Dark Grey Planet 01

Dark Grey Planet 01

Warm, cold and hot near the stars,

Four seasons of spring, summer, autumn and winter,

The billowing dust lay,

Yin and Yang all things turn into virtual clouds.

The age of the universe is 13.8 billion years, and the diameter is about 93 billion light-years

The Pisces-Cetus Supercluster complex is 1 billion light-years long and 150 million light-years wide.

The Laniakea super galaxy has a diameter of 520 million light-years and contains 100,000 galaxies.

The Virgo Supercluster is 100 million light-years in diameter and contains 47,000 galaxies.

The Local Group of Galaxies is 10 million light-years in diameter and contains 50 galaxies

The Andromeda Galaxy is 220,000 light-years in diameter and has 1 trillion stars.

The Milky Way is 180,000 light-years in diameter and has 400 billion stars.

What is the concept of light year

Commonly used units in astronomy are parsecs, astronomical units and light seconds

An astronomical unit is 149,597,870,700 meters

A light second is the distance traveled by light in one second and is 299,792,458 meters.

A light-year is 9,460,528,177,426.821 meters.

One parsec equals 3.26 light years

The speed of the earth's movement around the sun is 29.79 kilometers per second,

The speed

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