* We can't see all of them: Our galaxy is huge, and we can only directly observe a portion of it.
* Stars are born and die: The Milky Way is constantly forming new stars and losing others.
* Different methods, different estimates: Astronomers use various methods to estimate the number of stars, leading to different results.
Estimates:
* Current best estimate: Most astronomers believe there are likely hundreds of billions of stars in the Milky Way.
* Previous estimates: Some estimates have ranged from 100 billion to 400 billion.
Important to remember: These are just estimates. The actual number of stars in the Milky Way could be higher or lower.