Tammy Awtry

All Stories by Tammy Awtry

  1. Brain

    Purple exists only in our brains

    Most colors represent a single wavelength of light. But your brain invents purple to deal with wavelengths from opposite ends of the visible spectrum.

  2. Space

    Here’s why the moon must get its own time zone

    But should moon time be like Earth time — or quite different? At issue: The moon’s lesser gravity will make seconds there tick faster than on Earth.