Russia to fire missile at asteroid...

[Derek Willis]

According to Wikipedia, which is often correct, the Earth's surface receives 173,000 terawatts from the Sun, but only 47 terawatts from the interior. That means we get 3,700 times more energy from the Sun than from the interior.

https://en.wikipedia.org/wiki/Earth%27s_internal_heat_budget

[SHaYap]

What I'm uncomfortable with in regards to this sort of Nuclear Intervention option ~ there is still that question of what happens when one that is projected to hit, say the Kremlin but due to intervention ends up hitting London or Shanghai or Manhattan ?

~ Or even crashing into the oceans creating a 300 foot Tsunami inundating Florida or Madagascar or Brisbane ... Ooopsie ?

`

[TOG]

"Oh, sorry! We miscalculated just enough to send that asteroid right into the White House. What a terrible mistake!"

That is probably the future of weapons. Just slap a set of high efficiency thrusters onto a NEA NEO and gently nudge it onto your enemies cities. It would take some pretty skilled detective work to find who was responsible.

(Edit to change "NEA" to the less ambiguous "NEO" for "Near Earth OBJECT" vice "Near Earth ASTEROID" Although you probably could slap thrusters onto the National Endowment for the Arts as well, because, you know... art!)

Edited March 23, 2016 by TOG

[JesseCuster]

no, because the sun's atmo is about as thin as the moon's. the atmos of all of the planets and trwo moons is thick enough to heat up from the suns radiation. hoiw ever all but venus get most of their heat from their coires.

Um, you're actually agreeing with me (despite the errors Waspie has pointed out). You just agreed that the sun's radiation on its own, is enough to make something heat up. Hence the astronaut in our scenario would be fried to a crisp close enough to the sun because the intensity of the sun's radiation, even if the sun's atmosphere wasn't thick enough to do the same thing.

What planetary cores have to do with anything, I'm not sure. The astronaut in our scenario would also be generating heat from his interior, but what does that have to do with anything?

[DingoLingo]

and yet if you are dropped into the atmosphere of the sun you will freeze to death befor the vacuum can do it. this because the atmosphere is thin. and yes the atmosphere is around 10,000 degrees.

radiation has to have something to bounce off of to give off its heat.

yea, but thex radeation has something to bounce off of the ground. it is also the second col;dest place in system. if its day was faster it would be colder. also it isn't inside the suns atmo.

i did not say more heat i said heat. (actually you did)

Earth may have formed more than 4.5 billion years ago, but it’s still cooling. A new study reveals that only about half of our planet’s internal heat stems from natural radioactivity. The rest is primordial heat left over from when Earth first coalesced from a hot ball of gas, dust, and other material.The new finding comes from experiments carried out deep inside a Japanese mountain. Itaru

Shimizu, a particle physicist at Tohoku University in Sendai, Japan, and his colleagues used geoneutrinos—particles produced in a variety of ways, particularly during certain types of radioactive decay—to more directly estimate the amount of radiogenic heat produced inside Earth.

http://rashidfaridi....s-it-come-from/

the suns l;ight is more needed for plant life than heat.

earths core generates most of the heat that the earth has. this does not main earth generates more heat than it receives. the suns light is needed for plant life. the heat we animal life use to keep warm comes from the earths core.