Moon formation: Was it a ’hit and run’ accident?
2012-08-01 0:00

From: BBCNews

Scientists have proposed a fresh idea in the long-running debate about how the Moon was formed.

What is certain is that some sort of impact from another body freed material from the young Earth and the resulting debris coalesced into today’s Moon.

But the exact details of the impactor’s size and speed have remained debatable.


Computer simulations suggest a large, fast-moving body impacted the Earth to create the Moon


In a report online to be published in Icarus, researchers suggest that the crash happened with a much larger, faster body than previously thought.

Such theories need to line up with what we know about the Moon, about the violent processes that set off the creation of moons, and what computer simulations show about the more sedate gravitational "gathering-up" that finishes the job.

In recent years, scientists’ best guess for how the Moon formed has been that a relatively slowly moving, Mars-sized body called Theia crashed into the very young Earth.

That would have heated both of them up and released a vast cloud of molten material, much of which cooled and clumped together to give rise to the Moon.

That would suggest that the Moon is made up of material from both the early Earth and from Theia, which should be somewhat different from one another.


[...]


Read the full article at: bbc.co.uk





Related Articles
Apollo Moon flags still standing says NASA
NASA | Tour of the Moon
Neil Armstrong breaks his silence to give accountants "moon exclusive"
London 2012: Olympic Stadium is officially opened ("Supermoon" night)
Wonders of sun, moon and sky
Moon Oddly Magnetic—Giant Asteroid Crash to Blame?
Spacecraft Footage: The Far Side Of The Moon (Video)


Latest News from our Front Page

Estonia must accept African & Middle Eastern immigrants says politician
2015-05-22 3:06
Kalle Laanet, an Estonian politician, spoke at the International Migration Forum held in Tallinn. He told the audience that the question is not: Should Estonia take the African and the Middle Eastern immigrants (who illegally entered Southern Europe)? He said the question is: How will Estonia take the immigrants? “Today the issue is not whether Estonia should receive the refugees coming to ...
Rescuing Palmyra: History's lesson in how to save artefacts
2015-05-21 22:49
With Islamic State militants now inside the historic town of Palmyra in Syria, the question, inevitably, is whether they will destroy the ancient ruins. As IS continues to sweep through parts of Iraq and Syria, damage to centuries-old artefacts - because IS sees statues and shrines as idolatrous - is plentiful. But history has shown that, when culturally important sites are under ...
Saudi Arabia Wants to Convert Sweden to Islam
2015-05-21 20:38
Aje Carlbom is an Associate Professor of Social Anthropology, University of Malmö Since the 1970s, Saudi Arabia has actively spread its interpretation of Islam, Wahhabism or Salafism, worldwide. It is the most literal version of Islam and affects many young Muslims, who regard society as a place to Islamize, writes social anthropologist Aje Carlbom. Sweden's Foreign Minister Margot Wallström was ...
Professor: If You Read To Your Kids, You're 'Unfairly Disadvantaging' Others
2015-05-21 18:22
Bedtime-story privilege? According to a professor at the University of Warwick in England, parents who read to their kids should be thinking about how they're "unfairly disadvantaging other people's children" by doing so. In an interview with ABC Radio last week, philosopher and professor Adam Swift said that since "bedtime stories activities . . . do indeed foster and produce . . ...
If You Read About Conspiracies You're Just Like Osama Bin Laden Apparently
2015-05-21 3:46
At its heart, the story of Osama bin Laden's time at his house in Abbottabad is surreal. The American image of bin Laden - leering at us from under his head wrap as he plots and schemes - is undermined by the mundane realities of his life. The guy was responsible for murdering thousands of Americans and orchestrating a global ...
More News »