In a billion years, the sun will start to run out of fuel and expand to become a red giant. Earth's oceans and atmosphere will be burned away, and Earth will likely be engulfed by the sun altogether.

NASA-funded studies suggest Earth’s climate has been influenced by both the Sun’s travels through dense regions of the Milky Way and the violent superflares of its youth. Those events may help explain ...

The future is bright—too bright—for life as we know it once the sun transforms into a red giant star It’s impossible to forget just how much the sun affects life on our planet. It’s overwhelmingly the ...

A new study suggests that when our solar system’s star becomes unstable in 5 billion years or so, Earth may avoid being engulfed by its fiery demise. Scientists have long estimated that in about 5 ...

The object, the latest “quasi-moon” detected by astronomers, could be with us for almost another 60 years. By Robin George Andrews The Earth stands alone in the solar system as a habitable world, as ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This voice experience is generated by AI. Learn more. This ...

The year 2026 begins with a cool alignment in our solar system. Our little family of Earth, sun and moon will be at their closest to each other in the first days of the year. It’s not too often that a ...