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Formation of the Elements

Across
These types of elements are made in high mass stars that require more energy, higher temperatures, and during a explosion of a supernova.
All space, time, energy, and matter in space.
This subatomic particle has a net neutral charge.
During a supernova explosion, elements heavier than iron and nickel occurs during this process.
A theory that states the universe began as a small point that rapidly expanded about 14 billion years ago.
Down
The lightest noble gas, containing two protons, and two electrons.
A nuclear reaction in which two lighter nuclei combine to produce a nucleus of heavier mass and results in the release of a large amount of energy.
The explosion of a high mass star at the end of its life cycle that creates and ejects heavy elements into space.
A self-luminous celestial body consisting of a mass of gas held together by its own gravity in which the energy is generated by nuclear reactions in its interior.
This subatomic particle carries a negative charge.
This subatomic particle has a positive charge.
An element containing one proton, and one electron. It is colorless, odorless, and highly flammable gas.
These types of elements are made in nuclear fusion in both low mass and high mass stars.