How Do We Know How Fast the Milky Way Is

question 2

Essay

How do we know how fast the Milky Way is moving relative to the local universe? What are we moving toward, and what do we think is mostly responsible for this motion?

---

Definitions:

Independent Replications

Separate instances of an experiment or simulation that are conducted independently to ensure variability in results is due to the process rather than randomness.

Probability

The measure of how likely it is for an event to occur, expressed as a number between 0 (impossible) and 1 (certain).

Customers

Individuals or businesses who purchase goods or services from another entity.

Expected Value

The average outcome of a random variable, calculated as the sum of all possible values each multiplied by their respective probability of occurrence.