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Megastar-Birth Cluster is Biggest, Brightest and Hottest Ever Seen
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By NASA
1 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Will the Sun ever burn out?
Well, the Sun, just like the stars we see at night, is a star. It’s a giant ball of super hot hydrogen.
Gravity squeezes it in and it creates energy, which is what makes the Sun shine. Eventually, it will use up all of that hydrogen. But in the process, it’s creating helium. So it will then use the helium. And it will continue to use larger and larger elements until it can’t do this anymore.
And when that happens, it will start to expand into a red giant about the size of the inner planets. Then it will shrink back down into a very strange star called a white dwarf — super hot, but not very bright and about the size of the Earth.
But our Sun has a pretty long lifetime. It’s halfway through its 10-billion-year lifetime.
So the Sun will never really burn out, but it will change and be a very, very different dim kind of star when it reaches the end of its normal life.
[END VIDEO TRANSCRIPT]
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Last Updated May 15, 2025 Related Terms
Science Mission Directorate Heliophysics Heliophysics Division The Solar System The Sun The Sun & Solar Physics Explore More
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By European Space Agency
As the new Biomass satellite settles into life in orbit following its launch on 29 April, ESA has released its most extensive satellite-based maps of above-ground forest carbon to date. Spanning nearly two decades, the dataset offers the clearest global picture yet of how forest carbon stocks have changed over time.
Developed through ESA’s Climate Change Initiative, this new long-term record integrates data from multiple satellite missions – and will soon be further enhanced by data from the Biomass mission itself.
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By European Space Agency
Image: The Ocean and Land Colour Instrument on Copernicus Sentinel-3 captured this image of Earth’s biggest iceberg, A23a, on 5 April 2025. View the full article
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