BIG BANG THEORY
The Big Bang is a hypothesis of how the cosmos began, which then created the stars and galaxies that we see today. The Big Bang is the term used by physicists for the most popular explanation of the universe from the very early stages to the present day. The universe started as a very hot, thin, and dense super force (the combination of the four fundamental forces), with no stars, atoms, shape, or structure. Instead space grew very quickly about 13.8 billion years ago. This began atom forming which eventually led to star and galaxy forming. It was Georges Lemaitre who first observed (in 1927) an acceleration. The Big Bang Theory is based on several different discoveries from physicists. The most prominent of these is the redshift of galaxies very far apart. Redshift is the light-Doppler effect. When an object moves away from Earth, the colour rays appear more like the colour red than they truly are, as the shift extends the spectrum of light that the body gives out. Researchers use the term 'red hot' to describe this extended light wave, since red is the visible spectrum's longest wavelength. The more redshift there is, the quicker the push away from the target. Scientists have shown that the universe is expanding by calculating the redshift, so they can figure out how quickly the force is travelling away from the Planet. Scientists say the universe became a singularity around 13.8 billion years ago, with very accurate observations and measurements. Although most objects get cooler when they grow, scientists think the universe was very small and very hot when it began.
Telescopes
Use telescopes to touch us distant stars and galaxies are too far behind. We can't go to discuss it with them. So what we know about distant stars and galaxies comes from studying the radiation that they emit. Telescopes are instruments that allow exploration of the universe. There are several different forms and there are several that are also in space.
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Optical telescopes: Optical telescopes are used to detect visible light from space. Small cameras make it fairly easy for amateurs to see the night sky, although there are very large optical telescopes for professional astronomers to use around the globe. There are some disadvantages of the optical telescopes on the ground: they can only be used at night when the atmosphere is bad or gloomy.
Radio telescopes: Radio telescopes are used to detect electromagnetic waves that originate in space. Such telescopes have an advantage over conventional telescopes as they are typically very large and costly. These should be used in poor weather as clouds do not obstruct the radio waves when these cross the atmosphere. Radio telescopes can also be used at night and during the daytime. X-rays are partly obscured by the Earth's atmosphere, which means that X-ray detectors must be at high altitude or fly in balloons.
Space crafts: A spacecraft is a device or system that is designed to fly out into space. Spacecraft, a form of artificial satellite, was used for a range of purposes, including communications, Earth observation, meteorology, navigation, space colonisation, planetary exploration, and human and cargo transport.
Theories of universe
The World's Big Bang Hypothesis According to the Big Bang theory, the whole World was a very low, incredibly hot and dense region about 13.8 billion years ago. Through this tiny point, the entire Galaxy expanded forward to what now remains. Proof from the red shift Astronomers have discovered that the farther distant a galaxy is, the redder the light changes, in general. Which means the quicker the galaxies travel, the farther out they are. That is close to an explosion, where the pieces move the most from the blast furthest. Red change evidence shows the Universe is expanding, including space itself. A cosmic microwave background radiation (CMBR) has since been discovered by CMBR Astronomers. It comes from both spatial directions and has a temperature of about-270 ° C. The CMBR is the remnants of the Big Bang thermal energy disseminated slowly in the Universe. The cosmic background radiation observation, after the hypothesis had predicted it, offered very good evidence for the Big Bang theory, which contributed to the Big Bang being the Universe's widely established model of growth. Another hypothesis about the World, called the Steady State Principle, suggests that the World has already been, and that as the Universe expands, the Universe grows and continuously produces matter. The red shift data confirms the theory, but not the CMBR. The Steady State hypothesis has lost momentum since the observation of the CMBR, and is no longer thought probable.
The Big Bang Theory is a cosmological hypothesis of the observable universe from the earliest understood times to its eventual large-scale evolution. The concept explains how the universe evolved from a very high-density and high-temperature initial state[4] which offers a detailed explanation for a broad variety of observed observations, including the accumulation of light particles. The established laws of physics can be used to quantify the universe's characteristics in detail back in time to an initial state of extreme density and temperature.[7] Precise measurements of the universe's rate of expansion put the Big Bang at around 13.8 billion years old, which is thus called the universe's age.[8] After its initial expansion, the universe was sufficiently cooled to the point where the universe grew. Later, massive clouds of these primordial elements–mainly hydrogen, with some helium and lithium–coalesced through gravity, creating early stars and galaxies whose descendants are visible today. Astronomers observe the tidal influence of an unseen dark mass surrounding stars, in addition to these primordial building materials. Much of the universe's gravitational potential seems to be of this shape, and the Big Bang theory and various experiments suggest that the atoms are not created by normal baryonic matter. Measures of the supernovae's redshifts suggest that the expansion of the universe is accelerating, a phenomenon due to the presence of dark energy.
In conclusion I think that big bang theory has more evidence to prove how the universe is formed and astronomers have done few experiments on this also there were many observations done om this. Even though this is just a theory it can change the way of people thinking about our universe there is even a possibility that it might explosion but there is no evidence for that this makes us think that big bang theory actually works in real life.
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