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Q: Are all red giants Cepheid Variables?
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Related questions

What do all stars eventually turn into?

All stars eventually turn into Red Giants or Super Giants


What are Featureless galaxies containing old red main-sequence stars and red giants called?

If they have red stars including giants in, they can't be all that featureless.


Are red giant stars the largest?

Yes red giants are the largest. But the bigger stars of red giants can be called red hyper giants.


Which are hotter white dwarfs or red giants?

red giants


A star that explodes temporarily increasing its brightest?

binary star


Are there different types of red giants?

Yes, there are. The classic red giants that come from sun- like stars, and red supergiants come from blue giants.


Are red giants or blue giants bigger?

Generally red giants are bigger, but really it has more to do with how hot they burn. Blue giants burn hotter and have more mass.


How big are Red Giants?

Red Giants are 20 to 100 times bigger than the Sun.


Who stated the universe is expanding?

The Doppler effect is well known, and Fizeau observed the red-shift of the light from distant stars. So the effect was called Doppler-Fizeau. There are a class of astronomic objects called the Cepheid Variables in which it is observed that the rate of variation in the brightness of the star related to its absolute brightness, and therefore its mass. Thus these stars can be used as a measure of distance, as the period of their variability does not change with distance, but their apparent brightness and their red-shift does. Hubble made a number of observations of Cepheids in the Andromeda galaxy. The article on Cepheid Variables in wikipedia.org is well worth reading, as it illustrates scientific discovery and enquiry. He went on to reason that the Cepheids could be used as a standard measure of astronomical distance. And this formed the basis of the Expanding Universe. These observations are one of the foundations of cosmology.


Which of these stars produces the most light?

Well light wise the highest category would be blue giants, red giants, and super red giants.


What do we call a large family of millions of stars?

Red giants. By the way, what if it was a white star.


Where are white dwarfs supeegiants and red giants?

White Dwarfs, Supergiants, and Red Giants are stars that are found in the sky.