New Theory "The Big Splat": Earth Had Two Moons?
2011 08 04

By Michael D. Lemonick | Time.com


Earth must have felt pretty inadequate a week or two ago when astronomers announced that distant Pluto has yet another moon. Pluto! Recently demoted to a dwarf planet! And yet it boosted its satellite total to four, while we remain forever stuck at one. True, Earth is ahead of Mercury and Venus, which have no moons at all. But Mars, which is significantly smaller than Earth, has two; and don’t even mention Jupiter, with more than 60; or Saturn, with 53. Even asteroids have multiple moons — including Sylvia, a 384-mile (617 km) space rock that boasts the twin satellites Romulus and Remus.

But Earth’s rep may might gotten a bump, thanks to a paper just published in the journal Nature. Our home planet may have just one lonely moon now, but long ago, like Mars and Sylvia, we had two. "Whether it’s right or not, I don’t know," says Maria Zuber, a planetary scientist at MIT who wrote an opinion piece accompanying the new study. "But I think it’s very plausible."


This diagram provided by Martin Jutzi and Erik Asphaug, University of California, Santa Cruz via Nature shows a simulation of four stages of a collision between the Moon and a companion moon, four percent of the lunar mass, about 4 billion years ago. Earth once had a second moon, until it made the fatal mistake of smacking its big sister, some astronomers now theorize. For awhile when the Earth was young, it had a big moon, the one you see now, and a smaller "companion moon" orbiting above. Then one day that smaller moon collided into the bigger one in what astronomers are calling the "big splat." (AP Photo/Martin Jutzi and Erik Asphaug, University of California, Santa Cruz via Nature)

The idea, cooked up by astronomers Martin Jutzi and Erik Asphaug, of the University of California at Santa Cruz, started out as an attempt to explain why our moon has so asymmetrical a surface. The part that faces us is relatively smooth, with vast expanses of ancient lava forming flat, dark, low-lying plains that earlier astronomers mistook for oceans. But when space probes first circled the moon in the early 1960s, scientists learned that the far side is mostly covered with rugged mountains and craters.


This artist’s rendering provided by Martin Jutzi and Erik Asphaug, University of California, Santa Cruz via Nature shows a simulation of a collision between the Moon and a companion moon, four percent of the lunar mass, about 4 billion years ago. Earth once had a second moon, until it made the fatal mistake of smacking its big sister, some astronomers now theorize. For awhile when the Earth was young, it had a big moon, the one you see now, and a smaller "companion moon" orbiting above. Then one day that smaller moon collided into the bigger one in what astronomers are calling the "big splat." (AP Photo/Martin Jutzi and Erik Asphaug, University of California, Santa Cruz via Nature)

Nobody has ever been able to explain with certainty why the moon should be so lopsided: maybe it had to do with some kind of massive impact that violently rearranged the surface, much like what happened to the asteroid Vesta. Maybe it was a slightly off-center core that caused the crust to be thinner on the Earth-facing half of the moon, which made that hemisphere more susceptible to lava bleeds.

But then Jutzi and Asphaug began thinking. "It looked to us a little bit as though the highlands on the far side accreted" — which is to say, they were added on top of the pre-existing surface. The astronomers thought a bit more, and realized that this idea was consistent with scientists’ beliefs about how the moon formed in the first place. Thanks to the analysis of moon rocks that were brought back by the Apollo missions, planetary scientists are pretty sure that our satellite was born billions of years ago when a Mars-size planetoid smashed into the young Earth.


The impact blasted off a cloud of debris from both of the objects and sent it spinning into space, where it eventually congealed into the moon. There could have been other, smaller pieces as well, says Zuber, but their orbits would have been unstable, causing them either to be flung away or to fall into Earth or the moon pretty much immediately.

Except, that is, if they happened to end up at a Trojan point — a place in the same orbit as the moon, but either well ahead of or well behind it, that’s gravitationally stable — or relatively so anyway. Just last week, astronomers announced the discovery of a Trojan asteroid leading the planet Earth around the sun. There’s no reason a Trojan moon couldn’t lead or follow our moon around the Earth.

Read the full article at: time.com




Trojan Asteroid: Like a poodle on a leash, tiny asteroid runs ahead of Earth in orbit of sun
By Malcolm Ritter | YahooNews.ca / AP

Like a poodle on a leash, a tiny asteroid runs ahead of Earth on the planet’s yearlong strolls around the sun, scientists report.

The discovery of this companion, which measures only about 300 metres across, makes Earth the fourth planet in the solar system that’s known to share its orbit with an asteroid.

Imagine Earth and the asteroid travelling around a clock face, with the sun in the middle. Generally, the asteroid runs about two numbers ahead.
However, the asteroid sometimes ranges so far ahead that it’s on the opposite side of the sun from Earth, said Martin Connors of Canada’s Athabasca University in Alberta. He reports the work with colleagues in Thursday’s issue of the journal Nature.

Asteroids are giant space rocks that orbit the sun, and ones that share an orbit with a planet are called Trojans. Scientists had previously found a few for Mars and Neptune and nearly 5,000 for Jupiter. Spotting one in Earth’s orbit is difficult from the ground because the potential locations are generally in the daytime sky.

The newfound object, called 2010 TK7, was discovered last year by NASA’s WISE satellite. Connors and colleagues were able to focus a ground-based telescope in Hawaii on it in April, determining its orbit with enough precision to show it was a Trojan.

Donald K. Yeomans, manager of NASA’s Near-Earth Object Program Office, who didn’t participate in the discovery, agreed that the asteroid is a Trojan. Most scientists suspected Earth had them, he said, and "I would guess there’s others."


Video from: YouTube.com




Video from: YouTube.com



Also tune into:

David Icke - The Cosmic Firewall & The Moon Matrix

David Icke - The Moon and Saturn Matrix

Richard C. Hoagland - Phobos an Ancient Alien Spaceship, Mars, NASA & Disclosure

Mike Bara - Dark Mission, The Occult NASA Moon Mission

Wallace Thornhill - The Electric Universe

Wallace Thornhill - Proto-Saturn, The Purple Dawn of Creation & Our Strange Solar System

Alan Watt - Moon Landing, UFO’s & Fake Alien Threat

Ted Twietmeyer - The Moon & Sun, Time & UFO’s

Richard C. Hoagland - Comet Elenin as a Time Capsule, Norway Attack & The Messengers of Horus

Andy Lloyd - Comet Elenin, Nibiru & Planet X







Related Articles
Earth’s two moons? It’s not lunacy, but new theory
David Icke - The TRUTH about the MOON (Video)
Believers In Mysterious Planet Nibiru Await Earth’s End
Is Google Censoring Nibiru Planet X?
Huge New Planet (Brown Dwarf?) Discovered in Our Solar System - Tyche Echoes of Planet X or "Nibiru"
ELEnin Dwarf Star Warning September 26, 2011
Mysterious changes seen on distant dwarf planet
Life could thrive on planets with two suns, but the plants would be black
Two Suns? Twin Stars Could Be Visible From Earth By 2012
M9.3 Class Solar Flare / Solar Watch Aug 4, 2011


Latest News from our Front Page

Norway Joins the Race to Develop Killer Robots
2014 10 24
Norway is a large exporter of weapons, which makes the resolution of the debate about creating killer robots an important issue for everyone.  One could debate the overall merits or failings of robotic systems, but an area that clearly has become a point for concern on all sides is the emergence of "killer robots." According to robotics pioneer, David Hanson, ...
Gene That Once Aided Survival in the Arctic Found to Have Negative Impact on Health Today
2014 10 23
In individuals living in the Arctic, researchers have discovered a gene variant that arose thousands of years ago and most likely provided an evolutionary advantage for processing high-fat diets or for surviving in a cold environment; however, the variant also seems to increase the risk of hypoglycemia, or low blood sugar, and infant mortality in today’s northern populations. {snip} “Our work ...
The Ebola hoax: questions, answers, and the false belief in the “One It”
2014 10 23
“The Reality Manufacturing Company doesn’t just sell ‘fake paintings’ that are easy to spot. No. They also sell images that are geared to mesh with people’s deeply held instincts and thereby produce rigid false beliefs. People are sure that if they gave up such beliefs, their world would fall apart and blow away in the wind.” ...
New Controversial Theory Suggests "Hobbits" Were Not Human - Who Were These Mysterious Beings?
2014 10 23
The origin of the Hobbit species remains a challenging subject to scientists. The Hobbit’s discovery confirmed the view that the Earth was once populated by many species of human, but new research the Hobbit’s were not human at all! So, who were these mysterious beings? Where did they come from? The idea that our species, Homo sapiens, was the only species of human on ...
Right into enemy hands? ISIS shows off new weapons allegedly airdropped by US (VIDEO)
2014 10 23
Islamic State has published a new video in which a jihadist shows off brand-new American hardware, which was purportedly intended for the Kurds they are fighting in the Syrian border town of Kobani. The undated video, posted by the unofficial IS mouthpiece “a3maq news”, sees a jihadist showing several boxes of munitions with English-language markings, with a parachute spread out on ...
More News »