A gamma ray glow at our galaxy’s center has puzzled scientists for almost two decades. New computer simulations back the theory that dark matter could be the source.
Earth's moon is occasionally illuminated by flickers, glows or beams of light. What are these mysterious lights?
Comet Lemmon (C/2025 A6) makes its closest approach to Earth on Oct. 21, about 24 hours after the fainter Comet SWAN (C/2025 ...