Do you think that our solar system is really expanding?

Question

our solar system - research

Answer 1

It is along with the rest of the universe.The difference is that objects close expand slower.
If you believe that a train horn coming towards you makes a higher pitched whistle than after it passes, then you believe in expansion to.The same physics principle(Doppler Shift) that explains the train horn pitch variation, is the same principle that explains how we recognize universal expansion. Its all about compressed waves, and expanded waves, and the lines they produce on spectrogram's, which is what Edwin Hubble used when he first discovered the expanding universe.

Answer 2

If you are talking about the 'universal expansion' of the Big Bang, then you are off by many orders of magnitude. The solar system (which is the sun, its planets, asteroids, comets, and plutons) is incredibly small compared to our galaxy (which consists of over a hundred billion stars, many larger than the sun). The expansion due to the Big Bang is only evident when you get out past several of the closest other galaxies. Until then, the effect is drowned out by all sorts of other motions.

Now, our solar system isn't really expanding. The planets move around the sun in about the same orbits that they have for billions of years. I guess it's possible you are thinking about the recent reclassification of some objects as planets (which means there are 12 planets now rather than 9), but that isn't an expansion of the solar system, it's just our naming of the objects in the solar system.

Answer 3

Yes, there is a tremendous amount of evidence to back it up.

The first one was, of course, the fact that Hubble and Humason (sp?) discovered that nearly every galaxy seen is traveling away from us. The simplest way to explain that is with the "raisin bread" explanation of inflation.

But the most compelling is that the echo from the background radiation from the time of recombonation (~300k years after the big bang) is downshifted by EXACTLY the amount that would be explained by an expanding universe.

JM

Answer 4

Yes.
Along with everything else in the universe, we are moving away from every significant object in the universe.

Just imagine the stars and planets as the raisins on a unbaked loaf of bread. When you put the bread into the oven, it'll expand and you'll realise that the raisins will start to 'grow apart' from each other, just like how the universe is modelled.

Answer 5

Our solar system no, but the universe yeah it is expanding or it was expanding, you cannot accually know, it might be recollapsing and we dont know it, because as you know when we look at space we see the past, we still lie in the past cone of the event we are still not affected by the future cone of the event, imagine for example that the sun burnt out, you wouldn't know that because it takes light from the sun 8 minutes to reach us, so after 8 minutes we woould know that it burnt out. so for more distant objects it takes more and more time.

Answer 6

It's reasonable to assume that the combined gravitational strength of our solar system would attract more objects into increasingly larger orbits.

Answer 7

There's no definite answer to this question,only spectulations are.And as it is believed that the stars born and some die,we can say it is expanding,but no one can say how much.As you know it was believed that the universe age is about 13.8 bilion years and now it is speculated to be 15.8 bilions...

Answer 8

Yes.

Answer 9

yes

Answer 10

Yes, this is how the scientific measurements suggest