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Abdulboriy posted in the group Quotes
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What would happen if a coin-sized black hole appeared on Earth?
In general, it would take five billion years for such a black hole to swallow the Earth. It could significantly increase the mass of the Earth.
And, of course, it would immediately create a total mess on the planet, turning it into an uninhabited space scrap of collapsing…Read More
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Hints, how to grow profile at FriendSpace | from Founder of FriendSpace:
1. Request friendship first! (That way you can have more connections)
2. Use hashtags on your posts! (If you use hashtags or create hashtags, FriendSpace will feature you to everyone)
3. Share your profile in other platforms like Telegram, Instagram (If you share…Read More
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Abdulloh posted in the group ●Astro ■|■Space ●hole
What was there before the Big Bang? This question fascinates many and puzzles all. For the physicist, any attempt to answer it collides head on with the fact that our current theories simply do not apply. Indeed, our physical laws cannot go back infinitely in time: they stopped at “Planck time,” 10−43 s after the Big Bang. This is the smallest duration of time that quantum physics allows to describe. This Planck limit can be viewed as an absolute barrier, impossible to penetrate. The Universe is explainable with our physical laws only after this instant. To search what was before Planck time is like searching for a period before time itself existed, or looking for space outside space. Neither time nor space existed before the Big Bang. Moreover, our physics is unable to describe phenomena of temperature greater than 1032 K (limit called “Planck temperature”). At these enormous energies, quantum and relativistic effects start to interplay and cloud the issue. Even the concepts of space and time lose their meaning. Any calculation done within the framework of current theories remains impossible. Still, we can persist in asking: what was there before? We do not have (yet) the tools to answer. We can only speculate, using string theory to bypass the issue and to push back the limits. Our Universe would be only one of the realizations of a vast cosmic landscape covered with a multitude of disjointed universes, each with its own space-time. This “multiverse” or “megaverse,” in the words of Leonard Susskind, one of the creators of string theory, is eternal and had no beginning. It was from this unimaginably vast and eternal generative landscape that our own Universe was born. It would be unique by its physical laws, each universe having its own set of “fundamental constants,” with values very different from ours.
Is Big Bang perfect for understanding the beginning of universe -
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How to choose a field to work and study?
Choosing a field to pursue, whether it’s for education or a career, is a crucial decision and it involves several steps to ensure that the choice aligns well with your interests, skills, and long-term goals. Here are some steps and considerations to help you make an informed decision:
Think about…Read More
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All systems are looking good for tomorrow’s Falcon 9 launch of Polaris Dawn. Webcast will go live ~3.5 hours ahead of liftoff on Tuesday, August 27
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Leaders are not responsible for the result. Leaders are responsible for the people who are responsible for the result.
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