It is possible to discover new galaxies.
It's impossible to be precise, but I would guess all of them. The galaxy is so large.
Observing another spiral galaxy, gives us a good idea about the structure of our own Galaxy.
No -you die from old age. The nearest galaxy is the Andromeda Galaxy and it's 2.2 million light years away - meaning if that man in a probe was traveling at the speed of light (currently impossible) it would take him 2.2 million years to get there. As you know, humans only live about 80 years.
Traveling to another galaxy at the speed of light would take an incredibly long time. The closest galaxy to us, the Andromeda galaxy, is about 2.5 million light-years away. This means it would take 2.5 million years to reach Andromeda at the speed of light.
You could send them in the right direction but they would never make it. Even if they traveled at the speed of light, it would take 2.2 million years to get to the nearest galaxy - The Andromeda Galaxy
For 'discovered' the word would be learned; for 'discover' the word would be learn.
Well Discover would be the type of credit card your friend has, and a balance transfer would be him paying off that credit card with another. He can contact Discover, or look on their website for more information.
About 100,000 years. (the diameter of the Milky Way galaxy is 100,000 light years)
It would be impossible to predict such an event.
To go to it. ;)
Each star is a sun for another galaxy, so i would say it was absolutley massive!
All stars we currently know of are part of a galaxy. Stars are born within galaxies from clouds of gas and dust. If a star were to exist without belonging to a galaxy, it would likely be a result of very rare and extreme circumstances, such as being ejected from its parent galaxy due to a collision or interaction with another galaxy.