One dwarf galaxy seems to consist of nothing but hydrogen and helium, no heavier elements, which is how the universe was ...

Although the findings are yet to be confirmed, it marks the closest astronomers have come to locating these ancient stars ...

Astronomers have discovered what they're calling a "two-faced" star, one side is composed almost entirely of hydrogen and the other side is made up of helium. It's a first among white dwarf stars. It ...

Molecules containing noble gases shouldn’t exist. By definition, these chemical elements — helium, neon, argon, krypton, xenon and radon — are the party poopers of the periodic table, huddling in the ...

Nuclear fusion supplies the stars with their energy, allowing them to generate light. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Nuclear ...

To understand the dawn of chemistry, scientists can’t use test tubes and flasks: They need a modified Boeing 747 jet. Caitlin Saks and Arlo Pérez Esquivel learn all about NASA’s unique SOFIA ...