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NASA has discovered eighth planet in distant star system

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NASA has discovered eighth planet in distant star system

NASA’s Kepler space telescope has discovered an eighth planet in a distant star system called Kepler 90 – the first time a faraway star has been found to have the same number of planets orbiting it as our own sun.

Although the Kepler 90 solar system is not new, the eighth planet, Kepler 90i, is, after it was found using AI software in a groundbreaking project between Google and NASA.

The discovery of a system similar to our own raises hopes of finding alien life elsewhere in the universe.

The Kepler-90 planets have a similar configuration to our solar system, with small planets orbiting close to their star and the larger planets found farther away.

According to NASA, this confirms for the first time that distant star systems can be home to ‘families as large as our own.’

The new planet, estimated to be about 30 percent larger than Earth, is ‘not a place you’d like to visit,’ said Andrew Vanderburg, astronomer and NASA Sagan Postdoctoral Fellow at The University of Texas, Austin.

‘It is probably rocky, and doesn’t have a thick atmosphere’. And, temperatures at the surface are ‘scorching.’

According to Vanderburg, the average surface temperature is likely around 800 degrees Fahrenheit.

The Kepler planet hunting satellite has been searching the stars for distant worlds using Google’s AI system, which used machine learning to ‘find’ planets in the Kepler data with up to 96 percent accuracy.

Neural networks can be trained on huge amounts of data to determine the difference between objects with great accuracy, the team explained in the teleconference.

Much like an AI can learn to spot the difference between cats and dogs, it can spot the difference between patterns associated with planets, and other types of patterns in the cosmos that could be false positives.

‘After showing our model 15,000 signals, the neural network learned how to distinguish patterns from actual planets from patterns that are caused by other objects,’ said Christopher Shallue, senior software engineer at Google AI in Mountain View, California.

He worked on the system as part of his ’20 per cent time’ at the company, where employees are allowed to work on anything they want.

We used our model to identify two new planets from a set of 670 stars,’ Shallue explained.

‘One of these two planets is called Kepler 80g.

‘The planet we are focusing on today is called Kepler 90i, which is the eighth planet in its star system.’

‘This is a really exciting discovery, and we consider it to be a success,’ in the use of neural networks in the search for distant worlds, the expert explained.

The star system sits roughly 2,545 light-years from Earth in the constellation Draco, and of the new planets found, Kepler 90i is the ‘smallest of the bunch.’

The new planet orbits its star once every 14.4 days.

But, all of the planets in this system ‘tightly’ orbit their star, which is thought to be cooler than our own sun, meaning their orbital periods are relatively short.

Before the latest AI-guided results, ‘Kepler 90 was tied with Trappist-1, with 7 planets each,’ says Jessie Dotson, Kepler project scientist at NASA’s Ames Research Center in California’s Silicon Valley.

‘But now, it ties with our own system with the most known number of planets’ around a star.

The Kepler 90 system was first discovered back in 2013. It was the first seven-planet system identified with the telescope.

But, the eighth planet remained undetected for years – until Google’s AI picked up on its ‘weak’ signal.

The AI uses light readings from distant stars to identify potential signs of a planet – and, after training on thousands of previously vetted signals, it was able to spot the previously missed patterns of the elusive eight planet.

‘We get lots of false positives of planets, but also potentially more real planets,’ Vanderburg said.

‘It’s like sifting through rocks to find jewels. If you have a finer sieve, then you will catch more rocks, but you might catch more jewels as well.’

The latest discovery is not just a planet candidate; according to NASA, the latest exoplanet has been confirmed to be ‘almost certainly,’ an exoplanet, with 1 in 10,000 false positive probability.

While the discovery is exciting, this particular system isn’t the most promising for the possibility of hosting life.

All of its planets are packed close to the star.

All eight planets of Kepler 90 sit closer to their host star than Earth is to the su

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  1. PAPARAZZI NEWS

    December 15, 2017 at 12:31 am

    NASA has discovered eighth planet in distant star system

    NASA's Kepler space telescope has discovered an eighth planet in a distant star system called Kepler 90 – the first time a faraway star has been found to have the same number of planets orbiting it as our own sun.

    Although the Kepler 90 solar system is not new, the eighth planet, Kepler 90i, is, after it was found using AI software in a groundbreaking project between Google and NASA.

    The discovery of a system similar to our own raises hopes of finding alien life elsewhere in the universe.

    The Kepler-90 planets have a similar configuration to our solar system, with small planets orbiting close to their star and the larger planets found farther away.

    According to NASA, this confirms for the first time that distant star systems can be home to 'families as large as our own.'

    The new planet, estimated to be about 30 percent larger than Earth, is 'not a place you'd like to visit,' said Andrew Vanderburg, astronomer and NASA Sagan Postdoctoral Fellow at The University of Texas, Austin.

    'It is probably rocky, and doesn’t have a thick atmosphere'. And, temperatures at the surface are 'scorching.'

    According to Vanderburg, the average surface temperature is likely around 800 degrees Fahrenheit.

    The Kepler planet hunting satellite has been searching the stars for distant worlds using Google's AI system, which used machine learning to 'find' planets in the Kepler data with up to 96 percent accuracy.

    Neural networks can be trained on huge amounts of data to determine the difference between objects with great accuracy, the team explained in the teleconference.

    Much like an AI can learn to spot the difference between cats and dogs, it can spot the difference between patterns associated with planets, and other types of patterns in the cosmos that could be false positives.

    'After showing our model 15,000 signals, the neural network learned how to distinguish patterns from actual planets from patterns that are caused by other objects,' said Christopher Shallue, senior software engineer at Google AI in Mountain View, California.

    He worked on the system as part of his '20 per cent time' at the company, where employees are allowed to work on anything they want.

    We used our model to identify two new planets from a set of 670 stars,' Shallue explained.

    'One of these two planets is called Kepler 80g.

    'The planet we are focusing on today is called Kepler 90i, which is the eighth planet in its star system.'

    'This is a really exciting discovery, and we consider it to be a success,' in the use of neural networks in the search for distant worlds, the expert explained.

    The star system sits roughly 2,545 light-years from Earth in the constellation Draco, and of the new planets found, Kepler 90i is the 'smallest of the bunch.'

    The new planet orbits its star once every 14.4 days.

    But, all of the planets in this system ‘tightly’ orbit their star, which is thought to be cooler than our own sun, meaning their orbital periods are relatively short.

    Before the latest AI-guided results, 'Kepler 90 was tied with Trappist-1, with 7 planets each,' says Jessie Dotson, Kepler project scientist at NASA's Ames Research Center in California’s Silicon Valley.

    'But now, it ties with our own system with the most known number of planets' around a star.

    The Kepler 90 system was first discovered back in 2013. It was the first seven-planet system identified with the telescope.

    But, the eighth planet remained undetected for years – until Google’s AI picked up on its ‘weak’ signal.

    The AI uses light readings from distant stars to identify potential signs of a planet – and, after training on thousands of previously vetted signals, it was able to spot the previously missed patterns of the elusive eight planet.

    ‘We get lots of false positives of planets, but also potentially more real planets,’ Vanderburg said.

    ‘It’s like sifting through rocks to find jewels. If you have a finer sieve, then you will catch more rocks, but you might catch more jewels as well.’

    The latest discovery is not just a planet candidate; according to NASA, the latest exoplanet has been confirmed to be 'almost certainly,' an exoplanet, with 1 in 10,000 false positive probability.

    While the discovery is exciting, this particular system isn’t the most promising for the possibility of hosting life.

    All of its planets are packed close to the star.

    All eight planets of Kepler 90 sit closer to their host star than Earth is to the su

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New Planet

Lucas and the TenniBot: Daily Planet

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Lucas is at CES 2018 this week and it looks like he met a new friend! Meet the Tennibot- the world’s first autonomous tennis ball collector!

Daily Planet airs weeknights at 7e 4p only on Discovery Canada!

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Debris Disk Simulations Generate Spirals, Rings and Arcs

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When exoplanet scientists first spotted patterns in disks of dust and gas around young stars, they thought newly formed planets might be the cause. But a recent NASA study cautions that there may be another explanation: one that doesn’t involve planets at all.
An alternative explanation suggests the dust and gas in the disk can form the patterns themselves when they interact with starlight.
When high-energy UV starlight hits dust grains, it strips away electrons. Those electrons collide with and heat nearby gas. As the gas warms, its pressure increases and it traps more dust, which in turn heats more gas. The resulting cycle, called the photoelectric instability (PeI), can work in tandem with other forces to create some of the features astronomers have previously associated with planets in debris disks.

A 2013 study suggested PeI could explain the narrow rings seen in some disks. The model also predicted that some disks would have arcs, or incomplete rings, which weren’t directly observed in a disk until 2016.

The new simulation includes an additional new factor: radiation pressure, a force caused by starlight striking dust grains.

Light exerts a minute physical force on everything it encounters. This radiation pressure propels solar sails and helps direct comet tails so they always point away from the Sun. The same force can push dust into highly eccentric orbits, and even blow some of the smaller grains out of the disk entirely.

The new research modeled how radiation pressure and PeI work together to affect the movement of dust and gas, and also found that the two forces manifest different patterns depending on the physical properties of the dust and gas.

Credit: NASA’s Goddard Space Flight Center/Scott Wiessenger

Music: “Hyperborea” from Killer Tracks.

This video is public domain and along with other supporting visualizations can be downloaded from the Scientific Visualization Studio at:

If you liked this video, subscribe to the NASA Goddard YouTube channel:

Or subscribe to NASA’s Goddard Shorts HD Podcast:

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New Planet

NASA new Discovery 2018 of World

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This video is about NASA’s Spitzer Space Telescope has revealed the first known system of 2018 seven Earth size planets around a single star. Three of these planets
are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.

The discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven
planets could have liquid water key to life as we know it under the right atmospheric conditions, but the chances are highest with the three in the habitable
zone.
This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said
Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. Answering the question ‘are we alone’ is a top science
priority and finding so many planets like these for the first time in the habitable zone is a remarkable
step forward toward that goal Thanks for watching

Please like and share if you like this video

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