RE: Weird Science! : Here There Be Dragons!
Some folks have been talking about something called the multiverse, in which there are an infinite number of universes that all occupy the same space but are somehow dimensionally separate. Some about M-Branes...and SuperString and other things that sound like the results of your 2 year old left unsupervised.
Suppose that it's right? They also say that the only connection between all those universes is gravity.
So...so called 'space time' isn't flat. it's got dimples from where other planets and stars distort it as a result of gravity.
So what happens if a sun in one space lines up with a sun in an other space...would their gravity add to each other?
Suppose it happened to planets?
Dinosaurs...just think about dinosaurs. They were so big that if they existed today their legs would break when they stood up. They couldn't exist in todays gravity. Where'd the extra gravity come from?
We now return you to our normally scheduled rant.
Suppose a LOT of suns line up in one spot? From a distance what would it appear to be?
Suppose a LOT of suns, all of which were in other dimensions, line up , but there is no sun or anything, in this universe?
Just a pothole..
hmmmmm?
Actually the latest science is that the bone structure of the largest dinosaurs was honeycomb and filled with mostly air. Nothing changed in gravity during this time, but the material we used to think they were made of, wasn't what they were actually made of. They were more like birds than lizards. Which makes sense, because I had T-Rex's grandchild for supper this evening (chicken).
OMG!!! A giant CHICKEN!
(ahem)
speaking of birds...they used to be Yuuuuuuuge.
.
today the biggest bird in a condor.
the Gooney Bird is called that for a reason. It can barely get off the ground.
what happened?
What happened?
Reduction of oxygen & CO2.
Our climate is much cooler and drier than it used to be, this means the air is thinner than it was back then.
Back then if you took a metal baseball bat and hit a tree with it hard enough it would burst into flames.
awww.
You're pulling my leg.
The News said just the other day that it's the warmest now that it's ever been.
...and that the CO2 content was the highest EVAH!
Yeah they're wrong about that. We've only been keeping records for a little over 100 years. Anything beyond that is guess work. However large animals need large amounts of oxygen and large plants need large amounts of C02.
The types of plants in places like the arctic were tropical.
So the earth has been much warmer. Just not warmer since we started keeping records. Then again we are exiting a very narrow temperature range that has held for most of human civilization. So who knows how humans who evolved during a cold time will react to it getting both much warmer and much colder.
Earth isn't heating up, it's expanding it's highs higher and it's lows lower. The range is the change.
but..but..but...Obama SAID!!!
and 97% of Scientists agree.
it's settled science.
oh...wait.
uh....ohhhhhhh.
Pretty much yeah. There was very little difference between T-Rex and a chicken in terms of overall anatomy. Chickens are even sometimes born with teeth, it's as rare as hen's teeth, but it's been known to happen!
No actually, hollow bones are stronger than solid bones if the hollows have the correct geometric shapes. Such as a honeycomb pattern.
Plus the air chambers provide for compressability that we otherwise couldn't explain.
You see the muscles attach with ligaments to the bone, but many of those attachments were always to small for the amount of muscle that would have been required had the bones been solid.
New imaging tells us it was mostly hollow bone full of air, so far less muscles were needed.
I still wouldn't recommend going back in time and punching a T-Rex though.
His head was still perfectly capable of crushing cars. The lighter bones just meant he was much more agile and moved much faster than in the movies.
To answer your question about Gravity it appears to be constant at all places through the universe. Remember when we look into space we are looking back in time. The gravitational constant holds true in all cases.
There isn't a very good proxy for gravity, it seems to be unique amongst the forces, although klein had it unified with electromagnetism at one time...
https://en.wikipedia.org/wiki/Kaluza%E2%80%93Klein_theory
You mean the moon, mars, jupiter, the earth, the sun and beta caradyne all have the same gravity?
The heavier (more massive) an object is, the more gravity it has (it bends spacetime more). Thus, since the moon is less massive, it pulls on you less, so you'd weigh 1/6 your current weight. You'd be utterly crushed on Jupiter, which is much more massive.
As a function of their mass they do.
Keep in mind that gravity isn't some mysterious force.
It's just a geometric property. It's the degree of curvature in an otherwise flat spacetime and the degree of curvature is a function of mass / energy density.
and what curves the space time?
Mass
And does all the mass have to be in THIS universe?
What about mass in a parallel universe?
Does it have any effect?
Suppose THAT is what dark matter is
Suppose THAT is the missing mass?
Wouldn't that suck?
er...I mean..