1. What is the exact shape of the Milky Way? Recent studies have suggested that the Milky Way may be a barred spiral galaxy, rather than a pure spiral galaxy as previously thought. This would mean that it has a central bar-shaped structure, surrounded by spiral arms.

2. What is the true nature of dark matter? Dark matter is a mysterious substance that makes up around 27% of the universe, but its exact nature is unknown. Scientists are currently investigating whether dark matter is made up of particles, such as weakly interacting massive particles (WIMPs), or if it is a new form of gravity.

3. How did the Milky Way form? The formation and evolution of the Milky Way is still not fully understood. Scientists are currently studying the galaxy's stellar populations, chemical abundances, and dynamics to try to piece together its history.

4. What is the future of the Milky Way? The Milky Way is on a collision course with the Andromeda galaxy, our nearest major neighbor. This collision is expected to happen in about 4 billion years, and it will result in the merger of the two galaxies. Scientists are currently studying how this merger will affect the Milky Way and its inhabitants.

5. Is there life elsewhere in the galaxy? The Milky Way is home to billions of stars, and many of these stars are likely to have planets orbiting them. Some of these planets may be habitable, and they could potentially support life. Scientists are currently searching for signs of life beyond Earth, both in the Milky Way and in other galaxies.

These are just a few of the many questions that scientists are currently researching about the galaxy. As our technology improves, we are able to learn more and more about the Milky Way and its place in the universe.