Today the human race has come so far that we are planning to colonize Mars. When it comes to science, it has always been the effort of a few individuals that have changed a lot of things in the world. The discoveries and inventions have impacted in both good and bad ways.
The discoveries and inventions happen on a regular basis. But there are only a few that will have so much importance and has a considerable amount of impact in the particular field. In this article, we will discuss the important discoveries in the field of Astrophysics.
The Dark Energy has been discovered by using the Hubble constant and the supernovae of distant stars. According to it, the universe is not contracting and not static. On the contrary, the universe is expanding, and it is speeding up. To account for this concept, an unknown form of energy called the dark energy was proposed by the leading and eminent astrophysicists. There is still a debate going on whether it is a scalar property or something dynamic. As of now, the astrophysics states that 74% of the energy in the universe is dark energy.
The age of the universe
Until a point, the age of the universe was something that cannot be calculated. It remained a huge question among a lot of people. We should especially thank the red shifting measurements for this discovery. It is because of that the cosmic background radiation, and the age of some of the globular clusters in the galaxy was found. This is how the scientists were able to calculate the age of the universe which is approximately 13.75 billion years.
Red shifting and the Hubble constant
The speed at which the galaxy is receding away from the earth can be calculated by the Hubble’s Law. This shows that galaxies are constantly moving away from us. By this, it also provides the basis for the Big Bang Theory. This discovery in particular contributed a lot to the research of many other scientists which showed that the speed at which the galaxies are expanding is faster than what was predicted. It was based on the redshifts of distant supernovae.
Even some common people know about black hole because of the unparalleled work of Stephen Hawking. A black hole is a region in space where everything that comes near it gets sucked. Nothing can escape from a black hole, not even light. It is because of the massive gravitational force from a single point. Many astrophysicists believe that black holes are formed because of the collapsing of the stars. It is also stated that most of the spiral galaxies have a black hole in the center of it.
The Theory of Relativity
The Theory of Relativity was proposed by the famous scientist Albert Einstein in the year 1915. Relativity theory replaced Newton’s theory of mechanics as the basis of astronomy. According to Einstein, the motion was relative and time is a concept that is depended on velocity. The Theory of Relativity paved ways to many discoveries and explained many concepts.