Yes, it’s fun to think about them September 15, 2018
Posted by hslu in Science.Tags: Big bang, conformal cyclic cosmology
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One multiple choices question for you to ponder when you aren’t out there making a living:
- Big bang didn’t happen,
- There is only one universe after a big bang and we are in it now,
- There were many big bangs before the one which created our universe,
- There will be many more big bangs after the one we’re in right now,
- There are endless big bangs and endless universes.
What Would Happen If Time is Stopped? September 10, 2018
Posted by hslu in Science.Tags: Science, time
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Interesting read.
When time stops, nothing happens. Nothing is moving and even our brain cells stop functioning.
You will stay young forever but you won’t notice any difference.
Dark force, dark matter and dark energy September 4, 2018
Posted by hslu in Science.Tags: Dark energy, dark force, Dark Matter
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May the dark force be with you!
Hope you can see light at the end of a long dark tunnel after searching in the dark for so long.
Nothing August 22, 2018
Posted by hslu in Science.Tags: atom, Space, Universe
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Source: Flipboard
The “empty” space in the universe is not the same as nothing as we know it. The average density of space is about one atom in every ten cubic meters.
It is very empty but it is nothing.
Times are legion May 19, 2018
Posted by hslu in Knowledge, Science.Tags: Rovelli, time
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Huh?
This physicist’s ideas of time will blow your mind.
Source: Flipboard
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It blew mine.
Time, according to Rovelli, doesn’t exist if human beings aren’t there to experience it.
Rovelli suggeststhat “what we experience as time’s passage is a mental process happening in the space between memory and anticipation.”
How do you like that for an explanation of “time”?
Read it. You’ll like it.
Planet Vulcan, dark matter and dark energy May 7, 2018
Posted by hslu in Knowledge, Science.Tags: Dark energy, Dark Matter, general relativity
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Troubled Times for Alternatives to Einstein’s Theory of Gravity
Interesting article about how alternative gravity theories to Einstein’s general relativity die because an event billions of light year away which has been predicted by theory has reached the earth and recorded by devices developed for that particular event.
Well, killing off old theories and replacing them with new ones is how science has worked in the past and it will be the way how science can stand up to the test of time in the future.
May be one of these days, human can travel at a speed close to the speed of light and boldly go where no one has gone before.
But, I doubt it that these future space travelers will ever meet any alien at all.
天書 May 3, 2018
Posted by hslu in Knowledge, Science.Tags: Hawkins, Universe
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雖然是天書，讀起來還是很有意思。
有時候沒事，靜下來想想這個世界，這個宇宙， big bang 和 big bang 以前是怎麼來的也相當有趣。雖然這幾個問題在目前不可能有答案，偶爾看看天書，讓雜亂的心暫時遠離一下”柴米油鹽醬醋茶”和這個世界的亂像，讓腦筋轉一轉，動一動，心裏靜一靜對我的心身都有一點好處。
神，佛，菩薩，上蒼，天堂，地獄和輪迴是人編出來的，這是信仰的領域。這是幾千年以來人類受苦受難以後想出來的虛擬世界來安慰自己的。這跟人死了以後去那裏一樣，都沒有辦法經過科學的實驗來證實的。
我們這個神奇的宇宙是怎麼來的，在最近的將來也沒有辦法經過科學來證實。這就需要像 Einstien， Hawking 和 Hertog 這些聰明人來想辦法了。
Entanglement is weird enough. Entangled time? April 15, 2018
Posted by hslu in Knowledge, Science.Tags: entangled time, Entanglement
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If You Thought Quantum Mechanics Was Weird, Check Out Entangled Time
An enjoyable read and a weird concept very difficult to wrap my brain around it.
Beautiful: The Entire Known Universe in a Single Image January 17, 2018
Posted by hslu in Knowledge, Science.Tags: Laniakea, Milkway, Solar System, Universe
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This Is What The Entire Known Universe Looks Like in a Single Image
