Solar sssystem movement?
Question:
Answer:
The solar system moves around the center of the Milky Way galaxy. The galaxy moves around the center of gravity of the local group of galaxies. Our galaxy is plunging toward the biggest galaxy in the local group, the Andromeda galaxy. Our local group is moving around the Great Attractor and it, in turn moves in the universe we can see from here in the greatest telescopes on and around Earth.
Here ya go...
Just remember that you're standing on a planet that's evolving
And revolving at nine hundred miles an hour,
That's orbiting at nineteen miles a second, so it's reckoned,
A sun that is the source of all our power.
The sun and you and me and all the stars that we can see
Are moving at a million miles a day
In an outer spiral arm, at forty thousand miles an hour,
Of the galaxy we call the 'Milky Way'.
Our galaxy itself contains a hundred billion stars.
It's a hundred thousand light years side to side.
It bulges in the middle, sixteen thousand light years thick,
But out by us, it's just three thousand light years wide.
We're thirty thousand light years from galactic central point.
We go 'round every two hundred million years,
And our galaxy is only one of millions of billions
In this amazing and expanding universe.
The universe itself keeps on expanding and expanding
In all of the directions it can whizz
As fast as it can go, at the speed of light, you know,
Twelve million miles a minute, and that's the fastest speed there is.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger all down here on Earth.
hmm...
The planets in our solar system are moving around and around due to the gravitational force exerted by the sun (since it's much bigger than the earth and all the other planets).
So if our solar system is also cruising around and around it must be held in its gravitational orbit by something much bigger than it. The most likely "object" if you can call it that, that's strong enough to hold a bunch of humongous stars in orbit would be a black hole, which is essentially a spot where a bunch of old stars have collapsed and created one huge gravitational center.
Imagine taking all the energy in a major city like New York or London and squishing it to the size of a pin. Then take hundreds of other cities and do the same. That's a lot of energy in a tiny space, and that's what a black hole is, except with stars, not cities.
Hope that made sense!
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