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First Carbon Rich Asteroid Found in Kuiper Belt

The researchers found that the asteroid's reflectance spectrum -- the specific pattern of wavelengths of light reflected from an object -- was different to that of similar small Kuiper Belt Objects (KBOs), which typically have uninteresting, featureless spectra that reveal little information about their composition.

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This object, designated 2004 EW95, likely formed in the asteroid belt between Mars and Jupiter and has been flung billions of kilometres from its origin to its current home in the Kuiper Belt, the study said.
Astronomers find first carbon-rich asteroid in Kuiper Belt, pixabay
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Astronomers have discovered an unusual carbon-rich asteroid in the Kuiper Belt — the first of its kind to be confirmed in the cold outer reaches of the solar system.

This object, designated 2004 EW95, likely formed in the asteroid belt between Mars and Jupiter and has been flung billions of kilometres from its origin to its current home in the Kuiper Belt, the study said.

The researchers found that the asteroid’s reflectance spectrum — the specific pattern of wavelengths of light reflected from an object — was different to that of similar small Kuiper Belt Objects (KBOs), which typically have uninteresting, featureless spectra that reveal little information about their composition.

“The reflectance spectrum of 2004 EW95 was clearly distinct from the other observed outer Solar System objects,” explained lead author Tom Seccull of Queen’s University Belfast in Britain

“It looked enough of a weirdo for us to take a closer look,” Seccull added.

In particular, these models suggest that the Kuiper Belt -- a cold region beyond the orbit of Neptune -- should contain a small fraction of rocky bodies from the inner solar system, such as carbon-rich asteroids, referred to as carbonaceous asteroids.
representational image, pixabay

Theoretical models of the early days of our solar system predict that after the gas giants formed they rampaged through the solar system, ejecting small rocky bodies from the inner solar system to far-flung orbits at great distances from the Sun.

In particular, these models suggest that the Kuiper Belt — a cold region beyond the orbit of Neptune — should contain a small fraction of rocky bodies from the inner solar system, such as carbon-rich asteroids, referred to as carbonaceous asteroids.

The new study, published in The Astrophysical Journal, presented evidence for the first reliably-observed carbonaceous asteroid in the Kuiper Belt, providing strong support for these theoretical models of our solar system’s troubled youth.

Also Read: NASA Chief: Moon Mission a Step Forward to Reach Mars 

After measurements from multiple instruments at European Southern Observatory’s Very Large Telescope (VLT), the team of astronomers was able to measure the composition of the object.

The results suggest that it originally formed in the inner solar system and must have since migrated outwards. (IANS)

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Astronomers Found Ancient Star Formed By Big Bang

This suggests that it could be as little as one generation removed from the beginning of the universe, the researchers noted

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Astronomers discover ancient star formed by Big Bang, pixabay

A team of astronomers have found what could be one of the universe’s oldest stars, almost entirely made of materials formed by the Big Bang.

Residing in the same part of the Milky Way galaxy as our own solar system, the star is believed to be up to 13.5 billion years old which is evidenced by its extremely low metal content, or metallicity, Xinhua news agency reported.

According to co-author Andrew Casey, it was previously believed that the first stars that formed in the universe could not possibly still exist today.

“The findings are significant because for the first time we have been able to show direct evidence that very ancient, low mass stars do exist, and could survive until the present day without destroying themselves,” Casey said.

Keplar, NASA
According to co-author Andrew Casey, it was previously believed that the first stars that formed in the universe could not possibly still exist today. VOA

The metallicity of stars increases as they are born and die, in a cycle which results in the creation of more and more heavy metals, with the Earth’s sun being around 100,000 generations down that line and holding a metal content roughly equal to 14 Jupiters.

Stars created at the beginning of the universe, however, would have consisted entirely of elements like hydrogen, helium and small amounts of lithium – meaning the extremely low metallicity of the newly discovered star, about the same as the planet Mercury.

This suggests that it could be as little as one generation removed from the beginning of the universe, the researchers noted.

Also Read- Artificial Intelligence Will Match Humans By 2062: Experts

Up until around 1990, scientists believed that only massive stars could have formed in the early stages of the universe, and could never be observed because they burn through their fuel so quickly and die.

However, the new study has shown that it is possible for low mass stars to last as long as the 13 billion years since the Big Bang — Red Dwarf stars for instance, which have a fraction of the mass of the sun, are thought to live for trillions of years. (IANS)