What would happen if Jupiter suddenly replaced the moon ?

I'm guessing we would all agree that having Jupiter this near the sun with us in orbit around Jupiter would still be deadly, given the tidal forces and radiation.

Ocean life may be an exception, though, if they think Europa could harbour life under its icy canopy. It must be subject to that massive radiation field same as we would be.. So, earth may not do well with land life in that situation, but the oceans would probably be another matter.

 

We would have to rewrite Hey Diddle Diddle

 

Not at all. No object orbits another object, and no object is itself a center of gravity for an orbiting relationship.

Rather, two objects can orbit each other, with the center of orbit placed in between them, scaled closer to the more massive object of course. Even the planet exerts a gravitational force on the star it orbits.. A little tug. In fact this wobble effect of a star is how we can detect extrasolar planets.

 

If you placed Jupiter 238,900 miles from Earth I am certain it would be well within Roche's Limit. (I will leave the calculation of the actual distance for your entertainment, the formula is in the article). The moon would split in half, then the halves would split and this process would continue until Jupiter had another ring, (it has several now, just like Saturn but invisible except to satellites) probably an insignificant one too thin to be seen from the Earth, which would no longer be there anyway.

If you want to visualise something possible think of what the Moon must have looked like when it was first formed. It was, at one time, a mere 11,000 miles away and if there was water on the Earth tides over a mile high swept around the oceans (though I believe the surface was molten at the time)

 

Facts about the Jupiter Juno mission...

3-2-1: A look at NASA's Jupiter mission by the numbers
July 3, 2016 — Since launching in 2011, NASA's Juno spacecraft has been cruising toward the biggest planet in the solar system. On Monday, Juno is scheduled to perform a nail-biting move designed to enter orbit around Jupiter to explore its cloud-covered atmosphere and interior makeup.

 

Juno ready to go into obit around Jupiter...

NASA's Juno spacecraft ready for one-shot try to orbit Jupiter
July 4, 2016 - A NASA spacecraft was poised for a one-shot attempt to slip into Jupiter's orbit on Monday for the start of a 20-month-long dance around the solar system's largest planet to learn how and where it formed.

 

Gravitational forces would destroy the Earth and likely turn it into a ring.

 

The high tides would be the least of your worries due to jupiter's tidal forces. The tidal friction due to the differential pull would create so much heat, the Earth would be consumed by volcanic activity. The Earth would be outside the Roche limit, but we wouldn't survive.

 

Earth would go bye bye for good.

Nice bit of photoshopping by the way OP.

 

We would all die! LOL!!

Take a pick....whether the massive amount of radiation streaming off of Jupiter did not fry you or if instead the collision of Jupiter into the Earth due to the gravitation would do it first!!

AA

 

What would happen if Jupiter suddenly replaced the moon ?

Prob'ly depends on what the mass of Jupiter is...

... if equal to or less than the moon, not much...

... if more than earth, we could be seein' some mighty high tides.

Isn't Jupiter a gaseous giant?

 

We already know the mass of Jupiter, ~318 times the mass of Earth.

http://nssdc.gsfc.nasa.gov/planetary/factsheet/jupiterfact.html

 

Yes but Jupiter's mass is many many times that of Earth.

Mass…Jupiter has a mass of 1.8981 x 1027 kg. That is over 317 times the mass of Earth. Volume…Jupiter's volume is 1.43128 x 1015 km3. That is 1,321 times Earth's volume.

AA