7 Oldest Known Planets in the Universe
Advances in technology have allowed some astronomers to be willing to pay attention to planets outside our solar system, known as exoplanets. Not only recognize the planets, some astronomers know the age of the planets that have been successfully seen. Currently, it is believed that Earth is 4.5 billion years old and is not one of the first planets to be created.
You may want to know, what planet was first created in the universe and how old is it? To answer your curiosity, read the review below.
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Here are 7 Oldest Known Planets in the Universe
All the planets in our solar system have almost the same age, but Jupiter is believed to be the oldest. Predictions of this planet being created about a million years before the Sun and are currently about 4.6 billion years old, according to the Space website. Jupiter is the 5th planet from the Sun and is larger than all the other planets in our solar system.
The presence of Jupiter was first detected in 1610 by the popular astronomer Galileo Galilei. Then in 1979, some researchers were surprised to find out that Jupiter has rings, although not as clear as Saturn.
When the planetary mechanism TRAPPIST-1 was first discovered, some researchers predicted that the planetary mechanism was only about 500 million years old. However, taken from the Exoplanet Exploration Program website, studies on this planet were always carried out until research was launched in 2017 if this mechanism was between 5.4 - 9.8 billion years old, which means 2x the age of our solar system.
This mechanism is divided into the coldest red dwarf stars and seven temperate terrestrial planets, three of which are in the habitable zone. This evidence has led some researchers to learn more about what might or might not survive outside our solar system. For now, it is not known whether any of the 7 TRAPPIST-1 planets have conditions that can provide life support.
NASA discovered the planet Kepler-452b in 2015 and caused a stir in the scientific commune. The planet, which NASA calls Coruscant, was the first Earth-like planet in the habitable zone, which resulted in Kepler-452b being called Earth 2.0 or nephew of Earth.
Kepler-452b is 60% larger in diameter than Earth and is called an extrasolar Earth. Currently, it has not been found whether Kepler-452b is a rocky planet like Earth and has a habitable environment. It is estimated that Kepler-452b is 6 billion years old, and further research is being carried out on the planet to verify its status.
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4. 51 Pegasi b
51 Pegasi b
Planet 51 Pegasi b was first discovered in 1995 and became one of the most important discoveries in the history of space exploitation. notes Based on the Exoplanet Exploration Program, 51 Pegasi b is the first planet outside our solar system to be found around a sun-like star.
Over the last two decades, researchers have studied 51 extensively and obtained a wealth of evidence about the planet. 51 Pegasi b is very close to its sun and completes its orbit in about 4 days. In addition, 51 Pegasi b is the first discovered planet to be called a 'hot Jupiter' because of its similarity to Jupiter and its proximity to its sun. It is predicted that 51 Pegasi b is the oldest planet in the universe with an age of 6.1-8.1 billion years.
5. 55 Cancri e
55 Cancri e
Some astronomers first discovered the planet 55 Cancri e in 2004. Planet 55 Cancri e is believed to be one of the oldest planets with an age of 10.2 billion years.
According to a 2016 study using data from NASA's Spitzer Space Telescope, researchers believe 55 Cancri has a channel if above it. This planet has a fixed facet of day and night. In 2017, before analysis was deeper than some of the data that had been originally compiled, NASA said it could find the chance of having an atmosphere similar to Earth's, but thicker.
In 2015, astronomers working on NASA's Kepler vision announced that they had discovered a new planetary mechanism that existed some two billion years after the Milky Way was first created. The five-planet mechanism, called Kepler-444, is estimated to be around 11.2 billion years old. This makes Kepler-444 the oldest known terrestrial-sized planet mechanism.
The five planets in the Kepler-444 mechanism vary in size, with the smallest being similar to Mercury and the largest being similar to Venus. All planets in this mechanism only take about ten days to orbit their sun. According to the Futurism website, this makes the entire planet too hot to provide any kind of life support.
7. PSR B12620-26 b
PSR B12620-26 b
PSR B12620-26 b is the oldest exoplanet found in the universe, estimated to be 13 billion years old, according to NASA's Hubble Space Telescope website. The presence of PSR B12620-26 was first discovered in 1987, and in 2003 several researchers confirmed its presence as a planet with the contributions of the Hubble Space Telescope.
PSR B12620-26 b is described as hot versus Jupiter, but 2.5x as massive as Jupiter. In addition to being the oldest planet ever discovered, PSR B12620-26 b is the first verified circumbinary planet to orbit around the pulsar PSR B12620-26 and the white dwarf WD B1620-26.
For now, all of these planets are the most ancient planets in the universe. However, it is also possible that in the future researchers will find other planets older than these planets, as studies continue to be carried out and technology continues to be updated.