Einstein's general theory of relativity suggests, among other things, that masses in space distort the geometry of space-time. In addition, moving objects emit waves of gravitational radiation that carry energy away into space.
This diagram shows our cosmic address at a glance. We see our planetary system around the Sun, our stellar neighborhood in our galaxy, our galaxy in the local group of galaxies, and our group in the entire universe.
When it's time for a little perspective... Just remember, you are an infinitesimal speck in the Grand Order of the Universe....
With a pair of binoculars or a small telescope, many spectacular features can be spotted on the moon.
Our Solar System.
Backyard renovations presenting the pergola! #JacksWarehouse