Once around the Milky Way would take about 225 -> 250 million years.
No, it is because of the Earth rotating on its axis.
No. Because such a combination can never exist.
Yes. The earth spins on its axis and it orbits the sun. The solar system is also orbiting the center of the Milky Way, and the Milky Way itself is moving among the other galaxies in the universe. Really, there is NOTHING that is not moving. Where would it be?
There no milky way in sky there is only milky way galaxy
The Milky Way galaxy is.... called the Milky Way Galaxy
The question is kind of vague.The Earth orbits the Sun, and it also rotates on its own axis. ?Along with that, the solar system as a whole orbits the barycenter of the Milky Way galaxy, and the Milky Way as a whole is moving approximately towards the Andromeda galaxy.
A "day" is basically the time Earth rotates around its axis. Sometimes people talk about a "day" on other planets, which can be anywhere between a few hours and several months. There is no commonly accepted equivalent for the Milky Way.
The galaxy that contains Earth and the rest of the Solar system is the Milky Way galaxy.
We all live in the same Universe.
Good question - The black hole(s) (i.e. Sagittarius A*) at the center of the Milky Way are estimated to be a little more than 4 million solar masses (e.g. stars like our Sun). The Milky Way galaxy is a barred spiral galaxy 100,000-120,000 light-years in diameter and has been estimated to be hosting 200-400 billion stars, and at least as many planets. Therefore the answer is that the accumulated mass of the Milky Way galaxy (of course excluding its centric black hole(s)) is greater than the mass of the black hole(s) at the center of the Milky Way.
the milky way is just the name of our galaxy, there isn't really a "milky way"