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Is the universe infinite??

  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.
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What is the truth behind the black hole existence?

A black hole is a region of spacetime exhibiting gravitational acceleration so strong that nothing—no particles or even electromagnetic radiation such as light—canescape from it. The theory of general relativity predicts that a sufficiently compact mass candeform spacetime to form a black hole.

Don't let the name fool you: a black hole is anything but empty space. Rather, it is a great amount of matter packed into a very small area - think of a star ten times more massive than the Sun squeezed into a sphere approximately the diameter of New York City. The result is a gravitational field so strong that nothing, not even light, can escape. 
In recent years, NASA instruments have painted a new picture of these strange objects that are, to many, the most fascinating objects in space. For any further questions, do mention in the comments box below.

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Is the universe infinite??

  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.
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What was the reason behind the death of kalpana chawla(Astronaut)??

Introduction Kalpana Chawla was an American astronaut, engineer, and the first woman of Indian descent to go to space. She first flew on Space Shuttle Columbia in 1997 as a mission specialist and primary robotic arm operator. She was very brilliant in his works, she also won the various medals in field of astronomy and robotics. Cause of her death US space shuttle Columbia disintegrated shortly before landing on Saturday morning, killing the seven crew members on board, including Indian-American Kalpana Chawla. Witnesses in and near Waco and Dallas, Texas, reported seeing the space shuttle breaking up around 8 am local time, about 16 minutes before its scheduled landing at Cape Caneveral, Florida. Local cameramen captured several vapour trails in a clear blue sky as the shuttle broke up. Columbia was returning to earth after a 16-day mission and was commanded by Texan Rick Husband, who was on his second mission. It was also the second mission for Karnal, Haryana-bor...
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KIRA in Big Data technology

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.
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