4. Earth’s Setting in Space

Sunset and the moon at one of the beach by Tofino, British Columbia. May 2014.

Universe and Galaxies

When staring at the sunset, I always imagine how great is the universe and where are we actually? Universe contains all matter and energy existing anywhere in space and time, and within one of the Superclusters there is local galaxy (an organized disk-like assemblage of billions of stars) group (out of 30 galaxies), in one of them is where our Milky Way locates. The corner of that galaxy is the Solar System, and planet Earth is one of the eight major planets orbiting the Sun. In addition, all distances are measured in light years and the distance that travelled by a pulse of light in one year is approximately 9.46 trillion kilometers. This reflects how small we are and the greatness of the Universe!