Technology Found: lone asteroid expelled from early Solar System

11:05  10 may  2018
11:05  10 may  2018 Source:   afp.com

Did another advanced species exist on Earth before humans?

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In contrast, icy comets, rather than asteroids , were more commonly ejected from lone star asteroid belt, where the few asteroids present are likely pristine relics from early in solar system history. journal Geology. 'Largest ever asteroid impact' found in Australia BBC - March 24, 2015 The

And it doesn’t look like any object we’ve ever seen in our cosmic neighborhood before. Follow-up observations, detailed today in Nature, have found that the asteroid is dark and reddish, similar to the objects in the outer Solar System .

Exiled asteroid 2004 EW95 was found beyond the orbit of Neptune© Provided by AFP Exiled asteroid 2004 EW95 was found beyond the orbit of Neptune

An asteroid ejected from our infant Solar System found refuge billions of kilometres away, beyond the orbit of Neptune, where it has now been spotted, astronomers said Wednesday.

The curious loner is the first carbon-rich asteroid ever observed in the far-flung region called the Kuiper belt, which is filled with frozen objects, a team reported in The Astrophysical Journal Letters.

Its composition suggests the asteroid must have been formed in the inner Solar System, likely in the asteroid belt between Mars and Jupiter, before migrating to its outer reaches, said the team.

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What resulted was an early solar system model that has quite a different configuration than today, and a jumbling Nesvorny found that Jupiter did in fact jump due to gravitational interactions from Uranus or Neptune, but when Jupiter jumped, either Uranus or Neptune were expelled from the solar system .

Careful study of the light reflected by C/2014 S3 (PANSTARRS) indicates that it is typical of asteroids known as S-type, which are usually found in the inner asteroid main belt. "Our Early Solar System Harbored SuperEarths" (Weekend Feature).

This makes it "a relic of the primordial Solar System", they added.

Theoretical models of our early Solar System describe a tempestuous time with gas giant planets on the rampage, ejecting small rocky bodies from its the system's centre to far-flung orbits.

Such models suggest the Kuiper Belt should contain a small number of rocky bodies, perhaps also carbon-rich asteroids.

The new observation, using telescopes of the European Southern Observatory in Chile, provides "strong support for these theoretical models of our Solar System's troubled youth," said an ESO statement.

The asteroid was spotted partly because it reflects light differently than other objects in the Kuiper Belt, which are icy while asteroids are rocky.

A tiny galaxy has been found hiding in orbit around the Milky Way

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Their observations indicate that it is an ancient rocky body, rather than a contemporary asteroid that strayed out. As such, it is one of the potential building blocks of the rocky planets, such as the Earth, that was expelled from the inner solar system and preserved in the deep freeze of the Oort Cloud

Asteroid Bennu is a primordial goldmine of secrets. A relic from our early solar system , it may hold molecular precursors to the origin of life. Bennu's orbit takes it close to the Earth every six years, and it has a 1 in 1,000 chance of hitting Earth late in the 22nd century.

"It looked enough of a weirdo for us to take a closer look," said study lead author Tom Seccull of Queen's University Belfast.

It is, nevertheless, very difficult to study.

The 300 kilometre-wide (186 mile) space rock is four billion kilometres from Earth, and dark.

"It's like observing a giant mountain of coal against the pitch-black canvas of the night sky," said co-author Thomas Puzia of the Pontifical Catholic University of Chile.

Dubbed 2004 EW95, the asteroid is moving, and feint.

"We had to use a pretty advanced data processing technique to get as much out of the data as possible," said Seccull.

Asteroid Set to Skim Past Earth Tuesday .
The asteroid was mysteriously "lost" to astronomers for a number of years.Estimated to stretch about 170-400 feet across, asteroid 2010 WC9 should pass at about half the distance to the Moon at its closest approach at 6:05 p.m. ET. It’s not a particularly big asteroid, but this will be a pretty close encounter for a space rock of this size.

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