For me,it's the expansion of the universe(into what is it expanding?)and how it might end,by a big crunch or big freeze?
nd what about you? 👀
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5 sats \ 1 reply \ @alt 4h
How to describe gravity with a single theory that gives repeatable predictions, that is consistent with both general relativity and with quantum mechanics. This to me is the biggest unanswered physics problem of our age, and whoever answers it will be on a par with Einstein.
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0 sats \ 0 replies \ @Imyourfed OP 4h
Interesting
Do you think we could get an answer for this in next few decades?
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5 sats \ 2 replies \ @fm 5h
water..
Science cant really fully explain it
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0 sats \ 1 reply \ @Imyourfed OP 4h
Really?
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0 sats \ 0 replies \ @fm 4h
pretty much..
Its deeper than this but this comment sums up one of the answered questions:
Water is unusual because its molecules move further apart when it freezes. The molecules of just about every other substance move closer together when they freeze
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0 sats \ 0 replies \ @7e6e393a56 3h
"How did life come about?"
For many scientists, the primordial soup theory in which chemical processes from the ocean mixed with gases from the atmosphere and energy from lightning may be the best theory to explain how life arose on Earth.
But it is not universally accepted nor is it the only one.
In fact, there is no agreement about life or where it began.
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