What is the main idea and list a least 2 details about the main idea?

Edwin Hubble came up with a way to classify galaxies by shape.He labeled elliptical galaxies E.He classified by th size of the galaxy's nucleus and the tightness of it's arms.

Isn't this paragraph all about shapes?

I'll be glad to check your answers.

It is suppose to be this

What is the main idea and list a least 2 details about the main idea?
Edwin Hubble came up with a way to classify galaxies by shape.He labeled elliptical galaxies E.He classified them further by shape,using the numbers 0-7.Spiral galaxies can be either normal,labeled S,or barred spiral,labeled SB.They are then classified by the size of the galaxy's nucleus and the tightness of it's arms.

What do you think is the main idea?

Spiral galaxies can be either normal,labeled S,or barred spiral,labeled SB.

That is not the main idea.

Hint: The main idea is usually in the first sentence.

Edwin Hubble came up with a way to classify galaxies by shape.

Right! That's the main idea.

What are the two shapes of the galaxies?

i don't know can i have a hint

The main idea of the passage is that Edwin Hubble developed a method to categorize galaxies based on their shape.

To find at least two details that support this main idea, we can look for specific information about Edwin Hubble's contributions to classifying galaxies.

Detail 1: Edwin Hubble labeled elliptical galaxies as "E." This detail emphasizes Hubble's classification system involving different labels for different types of galaxies.

Detail 2: Hubble classified galaxies based on the size of their nucleus and the tightness of their arms. This information highlights the specific criteria that Hubble used to differentiate between different galaxy shapes.

By combining these details with the main idea, we can fully capture the essence of the passage.