Celestial Speeds

  • Light: 386,000 miles per second / 670 million miles per hour.
  • Sound: 767 miles per hour at room temperature
  • Acceleration of gravity: 32.16 ft./second.
  • Rate of universe’s expansion: 73 kilometers (47 miles) per second per megaparsec (3.27 light years).
  • Earth rotates around the sun about 30km (20 miles) per second.
  • At the equator, the earth spins at 1000 miles per hour.
  • The Sun orbits the galactic center at roughly 200km (130 miles) per second.
  • The entire Local Group of galaxies, including the Milky Way, is hurtling toward a mysterious concentration of mass in the direction of Centaurus at more than 600km (380 miles) per second.

Jude Currivan, Cosmologist
Author, The Story of Gaia: The Big Breath and the Evolutionary Journey of Our Conscious Planet

My other sites—

Contemplative Photography

David L. Smith Photography Portfolio.com

Ancient Maya Cultural Traits.com

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