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Our Universe Video Lecture - Class 6
FAQs on Our Universe Video Lecture - Class 6
| 1. What is the universe? |  |
Ans. The universe refers to all space, matter, energy, and time that exists. It includes everything from the smallest subatomic particles to the largest galaxies and beyond.
| 2. How old is our universe? | |
Ans. The current scientific estimate suggests that the universe is approximately 13.8 billion years old. This age is calculated based on various observations and measurements, such as the cosmic microwave background radiation.
| 3. What is the Big Bang theory? | |
Ans. The Big Bang theory is the prevailing scientific explanation for the origin and evolution of the universe. It suggests that the universe began from an extremely hot and dense state, and has been expanding and cooling ever since.
| 4. Are there other universes besides our own? | |
Ans. The existence of other universes, also known as a multiverse, is a topic of speculation and ongoing scientific research. While there are various theoretical models that propose the existence of multiple universes, there is currently no concrete evidence to confirm their existence.
| 5. Can we ever travel to other galaxies? | |
Ans. Currently, the vast distances between galaxies make intergalactic travel impractical with our current technology. The nearest galaxy to our Milky Way, Andromeda, is about 2.5 million light-years away. However, scientists are constantly exploring new technologies and possibilities for future space exploration.
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Jul 14, 2025
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