Earth, Moon And Mars Linked?

[Argonauts]

science once said that the Earth was scrape by mars and the moon came from Mars debris. But now Science says that the moon was part of Earth

 

http://gizmodo.com/we-were-wrong-about-where-the-moon-came-from-1786527147?utm_campaign=socialflow_gizmodo_facebook&utm_source=gizmodo_facebook&utm_medium=socialflow

 

According to that article. Is it possible that with all the Asteroids flying around and Meteorite coming by could the Earth have been a giant planet and then a big asteroid or a Flying burning Meteorite hit the Earth with such Impact that the earth shattered into fragments then reformed into the Earth Moon and Mars. I admit I am not that smart but according to that article the Earth and the Moon were 1 which make the earth bigger back then but with Mars soo close to us and it being really violent in the Universe back then could it have been possible. The 1 thing I know is that the robots on Mars can only do soo much as to on Earth we can do much much more. I welcome any input

[A-wal]

The moon is large larger than any other moon in the solar system in relation to its parent planet. It's more of a binary system than one orbiting the other, we both orbit around the centre of gravity that's one sixth of the way towards the moon from us. Some people think that the moon should be concidered a planet in its own right.

 

The moon forming from the Earth is the standard view due to a collision with another body (Thea) that collided with protoearth. According to that theory the Earth would have been smaller back then and it's crust now it mostly composed of what was Thea and so is the moon.

 

I've never heard of Mars being formed from that collision. If it was then it might be accurate to think that Thea was actually Mars. Interesting.

[Turtle]

science once said that the Earth was scrape by mars and the moon came from Mars debris. But now Science says that the moon was part of Earth

 

http://gizmodo.com/we-were-wrong-about-where-the-moon-came-from-1786527147?utm_campaign=socialflow_gizmodo_facebook&utm_source=gizmodo_facebook&utm_medium=socialflow

 

According to that article. ...

No; you misread the article. What they write/say is "Mars-sized body", not the planet Mars. I also take issue with your term 'scrape' and the article's term 'grazed' as the impact theory(s) simply have proposed an off-center impact.

 

Following a link from your initial article I find a quote that nicely summarizes the new work.

We've Found Traces Of The Massive Impact That Created The Moon 

 

...This work is the first to claim to see such a difference in the isotopes of oxygen, and thus it may provide an important new constraint on the giant impact models, specifically on the size and composition of Theia," planetary scientist Robin Canup, with the Southwest Research Institute in Boulder, Colo., told Discovery News. ...

So again, the Earth/Moon impact formation hypotheses do not involve the planet Mars.

Edited September 14, 2016 by Turtle

[A-wal]

That's a shame. Mars has two vastly different hemispheres, one smooth and lower, the other more irregular and covered in boulders. It's a big mystery and this would be a decent explanation.

[Turtle]

That's a shame. Mars has two vastly different hemispheres, one smooth and lower, the other more irregular and covered in boulders. It's a big mystery and this would be a decent explanation.

Well, there is a decent explanation.

 

Cataclysmic impact created the north-south divide on Mars

...Scientists have long puzzled over this "Martian dichotomy", but research published today points to a violent explanation for the contrasting landscapes. Early in its history, Mars was struck by a massive asteroid that changed the face of the planet forever.

 

Writing in the journal Nature, three groups of scientists describe how four billion years ago, soon after the formation of the solar system, an asteroid between a half and two thirds the size of the moon struck the planet at an angle of 30 to 60 degrees.

 

The impact unleashed an explosion equivalent to 100bn gigatonnes of TNT and created a scar 10,600km long and 8,500km across, the largest impact crater known anywhere in the solar system. The crater, a giant basin that covers 42% of the planet's surface, is roughly the size of Europe, Asia and Australia combined. ...

Now read carefully! The article says an object 'between a half and two thirds the size of the moon' struck Mars, not that the Moon struck Mars. :rolleyes:

[Turtle]

Moreover, the conjectured impact may be responsible for Mars' moons, just as with the conjectured Earth/Theia impact.

 

Mars Moon Mystery

...Despite the look of Phobos and Deimos, some astronomers have suggested that perhaps these tiny orbs formed in a similar way around Mars. Well, it turns out that they might be at least partially right.

 

As mentioned above, the composition of Phobos is unlike anything found in the Asteroid Belt. So it if was a captured asteroid, it seems that it would have have an origin other than the belt.

 

Perhaps the best evidence so far gathered is the presence of a mineral called phyllosilicates on the surface of Phobos. This mineral is very common on the surface of Mars, an indication that Phobos formed from the Martian substrate. Beyond the presence of the phyllosilicates, the general mineral composition of both surfaces are in agreement.

 

But the composition argument isn't the only indication that Phobos and Deimos may have originated from Mars itself. There is also the question of orbit.

 

The near-circular orbits of the two moons are very near to Mars' equator, a fact which is difficult to reconcile in the capture theory. However, a collision and re-accretion from a planetary ring of debris could explain the orbits of the two moons. ...

[A-wal]

That's all well and good but it's just not as exiting. :)