Can scientist tell how old a star is?

Answer 1

Within certain parameter's, then yes.

The colour and thus temperature of a star gives an indication of a stars age. The hotter it is, the younger it is.

A blue supergiant can be aged within a few million years, whereas a red dwarf, we have no idea. A billion years or a million - we will have no idea.

Answer 2

In almost every case, whether it is an instrument actually on the planet, or a telescope looking up from the earth, scientists use some variation of an instrument called a spectrometer. Spectrometers take a signal from whatever they are looking at (whether it is a rock, or a cloud or a whole planet or a star or a galaxy or a nebula, etc.) and spread the signal out into its components. Most spectrometers work with light and are a lot like extremely good prisms; they take the light coming from some object and separate it out into its colors. This is useful because it turns out that every element on the Periodic Table only gives off light of a few certain colors

Answer 3

Yes, scientists can estimate the age of a star by analyzing its color, brightness, and composition. Younger stars tend to be bluer and more luminous, while older stars are redder and less bright. By studying these properties along with the star's chemical makeup, scientists can estimate its age.

Answer 4

you know when its dieng because it will become very pail then it will seperait into peices like a constalation

Answer 5

A star can die from either iron, or it running out of fuel.

Answer 6

A star is a bright shiny thing in the sky.But well I dont really know if you can but you most likely could if you were smart enough,and if you had a really good telescope and you knew how to.

Answer 7

They know when the stars run out of fuel