The planet formed 4.54 billion years ago
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The Universe comprises everything we perceive to exist physically, the entirety of space and time, and all forms of matter and e
The Solar System consists of the Sun and those celestial objects bound to it by gravity
Juipter is the largest planet in the Solar System
Hydrogen is the chemical element with atomic number 1
There are nearly 7 Billion people on planet Earth
The Moon makes a complete orbit around the Earth every 27.3 days
It would take more than 150 years to drive a car to the sun
The pull of gravity at the Moon\'s surface is about 17 percent of that at the Earth\'s surface
The Union of Soviet Socialist Republics (USSR) was a constitutionally socialist state that existed in Eurasia from 1922 to 1991
The Moon's diameter is 3,474 kilometres
Stars in the main sequence are mainly composed of hydrogen in its plasma state
Chemistry is for people interested in science, which is not all people.
The Universe comprises everything we perceive to exist physically, the entirety of space and time, and all forms of matter and e
The Sun is the star at the center of the Solar System
Hydrogen has an atomic weight of 1.00794 u
The Sun has a diameter of about 1,392,000 kilometers
Stars in the main sequence are mainly composed of hydrogen in its plasma state
Hydrogen is the lightest and most abundant chemical element, constituting roughly 75 % of the Universe\'s elemental mass
The Solar System consists of the Sun and those celestial objects bound to it by gravity
Hydrogen is represented by the symbol H
