SciencePlanet X May Be Responsible For Mass Extinctions On Earth A retired astrophysicist said Planet X could have caused mass extinctions on Earth. The elusive planet has been triggering comet showers, roughly every 27 million years, that result in periodic mass extinctions.by Katherine Derla
ScienceScientists Detect First Possible Signature Of Dark Matter Annihilation In The Milky Wayby Deepthi B
ScienceNew Horizons Spot Remnants Of Frozen, Former Lake Of Liquid Nitrogen On Plutoby Milafel Dacanay