Open source mind

Red is the most common color in national flags


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The planet formed 4.54 billion years ago
The Moon is the only celestial body on which human beings have made a manned landing
The average diameter of the Earth is about 12,742 km
The Sun has a diameter of about 1,392,000 kilometers
Hydrogen is the chemical element with atomic number 1
Several mechanisms have been historically proposed for the Moon\'s formation 4.527 ± 0.010 billion years ago
Chemistry is for people interested in science, which is not all people.
Naturally occurring elemental hydrogen is relatively rare on Earth
Raw horse meat is a popular food in Japan.
Astronomy is not the same as astrology, although 83% of people don\'t know that.
Current interpretations of astronomical observations indicate that the age of the Universe is 13.73 (± 0.12) billion years
The Sun is the star at the center of the Solar System
The meter was originally defined as 1/10,000,000 of the distance from the equator to the North Pole through Paris, France
The Union of Soviet Socialist Republics (USSR) was a constitutionally socialist state that existed in Eurasia from 1922 to 1991
The Sun is the star at the center of the Solar System
The Sun accounts for about 99.86% of the Solar System's mass
The average diameter of the Earth is about 12,742 km
Stars in the main sequence are mainly composed of hydrogen in its plasma state
Several mechanisms have been historically proposed for the Moon\'s formation 4.527 ± 0.010 billion years ago
The Solar System formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago



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