In about 5 billion years, our Sun will run out of hydrogen fuel and expand into a red giant. This massive change will destroy the inner planets, including Earth, as the Sun swells beyond their orbits.

First, let’s discriminate between expansion and expulsion. Expansion happens because the thermal pressure from the increased energy production in the Sun’s interior exceeds the gravitational force ...

Our Sun will become a white dwarf in about 7 billion years. At that point, it will no longer produce energy through nuclear fusion, having exhausted its fuel (hydrogen and helium). Just like the ...

A distant star system offers hope that our planet will keep spinning, even after the Sun expands into a red giant. Reading time 3 minutes In billions of years, when our Sun runs out of fuel, it will ...

One day our Sun will die, and consume our world in fire, but is it possible to refuel our Sun so that it might live trillions and trillions of year to come? US Navy sailor convicted of spying for ...

The sun rises and sets every day. We plan our lives around it. It's ironic, then, that "we know so little about the star at the center of our solar system," says Matina Gkioulidou, a space physicist ...

Observations made using a new method have revealed that sun-like stars produce cataclysmic superflares once every hundred years. Could our sun create one soon? When you purchase through links on our ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This article was originally published at The Conversation. The publication contributed the ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...