Immediately after the Big Bang, before the first stars in the Universe ever formed, the Universe consisted of hydrogen (element #1), helium (element #2) and pretty much nothing else. Despite ...

Our Sun is the greatest source of heat and light in the entire Solar System, fusing hydrogen into helium in a nuclear chain reaction in its core. Because an atomic nucleus of helium is 0.7% lighter ...

A new study suggests rare earth elements form in magma above ancient subduction zones, as that magma reacts with substances ...

The story of the fifteenth element began in Hamburg, in 1669. The unsuccessful glassblower and alchemist Hennig Brandt was trying to find the philosopher’s stone, a mythical substance that could turn ...

Are we made of stars? This video segment adapted from NOVA features scientists studying light emissions from exploding stars, called supernovas. Their observations and analyses can tell us the origin ...

For now, they're known by working names, like ununseptium and ununtrium — two of the four new chemical elements whose discovery has been officially verified. The elements with atomic numbers 113, 115, ...

Nearly 70 years ago, astronomer Paul Merrill was watching the sky through a telescope at Mount Wilson Observatory in Pasadena, California. As he observed the light coming from a distant star, he saw ...

Elements and Compounds Examples: This article explains the definition of elements and compounds, their characteristics, differences, and examples. Read this to understand these terms better.