I guess idiots may be the only ones being allowed to post here.

An object having a certain mass needs to have a particular speed in order to escape the earth's gravitational field.

In order to obtain such a speed, you will need to have energy for this. A rocket needs propulsion in order to lift up from the ground and possibly leaving the earth. To escape the gravitational field of the sun, the speed of the object needs to be even higher.

First - energy is produced by the cells in your body by means of the heat they produce from converting mass obtained from the processing of food and distribution of such reserves throughout the body. Calories (in kilos) may be used to display the amount of energy which may be found in certain kinds of food.

Second - what terminology is then used to measure or display energy units for escaping objects due to their speed? It is just that easy to have a look at the mass for a given object and tell that there is a specific amount of energy needed in order for such an object to be able to obtain a certain speed.

Still no fision or fusion being mentioned in all of this. They are the most effective ways of converting mass into energy.

Any suggestions welcome.

There are an inertial mass and a gravitational mass. Galileo demonstrated that they are equal by dropping weights from the Leaning Tower of Pisa.
Tullio

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This information may have been posted elsewhere, but I couldn't find it.

http://www.cnn.com/2011/US/06/15/black.holes.nasa.chandra/index.html?&hpt=hp_c1

I love astrophysics!

Steve

That´s very important article. Thank you for posting it Here!

Black Hole Unleashes Extraordinarily Bright X-Ray Burst


image from another article.

black holes get crazy


Lynn

Isn't there a theory somewhere that says that the big bang was in fact a single black hole, that had swallowed up the entire universe. It got to the stage where it couldn't contain all the matter any more and just exploded?

That's my story and I'm sticking to it. It's the only explanation that solves everything. So about 20 billion years ago we were sitting around at our computers typing these same silly theories, like we really have a clue.

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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.

I read this black hole thing and now i know less than i did when i started to read but it was interesting

I read this black hole thing and now i know less than i did when i started to read but it was interesting

I feel the same. There a millions of them in this universe. They also give physicists a headache. I think black holes are supposed to have a lifespan--perhaps a good portion of the age of the universe. They could be a portal to anything. Most interesting to me is the idea that time stops dead in its tracks past the event horizon.

I didn't think black holes could explode, they just become weaker and eventually
evaporate. When matter gets drawn into a black hole it's torn apart into its smallest
subatomic components eventually the energy in the black hole gets
emitted in the form of electromagnet radiation which over time causes this
black hole to become weaker and weaker. When the black hole becomes very weak,
or as they say very old, you can pass through it without being torn apart.
Some say on doing this you can experience some very weird events....
...anyone fancy a trip to the "black hole of Calcutta"?

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The Kite Fliers

--------------------
Kite fliers: An imaginary club of solo members, those who don't yet
belong to a formal team so "fly their own kites" - as the saying goes.

Just because we can't define it in everyday terms, we just throw up our hands and say who knows. Going back to watch SG1, everything made sense there. :-)

I've thought about this for years. Our best guess is that black holes will eventually evaporate, but that will take trillions of years. Eventually in our universe, there may be nothing left but black holes. I have often wondered if there is such a thing as a super, super, super massive black hole. If a black hole has infinite density, perhaps there is some point where the pure mass collapses into energy via E=MC². It can't really collapse any further, but perhaps in can convert to pure energy, hense, explode. That may be one possible explanation for the universe. A really huge black hole collapsed in on itself, and here we are! :D

Steve

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Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website

Hi, SciManStev.

I guess you do not know this, but many years ago I used "Burnham's Celestial Handbook" to locate the visible star which is being associated with the radio source Cygnus X-1 and accompanying it in a close binary. I used a 2.4 inch refractor in order to locate this object.

The visible star is a 9'th magnitude blue-white supergiant star. It is being orbited (and vice versa indeed) by an invisible object which is thought to be a black hole.

Probably this black hole once was a supergiant star which exploded in a supernova. The remant is not visible, however. The remnants of the star collapsed into either first a neutron star, next a black hole, or perhaps directly into a blach hole instead.

The supernova explosion which ultimately created this black hole threw much of the original star's material out into space, leaving only the central core behind, perhaps still some 10-20 solar masses, in fact.

The remaining material collapsed and contracted and ultimately ended up in a black hole. For some reason, excess of mass within a certain area, really inside the "event horizon" of such an object leads to the warping of time and space. Also light is unable to escape such a black hole, except for radiation which emanates from or through certain points or places in such a black hole.

Mentioning the "event horizon" reminds me about the Schwarzschild radius (first name is Karl).

I was able to determine the correct name using Google, but will have to check the information in the articles first.

One reference is http://en.wikipedia.org/wiki/Schwarzschild_radius

Over time such a black hole may eventually evaporate, but that definitely should not be happening very fast.

If such an object should happen to come close to our own solar system, we would probably be doomed.

Everyone, Here is another mind bender about black holes.

Supermassive black hole shreds a star that wandered too close.

Please make sure you watch the computer simulation.


Black Hole Caught Red-Handed in a Stellar Homicide

PASADENA, Calif. – Astronomers have gathered the most direct evidence yet of a supermassive black hole shredding a star that wandered too close. NASA's Galaxy Evolution Explorer, a space-based observatory, and the Pan-STARRS1 telescope on the summit of Haleakala in Hawaii were among the first to help identify the stellar remains.

~more~

Theoretical Physics is theory based, right? Like a playground for the brain...
(this is gonna be kinda rambly)

Now this is a whopper doozie of a theory, probably as wrong as I can get or as out in left field as I can get but hey, the shade trees are over here and I like it lol

All this hungry talk (black holes are ravenous, they eat anything they can catch in their gravity field) got me thinking. When anything eats, there is a secondary product. (ewww lol) Where does all this matter go once it is torn into little mollecular bits and transformed into it's most base elements?

hmmm...

When a star implodes/explodes or however it does and makes a singularity, couldn't that punch a hole (so to speak) and make a point of here/there?
Not necessarily like a window, break it and you have access to the other side...
more like Star blows up, creates such a big bang a singularity is made and punches a hole to somewhere far away (wormhole) and then exits out of a very unstable White Hole?

Before anyone says it is impossible though... wasn't the Higgs-Bosun hee-hawed for a while and said to not be real too? There is so much in the universe.
I wish I would have taken more interesting classes ^^
This kind of thinking kinda trips my trigger lol

There is a school of thought expressing pretty much your idea. There is another that proposes that eventually all of the black holes will consume all of the matter in the universe and when that happens they will over load and BOOM another big bang and a new beginning. I hope I get a better body next time.

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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.

All this hungry talk (black holes are ravenous, they eat anything they can catch in their gravity field) got me thinking. When anything eats, there is a secondary product. (ewww lol) Where does all this matter go once it is torn into little mollecular bits and transformed into it's most base elements?

The energy inside the black hole gradually gets emitted in the form of electromagnetic radiation.
To this end, once the black hole ceases to draw in any new matter it gradually
weakens and becomes depleted due to this emitted radiation.

---

The Kite Fliers

--------------------
Kite fliers: An imaginary club of solo members, those who don't yet
belong to a formal team so "fly their own kites" - as the saying goes.

When a star implodes/explodes or however it does and makes a singularity

The question on singularity here is always an interesting phenomena.

Does the singularity in a large black hole posses more potential energy than
one inside a small black hole i.e. is a large black hole more liable to
explode outwards than that of the potential for a much smaller black hole to
do the same. Logic would have it that yes, a very large black hole possibly could explode.
But why?....actually I can'y think of a reason why it should unless
at the point of singularity processes are still going on that are creating
energies in excess of that which this singularity can eventually keep control
over. My suspicions are that at the point of singularity multiple dimensions
have a greater influence on what is happening at this point. Here possibly as
the energy levels at the singularity build up this open up more dimensions
for the energy to expand within. The universe has been around long enough now
for a black hole to have exploded at some stage, is there any evidence of such
an event?

---

The Kite Fliers

--------------------
Kite fliers: An imaginary club of solo members, those who don't yet
belong to a formal team so "fly their own kites" - as the saying goes.

A black hole explosion may be triggered by size, and therefore gravity. if you think of a black hole as one solid particle, perhaps there is a mass associated with it collapsing in on itself, since it can't shrink any further, as it is a solid particle, it changes to energy via E=MC². Once expanding outward, it could return to mass. It is possible that the universe was started in this way. If so, the amount of mass to trigger a collapse of a black hole must be enormous.

Every other object in the universe is a collection of particles. Even a neutron star is neutrons. there is still space between the particles that can condence further. With a black hole, there is no space between the particles, hence one particle. That could explain why light can't escape it. Light can be thougt of as particles (photons), so there is no room for them to form with only one particle.

The above is just a guess. I really don't know.

Steve

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Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website

That could explain why light can't escape it. Light can be thougt of as particles (photons), so there is no room for them to form with only one particle.

The above is just a guess. I really don't know.

The question of light being a particle so cant escape. This strangeness
occurs at the event horizon well before the photon becomes part of the
singularity....I assume, Steve. But still, what actually came to mind here
when you mentioned the above was the duality aspect of light. Light acts as
both a wave and as a particle too, so although the photon can't escape the
black hole as a particle perhaps it can escape as a wave though?
If this was the case, then why does this wave not revert back to a photon
when it hits the human eye?...or does it but at a much reduced energy level
so becomes part of the invisible light spectrum.

---

The Kite Fliers

--------------------
Kite fliers: An imaginary club of solo members, those who don't yet
belong to a formal team so "fly their own kites" - as the saying goes.

That could explain why light can't escape it. Light can be thougt of as particles (photons), so there is no room for them to form with only one particle.

The above is just a guess. I really don't know.

The question of light being a particle so cant escape. This strangeness
occurs at the event horizon well before the photon becomes part of the
singularity....I assume, Steve. But still, what actually came to mind here
when you mentioned the above was the duality aspect of light. Light acts as
both a wave and as a particle too, so although the photon can't escape the
black hole as a particle perhaps it can escape as a wave though?
If this was the case, then why does this wave not revert back to a photon
when it hits the human eye?...or does it but at a much reduced energy level
so becomes part of the invisible light spectrum.

I don't know.

Steve

---

Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website