#Speed of light

Author: Lisa Grossman / Source: Science News When a pair of ultradense cores of dead stars smashed into one another, the collision shot a bright jet of charged subatomic particles through space. Astronomers thought no such jet had made it out of the wreckage of the neutron star crash, first

When our ancestors looked up at night, they saw the star-studded dome of heaven. It’s easy to understand why they thought this. Even today, gazing at the sky, the stars appear fixed on... read more