If these particles were coming from billions of light ... explain why ultra-high-energy cosmic rays appear to originate from ...

In previous decades, the Einstein X-ray Observatory and ROSAT telescopes detected highly energetic X-rays coming from the white dwarf at the center of the Helix Nebula named WD 2226-210 ...

Alpha Centauri, the nearest star system to the sun, is probably shedding comets and asteroids into our solar system — and even producing a few meteors in our sky. Located just 4.3 light-years ...