When the universe was a fledgling billion years old, a galaxy spewed a ginormous, fast-moving jet of radiation and plasma into the cosmos. Nearly 13 billion years later, that jet is visible to humans in the form of a blazar. The jet was recently imaged and analysed by a team of Italian astronomers. Their findings, which…
Scientists just made a huge announcement: Telescopes around the world recorded a source of mysterious, ultra-high-energy cosmic rays, the highest-energy particles that hit the Earth. It all started with a text message.