For most of scientific history, chemical elements were identified through materials that could be handled, heated, weighed or examined in a laboratory. Helium followed a very different path. It first ...

Add Yahoo as a preferred source to see more of our stories on Google. Artist's view of WASP-107b. The planet's low density and the intense irradiation from its star allow helium to escape the planet ...

Most of the gas in the Universe is a mixture of hydrogen and helium. It’s thought that the initial atmospheres of most planets also start out that way. However, over billions of years, as planets ...

New observations regarding the composition of distant galaxies reveal insights into the earliest phases of the universe that confirm decades of scientific understanding of the elements and particles ...

Astronomers from the University of Geneva, working with colleagues in Canada and the United States, have captured the clearest view yet of an exoplanet losing its atmosphere into space. Using the ...