Our sun, like all stars, is made mostly of hydrogen and helium. They are by far the most abundant elements, formed in the early moments of the universe. But our star is also rich in other elements ...

What happens when a star dies depends on its mass. If a very massive star runs out of fuel, it explodes in a huge event called a supernova. But a more modestly sized star, like our sun, will puff up ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

Ultra-metal-poor (UMP) stars (with iron abundances [Fe/H] below -4) are extremely rare, given that only a few dozen of such objects have been identified to date. They are assumed to be direct ...

In a few billion years the Sun will destroy the solar system’s inner planets – and if it’s lucky it might get a big cool scar to brag about. That’s what happened to a white dwarf that astronomers have ...

Stars are giant factories that produce most of the elements in the Universe – including the elements in us, and in the Earth’s metal deposits. But what stars produce changes over time. Two new papers ...

Subscribe to our newsletter for the latest sci-tech news updates. Ultra-metal-poor (UMP) stars (with iron abundances [Fe/H] below -4) are extremely rare, given that only a few dozen of such objects ...