Astronomy View

  As a child or adult, one question that have definitely aroused in everyone's mind is  "Is this universe infinite or it has some boundaries?" as a science or  astronomy student this might be the first question to arouse in students mind.  Coming back to the answer of this beautiful question- The observable universe is still huge but it has limits. This is because we know that the universe isn't infinitely old - we know that the big bang occured some 13.8 billion years ago. So from this we can conclude that the light has had only 13.8 billion years to travel and hence defines the limitations of universe. All we know or scientists believe is that universe is still far above  from our observable distance but at some point it has limits for sure.

  We all know that water is abundant in   space and is made up of hydrogen created in the Big Bang and oxygen released from dying stars. According to studies planets of our solar system were created around 4.60 billion years ago from clumps of rocks spinning around the Sun. Earth was  moulded from rocks that came from the inner solar system where the fierce heat of the sun would have boiled away the water. So, the water would have come later. But according to many geochemical studies or theories have concluded that asteroids are most likely the primary source of Earth's water. Carbonaceous chondrites –which are a subclass of the oldest meteorites in the Solar System–have isotopic levels most similar to ocean water.

It was the time of 1920, astronomer Edwin Hubble discovered that the universe is not static but rather it is expanding. Now in 1998, the Hubble space telescope (which was named for the astronomer), studied supernovas and found that the universe was expanding more slowly long time ago compared to the pace of its expansion today. Now this  puzzled many scientists, who thought the gravity would gradually slow the expansion of universe or eventually cause it to contract. So this discovery or the explanation of the universe's accelerated expansion led to the hotly debated concept of dark energy,  which is thought to be the force that is pulling the cosmos apart at ever increasing speeds. While this dark energy is thought to make up approximately 73 percent of the universe, the force remains elusive and is yet to be directly detected. Science staff writer Adrian Cho wrote. "Dark energy may never reveal its nature, Still scientists remain optimistic that nature will cooperate and tha

Nova is completely a new term for the beginners in the field of astronomical science. People  usually call it as 'new star', but in actual nova is a transient astronomical event in which a   sudden appearance of bright, appearantly new star takes place that slowly fades with time  (usually several weeks or months). Nova has mainly 3 sub classes- classical nova      recurrent nova dwarf nova Classical nova eruptions are the most common types of nova. The sudden rise or increase in the energy expels the atmosphere into interstellar space  creating the envelope seen as visible light during the nova event. however they can be seen  or appearing anywhere in the sky. Most  of the nova are found telescopically, nearly one in every 1-2 year can be seen with  naked eye visibility.

As a beginners in field of machine learning and data science must be unaware of KIRA, so first question in your mind would be "what is KIRA?". so here is the answer to your question.

The color black usually signals the absence of light. But inside the solar system, space is filled with light. So what is the real reason behind the black colour or you can say darkness of the outer space. Your question, which seems simple, is actually very difficult to answer. There are two things to think about here. Let's take the easy one first and ask "why is the daytime sky blue here on Earth?" That is a question we can answer. The daytime sky is blue because light from the nearby Sun hits molecules in the Earth's atmosphere and scatters off in all directions. The blue color of the sky is a result of this scattering process. At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered. If you were on the Moon, which has no atmosphere, the sky would be black both night and day. You can see this in photographs taken during the Apollo Moon la