Question

What are the four main categories of stars?

How does each of these types of stars differ in size, brightness, and temperature? *Answer both, please!* :)

Answer 1

Read below:

Step-by-step explanation:

1. The four main categories of stars are:

1. O-type stars: These are the hottest and most massive stars. They are extremely bright and have surface temperatures of more than 30,000 K.
2. B-type stars: These stars are slightly cooler and less massive than O-type stars. They have surface temperatures of around 10,000 K and are also very bright.
3. A-type stars: These stars are cooler and less massive than B-type stars. They have surface temperatures of around 7,500 K and are relatively bright.
4. M-type stars: These stars are the coolest and least massive of the four categories. They have surface temperatures of less than 3,500 K and are not very bright.

2. In general, O-type stars are the largest and most luminous, while M-type stars are the smallest and least luminous. B-type and A-type stars fall in between these two extremes in terms of size, brightness, and temperature. However, there is a lot of variation within each of these categories, and there is not a hard and fast rule for how these characteristics relate to one another. The size, brightness, and temperature of a star depend on a variety of factors, including its mass, age, and composition.