Have you ever looked up at the night sky and wondered about the stars you see? They might seem small and distant, but some are so massive that they’d dwarf our own sun. One such star is R Doradus, a red giant star that holds a fascinating record. It’s thought to be the star with the largest apparent size as seen from Earth.
R Doradus is not the biggest star in the universe, but it appears larger than any other stars from our view on Earth, because of its relative closeness. How big is it really? Imagine this:
R Doradus is a red giant star. Red giants are stars that have used up the hydrogen fuel at their core. As a result, they expand and cool down, leading to a reddish appearance. R Doradus is located in the far-southern constellation Dorado, about 178 light-years (or 55 parsecs) away from Earth. While R Doradus is incredibly large, it’s not as hot as some other stars. Its surface temperature is about half that of the Sun. This cooler temperature contributes to its red color.
Despite its size, R Doradus isn’t visible to the naked eye. You’d need a telescope to see it. However, its size and proximity make it an exciting object for astronomers to study.
Be the first to get exclusive offers and the latest news