california institute of technology

  • These Companies Want to Beam Space-Based Solar Power to Earth

    These Companies Want to Beam Space-Based Solar Power to Earth

    Space manufacturing startup Orbital Composites and space energy company Virtus Solis have announced a collaboration to bring space-based solar power even closer to reality. The two have announced a megawatt-scale space-based solar power station that can collect energy from the Sun and beam it down to Earth.


  • How Do We Know How Old Fossils Are?

    How Do We Know How Old Fossils Are?

    Paleolithic hunters built mammoth traps in what is now Mexico some 14,700 years ago. An unknown sea creature left footprints in sand some 550 million years ago, making them the oldest known footprints on Earth. The mysterious Denisovan humans reached southeast Asia 160,000 years ago, as evidenced by a jawbone found on the Tibetan Plateau.…