Space Physics 
Earth and the solar system
The Earth, Moon and Sun
The solar system
Orbiting bodies
Gravitational effects on orbits
Stars and the Universe
The sun as star
Stars
The Big bang theory
The expanding Universe
Hubble & the age of the Universe
The universe was created by a singularity called the big bang
The universe is approximately 13.8 billion years old
Hubble constant
There are more than 200 sextillion stars in the Universe
The sun is 4.6 billion years old
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The Temperature during the Big Bang was 10 Billion degrees
The first stage of the big bang was the radiation era
This was due to the dominces of radiation
The radiation era was broken up and divide into
smaller segments. Which are known as epochs
These epochs are known as Planck , Grandfield ,Inflationary , Electroweak , Quark , Hadron ,Lepton , Nuclear
The second stage was the Matter era
The matter era consists of 3 epochs which are
Atomic, Galactic , Steller
This era started to begin when matters started to
form, this spaneded for billion of years
started with an infinitely hot and dense single point that inflated and stretched at unimaginable speed.
The Big Bang happened approximately 13.8 billion years ago
When the Big Bang happened it was faster then the speed of light
Formula is v = H0D
The age of the Universe
The age of the Universe is about 13.8 billion years old
The age of the universe is calculated by hubbles constant
The Hubble constant is the most recent precise measurements of the distances and movements of distant, exploding stars
Hubble's law is used for understanding the motion of astronomical objects due to the expansion of the universe.
There are average stars, Red giants, white dwarfs and black dwarfs.
our son is classified as an average star
There are eight planets in our solar system
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Earth
Moon
Sun
The Earth is 4.5 billion years old
Yes, the earth is not flat
The moon surrounds the Earth
The moon was created by smashing into the Earth
The sun is 4.6 billion years old
Huge, but an ant compered to a giant star
gravity influences the paths taken by everything traveling through space.
It keeps planets in orbit.
It makes it possible to use human-made satellites and to go to and return from the Moon.
An orbit is a regular, repeating path that one object takes around another object or center of gravity.
Orbiting objects, which are called satellites, include planets, moons, asteroids, and manmade devices.
Objects orbit each other because of gravity. Gravity is the force that exists between any two objects with mass.