Have you ever wondered what it’s made of? Bintang that exist in the universe? As you know, stars are spheres of incandescent gas that emit light and radiate heat.
Researcher from the National Agency for Research and Innovation (BRIN) Center for Space Research (PRA), Rhorom Priyatikanto, said stars are formed from gas clouds that accumulate and heat up.
“When the density and temperature are high enough, there will be a hydrogen fusion reaction in the star’s core, that’s when the star will be born,” he said, quoted by the official LAPAN website, Wednesday (10/12/2022) .
Why can the stars shine?
Rhorom explained that there are many methods used by an astronomer to observe the stars for research.
“Stargazing is usually done with a telescope. Methods used may include photometry (measuring the brightness of stars), astrometry (determining the position of stars), spectroscopy (examining the spectrum of stars) or similar. “, has explained .
He also explained that stars shine because they produce energy through fusion reactions.
“Stars appear to flicker because their light passes through the rippling atmosphere of the Earth. Like when we see a coin at the bottom of a pool where the water is clear but not calm,” Rhorom said.
Reason Bintang Disunited
In his presentation, Rhorom also stated that Bintang’s cause can explode and be dispersed.
According to him, the star exploded because there was a push from inside the star. This impulse could be due to a too powerful nuclear reaction or the effects of a nuclear collapse (supernova).
“The stars explode leaving a core that continues to shrink. The rest can be white dwarfs, neutron stars or black holes,” he explained.
According to Rhorom, the Sun is also classified as a star. The sunlight is decomposed so that the spectrum of the Sun is obtained with a very high resolution.
In it there are lines of absorption (absorption) or emission (radiation). Each line has a certain thickness and sharpness. From there, astronomers then study the elements of the Sun.
“By learning from the features and inside of the Sun, astronomers build an astrophysical model of the star’s content. The model produces a series of numbers that can be confirmed by observations, such as the brightness of the star, the composition of the star, the temperature. of the star and so on, “said Rhorom.
The researcher who is currently carrying out a postdoctoral program in the UK explained that the ongoing research is a research on the climatology of the Kupang area which is relevant to the National Observatory of Timau in Kupang, related to the orbital models of satellites. , and related to white dwarfs that have the potential to have planets.
Evolution of the stars formed by Nebula
Meanwhile, the head of the Indonesian space agency, Thomas Djamaluddin, concluded that in relation to the stars from birth to death, Bintang “transmits” the language of electromagnetic waves.
“Distant stars actually speak to us in the language of electromagnetic waves, ranging from long radio waves to short waves, X-rays and gamma rays,” he explained.
“All provide information relating to the physical star of the star with various colors at various distances then assisted by the interpreters of the astronomers, so the language used is the language of electromagnetic waves and then translated, interpreted with the language of physics and mathematics,” he added Thomas.
According to Thomas, the evolution of the stars was formed by nebulae which then with the physical process became denser and warmer.
Then there is a reaction of hydrogen which becomes helium and produces energy.
“We already know the formula e = mc2, it is m that is the mass is the difference between the masses of 2 hydrogens and 1 helium produced, the mass difference that becomes the enormous energy of evolution Bintang it, “he said.
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(do / erd)
