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

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When a rocket lifts off, is the entire weight borne by the nozzle assembly?

2727 upvotes

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Since the Moon has a negligible atmosphere, why hasn't it's water ice been lost to sublimation?

28 upvotes

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How much does gravity affect moving objects at extremely short distances?

14 upvotes

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If I am riding in a bus traveling 60 mph, and I throw a ball 30 mph from the front the bus to the back of the bus, what exactly is happening? Is the ball moving, or is the bus accelerating away from the ball at 30 mph?

10 upvotes

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Why do non-sentient animals dream?

1 upvotes

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If the Sun were to remain in its current state indefinitely, how long would the Earth retain its molten core?

1 upvotes

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When magma reaches the Earth's surface and flows out as lava, has it been molten since the formation of the planet?

1 upvotes

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Why are there not more natural oil spills due to the action of plate tectonics?

1 upvotes

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What is the oldest ancestor of Homo sapiens that could function genetically as a mate (of Homo sapiens)? How would the resulting offspring be classified?

1 upvotes

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Why does my Photic Sneeze Reflex cause me to sneeze 4 times?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When a rocket lifts off, is the entire weight borne by the nozzle assembly?	2727
Since the Moon has a negligible atmosphere, why hasn't it's water ice been lost to sublimation?	28
How much does gravity affect moving objects at extremely short distances?	14
If I am riding in a bus traveling 60 mph, and I throw a ball 30 mph from the front the bus to the back of the bus, what exactly is happening? Is the ball moving, or is the bus accelerating away from the ball at 30 mph?	10
Why do non-sentient animals dream?	1
If the Sun were to remain in its current state indefinitely, how long would the Earth retain its molten core?	1
When magma reaches the Earth's surface and flows out as lava, has it been molten since the formation of the planet?	1
Why are there not more natural oil spills due to the action of plate tectonics?	1
What is the oldest ancestor of Homo sapiens that could function genetically as a mate (of Homo sapiens)? How would the resulting offspring be classified?	1
Why does my Photic Sneeze Reflex cause me to sneeze 4 times?	1