Mysterious gas 'bullets' race from Milky Way's only known helium nova at up to 20 million mph

Mysterious high-speed "bullets"—clumps of possibly oxygen-rich gas traveling at up to 20 million miles per hour—have been ...

A Powerful Cosmic Accelerator Has Been Confirmed in the Milky Way

Scientists have identified an accelerator that produces the highest-energy protons in our galaxy, a finding that could ...