Earth is one of the planets in the solar system cluster, with the Sun as the center of its revolution. The solar system is a number of celestial bodies attached to one star as the center of gravity.
In this case, the Sun is the center of gravity. The celestial bodies in the solar system consist of planets, satellites, asteroids, meteors, and comets.
In the solar system there are eight planets, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. All of the planets periodically revolve around the Sun (revolution), besides each planet also revolves around its own axis (rotation).
The revolution and rotation of each planet has a different time. Depending on the distance of each planet from the Sun. Besides Mercury and Venus, the other six planets have satellites.
This means that the six planets have celestial bodies that regularly revolve around them for a certain period.
The moon (moon) is known as the satellite of the Earth. Deimos and Phobos are two satellites of Mars; Ganymede, Io, Callisto, and Europa are the moons of Jupiter; Saturn has 60 satellites, one of which is named Titan with a size larger than Mercury; Uranus has 27 satellites, including Titania, Ariel, Umbriel, Oberon, and Miranda; while Neptune has 13 satellites, one of the largest is named Triton.
Pluto was once considered one of the planets in this solar system cluster. However, scientific developments suggest that Pluto is no longer considered a planet, but a dwarf planet.
The reason is because Pluto is still in the trajectory of the Kuiper Belt so that in Pluto's environment there are still celestial bodies other than its satellites.
A planet is defined as a planet, one of which is if in the environment there are celestial bodies other than its satellites. The change in Pluto's status is based on the agreement of Astronomy experts at the meeting of the International Astronomical Union on August 24, 2006.
Planetarium
Natural phenomena in the form of clusters of the solar system are an amazing order. Its existence shows the existence of life until the end of time. We can observe and study the solar system by visiting the planetarium.
Planetarium is a place that plays a show in the form of a simulation of the 'life' of the solar system.
In a planetarium there is usually a theater, where the simulation is held. Shows are usually held at night. In addition, the planetarium offers its visitors the opportunity to study astronomy in general.
The roof of a planetarium is dome-shaped. Unlike observatories, although they are both dome-shaped, planetarium domes cannot be opened and closed. This is what distinguishes a planetarium from an observatory. However, there is also a planetarium which is also an observatory.
In the display room of a planetarium, there is a collection of images reflected on the projector. This projector is usually located in the middle of the show room and demonstrates various stories with certain narratives about the 'life' of the universe.
In addition, the show is also accompanied by music. Each seat in the performance hall can be reclined so that visitors can also observe the performance on a screen placed inside the dome ceiling. Usually the show takes place according to the theme offered at each planetarium.
There are 3,300 planetariums worldwide, the most in the United States, with 1,500 planetariums. In Europe, there are at least 450 planetariums.
In Indonesia, there are three planetariums, namely in Jakarta (Taman Ismail Marzuki, which doubles as an observatory), in Kutai, East Kalimantan, and in Surabaya.
Planetarium in Indonesia
The planetarium in Taman Ismail Marzuki, Jakarta is the oldest planetarium in Indonesia. This planetarium was founded in 1964 at the initiative of the then-presidential president, Ir. Sukarno.
Apart from being an educational facility that presents performances about space, this planetarium has a museum as an exhibition space for various astronomical knowledge related to celestial bodies and the universe in general.
The show which is presented at Planetarium Jakarta has a running time of about 60 minutes. There are 9 titles of shows which are presented alternately.
If you are interested in learning more about the 'life' of the universe, you can observe it directly by visiting the museum in the planetarium.
Apart from that, of course, you can't just miss participating in one of the show programs, such as the one offered by Planetarium Jakarta. You can visit one of the planetariums closest to your area.