The universe on a human scale..

https://www.facebook.com/groups/167571775253963/permalink/318118420199297/?sfnsn=mo&ref=share

This is an amazing illustration of how vast and how magnificent our universe is and shows us how small we are compared to other planets and galaxies.. ( we are not the center of the universe ) .. enjoy..

Light Propelled Spacecraft!

While rockets and sailboats are both means of transportation to get from one location to another, they have a key difference in propulsion: rockets carry fuel to accelerate while sailboats don’t. When a rocket’s fuel runs out, it can’t accelerate anymore. However, sailboats have a constant source of acceleration from the wind without having to […]

Light Propelled Spacecraft!