BIG BANG WELL

The film about the history of the Universe begins with the Big Bang. The Big Bang Theory, commonly known in English as the Big Bang, is a prominent cosmological model that describes the early stages of the formation of the Universe. According to this theory, the Big Bang occurred approximately 13.798 ± 0.037 billion years ago, and is considered by cosmologists to be the age of the universe. After this period, the universe was in an extremely hot and dense state and began to expand rapidly. After the inflationary period, the universe cooled enough that radiant energy (photons) converted into many subatomic particles, including protons, neutrons, and electrons. Although simple atomic nuclei could form quickly after the Big Bang, it took thousands of years for electrically neutral atoms to appear.

The first element produced is hydrogen, along with small amounts of helium and lithium. Huge clouds of primordial elements then gravitationally converged to form stars and galaxies and then superclusters of galaxies, and the heavier elements were either synthesized within the stars or born from supernova explosions. (Wiki)

PLANET SIMULATION ORB

This is a very popular model in museums and science centers around the world, however this is the first and only sphere currently in Vietnam. This 1.5m diameter sphere not only "tells" us interesting stories about many different topics related to the Earth (day and night, geology, climate, resources,...) as well as the planets in the MT System, but also brings before our eyes actual images of the surfaces of these celestial bodies, along with the most specific information and numbers. From there, children in particular and the public in general have the most intuitive view of the planets in the MT system

SOLAR WALL PIECE AND PLANET-SIZE SIMULATED SPballS

The curved wall simulates the Sun in the middle, 8 suspended spheres simulate the positions of the planets, from near to far from the Sun (Mercury, Venus, Earth, Mars, Jupiter, Saturn). Venus, Uranus, Neptune). At the same time, they simulate almost exactly the size ratio between planets. For example, Jupiter would have a diameter about 10 times that of Earth.

The components that make up the Solar System

The Sun, our own star, contains 750 times the mass of all the Solar System’s planets put together. In its core, nuclear reactions produce helium from hydrogen and generate huge amounts of energy. This energy gradually moves outwards until it escapes from the Sun’s surface.

The story behind the distances from the Sun to the planets: it is Bode's law, which states that these distances, relatively speaking, form a geometric progression with a ratio of 1.75. This law contributed to the discovery of the Asteroid Belt.

The story behind the symbols:

- ☿ - Mercury: spear of Mercury (Roman), or Hermes (Greek) - son of Zeus, with additional hyphen below

- ♀ **-** Venus: mirror-shaped, possibly because Venus is associated with copper metal, often used as a mirror in the past. It could also be the necklace of Venus (Roman) or Aphrodite (Greek). Also a symbol of women.

- - Earth: the circle symbolizes the world, the river flowing from the Garden of Eden divides the world into four corners.

- ♂ - Mars: shield and spear of the god of war Mars (Roman), or Ares (Greek) - son of Zeus. Also the symbol of men and of the element iron.

- ♃ - Jupiter: the letter *zeta* with a vertical line, symbolizes Zeus (Greek), or Jupiter (Roman).

- **♄** - Saturn: the letters *kappa* and *rho* with a dash, represent Kronos (Greek), or Saturn (Roman), father of Zeus.

- ⛢ - Uranus: Created in the 18th century. Is the symbol for new platinum discovered at the same time. Uranus (Greek) was the father of Kronos.

- ♆ - Neptune: Trident of Neptune (Roman), or Poseidon (Greek).