“They do not see what lies ahead, when Sun has faded and Moon is dead.” -J.R.R. Tolkien
Someday, the Sun will expand, engulfing Mercury and Venus, and then some. Will we survive?
It’s an exciting week, as our long-running Ask Ethan series debuts over at Medium! You can still send in your questions and suggestions here, and tomorrow I’ll respond here with the very first installment of comments of the week. But first, here’s something you surely wonder about.
Our Sun — giver of life — will some day take it all away. In a short one-to-two billion years, it will get so hot that the Earth’s oceans will boil. And yet, that’s just peanuts compared to what the far future holds, when it expands into a red giant star! Its radius and brightness will increase tremendously, and Mercury and Venus will surely be engulfed.
But what about the Earth?
Go take the journey over to Medium and find out!