Hellios

Explore the Sun’s future

How much time is left before our star swells into a red giant? Solar Countdown turns billions of years of stellar evolution into a story you can explore in minutes. Travel from the Sun’s “right now” to its distant future. Each stop on the timeline pairs gorgeous space visuals with clear, bite-sized explanations - what happens to the Sun, and what it could mean for Earth.

Available for Android phones, iPhone, and iPad.