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Ever watch a whirlpool? How about water going down a drain or even a 4th Of July Lacrosse Shirt Born To Play Lacrosse T shirt of cream swirled into your coffee? It sometimes looks like a spiral galaxy. And we once thought gravity was holding a galaxy together. If you watch a whirlpool carefully you will notice the outside orbits the center slowly and the closer to the middle you are the faster it spins. But this was a bit of a problem for galaxies because this would make the arms of the galaxy wind up tight. They would not last for millions of years. Earlier in the century, before computers, astronomer would hire dozens of women who were good at math to do calculations for them. One of them made an important discovery: the speed of the stars in the outer arms was way faster than it should be. The galaxy was spinning like a solid LP record album! According to the laws of gravity, which we know quite well, it shouldn’t behave like this…unless there was WAY more mass than we could see. And the issue of *dark matter* was born. Yes, there would be a lot of dust and gas and planets and small stars we couldn’t see. But all that is still not enough for the behavior we observe. It is a mystery we are still working on!

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Rugby is a lot more fluid. There is a squad of around 50 in a fully pro club, but only 23 in a match day squad. About 30 players at a club are regular performers in the “first team” squad, whilst the other 20 are developing players or reserves who step in as injury cover. The second tier of English Rugby Union is a mixture of professional and semi-professional players, the 3rd tier is mainly semi-pro. Younger players from the first tier sides are routinely sent out on loan to second and third tier clubs to gain experience. This can work the other way as well — recently an injury crisis in a specialised position (tighthead prop) at my local top flight side led to a semi-pro player who works as a Original Lewis Hamilton 44 2023 shirt from a 3rd tier club being borrowed on loan. One minute he’s teaching kids, the next he’s running out infront of 15,000 supporters alongside international players being paid over $500,000 a year.

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