Spinning Stars Could Help Scientists Find A New Earth
Scientists can now determine the age of sun-sized stars — here's how they're doing it, and why it's important.By Sebastian Martinez | January 6, 2015
Determining the age of stars — the kind in the sky, although also sometimes the kind on the big screen — has been a tall order. It's a puzzle scientists have been trying to solve for decades, and now they seem to have made a breakthrough. (Video via NASA)
Really quick though — being able to tell how old a star is can be crucial in better understanding concepts from how the universe developed to finding earth-like planets out there in the near-limitless expanse of space. So, if you care about any of that stuff, it's pretty important.
Anyway, so-called 'cool stars,' — stars about the size of our sun — basically look the same, externally, from shortly after they're born, until right when they're about to die, which is why it has been so hard for astronomers to find their age. (Video via NASA)