/u/askingquestions4u's posts in /r/askscience

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When a doctor says to a patient that they have 6 months to live, how do they know?

1609 upvotes

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What is the evolutionary lineage of insects? We only ever head about the 1st fish that came onto land that evolved into most animals.

429 upvotes

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How did the sun get to be made primarily out of Hydrogen, while the planets are not?

121 upvotes

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Why doesn't blood clot in a needle when donating blood?

2 upvotes

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How does electrical energy turn into mechanical energy? For example, how does electricity go into a fan and it move?

1 upvotes

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How can a car's breaks work if the engine is still running without either the engine breaking or the break pads wearing down?

1 upvotes

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How can something (the universe prior to the big bang) have infinite mass?

1 upvotes

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Why can't liquid water exist on a planet with no atmosphere?

1 upvotes

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Why are good looking girls intimidating?

1 upvotes

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Does smelling a smell dilute it?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When a doctor says to a patient that they have 6 months to live, how do they know?	1609
What is the evolutionary lineage of insects? We only ever head about the 1st fish that came onto land that evolved into most animals.	429
How did the sun get to be made primarily out of Hydrogen, while the planets are not?	121
Why doesn't blood clot in a needle when donating blood?	2
How does electrical energy turn into mechanical energy? For example, how does electricity go into a fan and it move?	1
How can a car's breaks work if the engine is still running without either the engine breaking or the break pads wearing down?	1
How can something (the universe prior to the big bang) have infinite mass?	1
Why can't liquid water exist on a planet with no atmosphere?	1
Why are good looking girls intimidating?	1
Does smelling a smell dilute it?	1