M87 was the first black hole to be imaged, and now it's revealing details of how some elementary particles are accelerated by the universe's most extreme environments.
A new image by the Chandra X-ray Observatory reveals an unidentified celestial object, dubbed C4, getting blasted by a jet of energetic particles, raising questions about its identity.
Iceberg velocity is a major factor in where the pinnipeds choose to spend their time, adding complexity to the decision-making of the slippery mammals.