red giant | Universe Today

red giant

We Know We’re Made of Stardust. But Did it Come From Red Giants?

We've all heard this one: when you drink a glass of water, that water has already been through a bunch…

4 months ago

This Star Has Reached the End of its Life

About 10,000 light years away, in the constellation Centaurus, is a planetary nebula called NGC 5307. A planetary nebula is…

7 months ago

Why Doesn’t Earth Have Rings?

You'd think Saturn has all the luck, with its awesome rings. But it turns out, living on a planet with…

3 years ago

What Are Multiple Star Systems?

Not all stars are alone. Some come in pairs and more. And when there are multiple stars in a system,…

3 years ago

What is a Nova?

We’ve talked about supernovae plenty of times, but what about just regular, plain old novae? What are they, and how…

3 years ago

What if Earth Stopped Orbiting the Sun?

What if the Earth just stopped dead in its tracks while orbiting the Sun? It would plummet straight down of…

4 years ago

What is the Biggest Star in the Universe?

If our Universe could be likened to a playground, our Sun would be one of the little kids playing in…

4 years ago

What is the Life Cycle Of The Sun?

Like all stars, our Sun has a life-cycle that began with its birth (4.57 billion years ago) and will end…

4 years ago

Why Do Red Giants Expand?

We know that the Sun will last another 5 billion years and then expand us a red giant. What will…

4 years ago

How Do You Jumpstart A Dead Star?

It's a staple of science fiction, restarting our dying star with some kind of atomic superbomb. Why is our Sun…

6 years ago