New Scientist
The Milky Way has thousands of black holes
UP TO 25 000 black holes are hiding in the heart of our Galaxy,
claim two astronomers in the US. "The black holes are buzzing like flies
around the centre," says Jordi Miralda Escudż of Ohio State University.
Although only half a dozen black hole candidates are known to exist
in the Milky Way, some astronomers think the Galaxy is swarming with
black holes created by exploding stars. Miralda and his Ohio State
colleague Andrew Gould say that these holes will cluster in the centre
of the Galaxy because they tend to transfer some of their orbital energy to
smaller objects every time they have a stellar encounter. "The black
holes therefore lose energy and fall to the centre," says Miralda.
The migration is very slow, however. Miralda and Gould calculate
that in the 10-billion-year lifetime of our Galaxy, only those holes
born within 15 light years of the centre would have had enough time to make it
to the middle. To gauge how many have made it, the astronomers estimated how
many black hole-spawning supernovae have gone off within this
15-light-year radius over the past 10 billion years. "We assumed about a
fifth of the stars bigger than eight times the Sun's mass left black holes at
the end of their lives," says Miralda. "That gave us the figure of 25 000."
According to the astronomers, the black hole cluster will be
depleted as holes are occasionally gobbled up by the giant black hole
thought to dominate the middle of the Milky Way. But it will be replenished as
others slowly migrate in. Other galaxies should also have similar black hole
clusters in their hearts, they believe.
Experts in the field agree that such gatherings are plausible. "I
certainly think the black hole cluster story is interesting," says
Martin Rees of Cambridge University.
Detecting the black holes may be difficult, however. One
possibility is picking up a burst of gravitational waves-the death cry
of a black hole as it swoops close to the central giant hole before being
swallowed. However, this will require a space-based gravitational wave detector
such as the European Space Agency's LISA, which isn't due to be launched for
another 10 years.
But there could be other ways to observe the cluster. The stellar
encounters that sap the holes' energy can also boost the orbital energy
of stars, throwing them out into the farther reaches of the Galaxy. Therefore
Miralda and Gould predict that astronomers should find very few old,
low-mass stars in the central region, as most would have been ejected over
time. What's more, they predict that any remaining stars should have
been kicked into highly elliptical orbits by black hole encounters.
"There is a good chance of seeing both these effects," says
Miralda. He and Gould have submitted a paper to The Astrophysical Journal.
"Shammie" <sham...@aol.compizzagrl> wrote in message
news:20000411205841...@ng-fn1.aol.com...
> They should build a Voyager episode around this!!
> . . .
This brings something else to mind...
Remember the good old days when Cadbury Easter Eggs WERE creamy inside? What
has happened to that? Now all the eggs seem to be... almost... well, dry? (I
can't quite put my finger on it...)
Quality has really gone downhill, IMHO.
Have any of you EVER eaten Peeps? ..and actually LIKED them? When I was little,
every Easter my grandmother would ALWAYS get them for the basket I would get
from her, but I hated them so I never ate them (except that one time I ate the
head off one of them but then the sweet marshmallowyness made me queasy), and
every year they'd end up being the last thing in my basket and they'd sit there
forever until they were rock hard :P
.-~* Jup (...and don't perv any of that, you weirdos)
Oh my... you actually BIT the head off?!
>
>.-~* Jup (...and don't perv any of that, you weirdos)
Ya, Weirdos!
(Oh, and uh.... What's a 'Peep'?)
Nothing ruins a day more than a "bad" Creme Egg. I am a definite
connoisseur of these and have been known to eat a box of six in one go.
Cadbury World isn't far from where I live and I have toured around it and
seen the chocolate made and packed etc... We were in seventh heaven with
all the free samples and there is a big shop where they sell every sort of
Cadbury Chocolate going.
I think you'll find though that shops sell old stock with the new which is
why you get a dry egg. You would never get a fresh egg that was dry, unless
it had been cracked and started to dry out.
Lisa
I hates them Peeps things! I must be losing my gutterness, I didn't
even think to perv that last statement until you said not too. Methinks
I need to head back to the alternate universe for a spell...
* Robinson
--
"No one questions the assassination of a Captain who disobeys prime
orders of the Empire."
-- Ensign Pavel Chekov, "Mirror, Mirror"
>Empress of The Unknown wrote..
[snip]
>>Have any of you EVER eaten Peeps? ..and actually LIKED them? When I was
>little,
>>every Easter my grandmother would ALWAYS get them for the basket I would
>get
>>from her, but I hated them so I never ate them (except that one time I ate
>the
>>head off one of them but then the sweet marshmallowyness made me queasy),
>and
>>every year they'd end up being the last thing in my basket and they'd sit
>there
>>forever until they were rock hard :P
>
>Oh my... you actually BIT the head off?!
Yes, I get like that sometimes.
>>.-~* Jup (...and don't perv any of that, you weirdos)
>
>Ya, Weirdos!
>
>(Oh, and uh.... What's a 'Peep'?)
Marshmallows shaped like a chick with a grainy sugar coating (either pink or
yellow). They're ICKY!
.-~* Jup ::assumes praying stance as her eyes search the ATSTV Saloon for a
mate::
>Empress of The Unknown wrote:
[snip]
>> .-~* Jup (...and don't perv any of that, you weirdos)
>
>I hates them Peeps things! I must be losing my gutterness, I didn't
>even think to perv that last statement until you said not too. Methinks
>I need to head back to the alternate universe for a spell...
I'll kick the perviness back into ya, for a price.. ::stares into Mr.
Robinson's eyes, hypnotizing him, then holds my forearms closer together in
prayer, swaying gently in front of him....::
What good ones? I ain't seen any.
* Robinson (angst rising again)
This isn't gonna end in my untimely demise, is it?
* Robinson
>Empress Mantis wrote:
>> Mirror Spock wrote:
>> >Empress of The Unknown wrote:
>> [snip]
>> >> .-~* Jup (...and don't perv any of that, you weirdos)
>> >
>> >I hates them Peeps things! I must be losing my gutterness, I didn't
>> >even think to perv that last statement until you said not too. Methinks
>> >I need to head back to the alternate universe for a spell...
>>
>> I'll kick the perviness back into ya, for a price.. ::stares into Mr.
>> Robinson's eyes, hypnotizing him, then holds my forearms closer together in
>> prayer, swaying gently in front of him....::
>
>This isn't gonna end in my untimely demise, is it?
::points at my handle:: You figure it out! :P
> jupit...@aol.comeToMe (Empress Mantis) wrote:
>>>(Oh, and uh.... What's a 'Peep'?)
>>
>>Marshmallows shaped like a chick with a grainy sugar coating (either pink or
>>yellow). They're ICKY!
>
>Yuck.. that much sugar would send me into a coma. Those things are and
>always were disgusting!
Do you almost always take the frosting off your cake, too?
>>.-~* Jup ::assumes praying stance as her eyes search the ATSTV Saloon for
>a
>>mate::
>
>Don't do that! You'll miss the good ones walking by in real life!
Well.. Finding someone in a newsgroup isn't impossible, because it's been done.
Anyway, I was just foolin' around with the mantis thing, I'm not looking for a
"mate" right now <g>
I'm living proof :)
--
Hugh: "Resistance is... NOT futile."
EvilBill's home page: http://members.xoom.com/EvilBill/
E-mail: evilb...@freeuk.com. ICQ number: 37464244
Get paid to surf the web: http://www.alladvantage.com/join.asp?refid=dtd-950
>"Empress of The Unknown"..wrote..
>> Well.. Finding someone in a newsgroup isn't impossible, because it's been
>done.
>
>I'm living proof :)
Me, too.
Methinks I like encounters that don't end in me finding out if God
really does exist. Howsabout some Voyager eps and spiked chocolate?
Online love has its pitfalls, but it can also be very rewarding...
>"Empress of The Unknown"..wrote..
[snip]
>Online love has its pitfalls, but it can also be very rewarding...
Depending on what you do with it.
>Empress Mantis wrote:
>> Mirror Spock wrote:
>> >This isn't gonna end in my untimely demise, is it?
>>
>> ::points at my handle:: You figure it out! :P
>
>Methinks I like encounters that don't end in me finding out if God
>really does exist. Howsabout some Voyager eps and spiked chocolate?
Sold! ::runs across the NG and leaps onto the couch::
Agreed :)
::Wipes his brow:: Phew!
::Plops on couch next to the Empress:: What ep shall we watch?
>Empress of The Unknown wrote:
>> Mirror Spock wrote:
[snip mantis-act]
>> >Methinks I like encounters that don't end in me finding out if God
>> >really does exist. Howsabout some Voyager eps and spiked chocolate?
>>
>> Sold! ::runs across the NG and leaps onto the couch::
>
>::Wipes his brow:: Phew!
>::Plops on couch next to the Empress:: What ep shall we watch?
Hmm.. I missed practically the whole first season and some of the second of
Voyager, so I know I haven't seen all of Kes' episodes yet.. Let's start off
with a Kes-a-Thon!
Sounds good to me! ::Pops in season 1 tape and presses play::
Here we go!
>Mirror Spock wrote:
>
>>Empress of The Unknown wrote:
>>> Mirror Spock wrote:
>
>[snip mantis-act]
>>> >Methinks I like encounters that don't end in me finding out if God
>>> >really does exist. Howsabout some Voyager eps and spiked chocolate?
>>>
>>> Sold! ::runs across the NG and leaps onto the couch::
>>
>>::Wipes his brow:: Phew!
>>::Plops on couch next to the Empress:: What ep shall we watch?
>
>Hmm.. I missed practically the whole first season and some of the second of
>Voyager, so I know I haven't seen all of Kes' episodes yet.. Let's start off
>with a Kes-a-Thon!
good idea! Let's watch the old eps, when the series had not turned
into a travesty yet! :-)
Julianna
--------
Tuvok:
The main reason to watch Voyager!
>..Empress of The Unknown..wrote:
[snip]
>>Hmm.. I missed practically the whole first season and some of the second of
>>Voyager, so I know I haven't seen all of Kes' episodes yet.. Let's start off
>>with a Kes-a-Thon!
>
>good idea! Let's watch the old eps, when the series had not turned
>into a travesty yet! :-)
I actually like Tuvok's personality better now than I did back in the first
couple seasons. And the newer eps are nice, but I would rather have Kes back
:(
>Julianna wrote:
>
>>..Empress of The Unknown..wrote:
>
>[snip]
>>>Hmm.. I missed practically the whole first season and some of the second of
>>>Voyager, so I know I haven't seen all of Kes' episodes yet.. Let's start off
>>>with a Kes-a-Thon!
>>
>>good idea! Let's watch the old eps, when the series had not turned
>>into a travesty yet! :-)
>
>I actually like Tuvok's personality better now
the weakling that can't stand up to Tommy??????? the guy Janeway had
no use for and dumped????
> than I did back in the first
>couple seasons.
he was a strong, intelligent, well respected character back then. Now
he's a ridiculous nobody, dissed by everybody and respected by no one.
:-((((((((((((((((((((((((((((((((
> And the newer eps are nice, but I would rather have Kes back
>:(
that's actually the one and only ep I'm *still* looking forward to...
>..Empress of The Unknown..wrote:
>>Julianna wrote:
>>>..Empress of The Unknown..wrote:
>>I actually like Tuvok's personality better now
>
>the weakling that can't stand up to Tommy??????? the guy Janeway had
>no use for and dumped????
Janeway "having no use for Tuvok and dumping him" has nothing to do with
*Tuvok*'s personality. He -should- stand up to Tom if he has a problem. But,
besides that, I do like the way he is now, because he is more easy-going and
not so..cold and "thin" (personality-wise) as he first seemed to me.
>> than I did back in the first
>>couple seasons.
>
>he was a strong, intelligent, well respected character back then. Now
>he's a ridiculous nobody, dissed by everybody and respected by no one.
>:-((((((((((((((((((((((((((((((((
Well, then Tuvok should speak up if he feels he's being mistreated.
>> And the newer eps are nice, but I would rather have Kes back
>>:(
>
>that's actually the one and only ep I'm *still* looking forward to...
Me, too. I've missed the character Kes and Jennifer's acting :}
I'm so not looking forward to that episode.
>Julianna wrote:
>
>>..Empress of The Unknown..wrote:
>>>Julianna wrote:
>>>>..Empress of The Unknown..wrote:
>
>>>I actually like Tuvok's personality better now
>>
>>the weakling that can't stand up to Tommy??????? the guy Janeway had
>>no use for and dumped????
>
>Janeway "having no use for Tuvok and dumping him" has nothing to do with
>*Tuvok*'s personality. He -should- stand up to Tom if he has a problem. But,
>besides that, I do like the way he is now, because he is more easy-going and
>not so..cold and "thin" (personality-wise) as he first seemed to me.
>
he never was cold (rewatch "Prime factors" and "Twisted" for instance,
or the ready-room-scene between him and Janeway in "Caretaker"). He
just was respected and treated like an equal, not like a stupid
nuisance that nobody can be expected to put up with for any lenth of
time.
>>> than I did back in the first
>>>couple seasons.
>>
>>he was a strong, intelligent, well respected character back then. Now
>>he's a ridiculous nobody, dissed by everybody and respected by no one.
>>:-((((((((((((((((((((((((((((((((
>
>Well, then Tuvok should speak up if he feels he's being mistreated.
in order to do that he'd need screentime.
>>> And the newer eps are nice, but I would rather have Kes back
>>>:(
>>
>>that's actually the one and only ep I'm *still* looking forward to...
>
>Me, too. I've missed the character Kes and Jennifer's acting :}
so did I. But as much as I missed her I'm also very happy for her that
she did get away before she was reduced to an invisible nobody as
happened to Tuvok/Tim. I wouldn't have been able to watch seeing them
*both* denied their promotion/exposure/chance at catching casting
people's eyes.