Galaxies

Two controversial new studies suggest the discovery of large objects at the outer reaches of the solar system

A new breed of giants raises questions about how the biggest galaxies arise

Newly discovered lobes stretch tens of thousands of light-years above and below the Milky Way's disk. Where did they come from?

The Dark Energy Survey is examining distant galaxies to figure out why space is expanding at an ever faster pace

Astronomers get closer to an explanation for the unexpected abundance of gamma rays at the core of our galaxy

The recently discovered small galaxy Leo P contains only about a hundred-thousandth as many stars as the Milky Way, but it's bucking the small galaxy trend by continuing to make new ones

The presence of the gas could have implications for theories of the early solar system

Astronomers have detected faint light that dates from shortly after the big bang

Gravitational waves from the most promising black hole binary system candidate yet could help shine a light on how these monsters at the hearts of galaxies merge

A galactic satellite reveals where some of our galaxy's elusive material is hiding 

Research reveals today's produced energy is only about half of what it was 2 billion years ago