"in fact, Andromeda is coming towards us at 250,000 mph. Thus, the two galaxies are going to collide in less than 4 billion years."
I gotta be honest, I dread that.
I have some good news and some bad news. First, the good news:
The collision probably won't be too bad. Stars, you may have noticed, are pretty far apart. So when our galaxies "collide," they probably will pass through one another fairly unscathed (with some not-so-lucky direct hits). After they pass through, they will attract each other back again, and oscillate that way for a while until they settle down and become one big galaxy.
Now, the bad news, however. Our sun won't last that long afterwards. It will become a red giant in about 5 billion years. It will expand in size immensely, so that its atmosphere will extend out beyond where Mars is now. There are some, uhhhh, negative implications for the Earth in this scenario.
An image from this weekend. Now try and guess what these two are up to! My older brother on the left, younger on the right. Note the heat proof mitt on my older brothers' left hand. Alcohol was involved.
I reluctantly give up! Upon first glance, it just looks like they are trying to repair an antediluvian dishwasher. However, upon second glance, I notice that they have not even removed the kickplate/access panel, so the Lord only knows what they are up to!