must have been an intelligent designer to get everything started and that intelligent designer still exists. Intelligent design is anti science.One of basic tenets of intelligent design is that God knows.Science is bunk. <br />

 

[alokmohan]

But see the other threads on black hole.

 

[majornature]

alokmohan:<font color="yellow">agnau,you have staded improper thing.A second personal opinion: I still believe that if you follow it all back far enough, there must have been an intelligent designer to get everything started and that intelligent designer still exists. Intelligent design is anti science.One of basic tenets of intelligent design is that God knows.Science is bunk. </font><br /><br />That's similar to my post in phenomena. <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <font size="2" color="#14ea50"><strong><font size="1">We are born.  We live.  We experiment.  We rot.  We die.  and the whole process starts all over again!  Imagine That!</font><br /><br /><br /><img id="6e5c6b4c-0657-47dd-9476-1fbb47938264" style="width:176px;height:247px" src="http://sitelife.space.com/ver1.0/Content/images/store/14/4/6e5c6b4c-0657-47dd-9476-1fbb47938264.Large.jpg" alt="blog post photo" width="276" height="440" /><br /></strong></font> </div>

 

[nexium]

For one solar mass black holes the local accelleration due to gravity is millions of g just outside the event horizon. My guess is slightly higher just inside the event horizon. At some distance 1 g may be the observed g due to dialation near the event horizon.<br />More massive black holes have lower g near the event horizon, but not as low as 1g for a local observer. Neil

 

[alokmohan]

Better the black hole,better to go.

 

[alokmohan]

Kip Thorne visited Garantus.It was billion solar mass ,was nice to hang on.