【第二个太阳系?!NASA和谷歌有重大发现】

【第二个太阳系?!NASA和谷歌有重大发现】通过谷歌人工智能,NASA在开普勒-90系统中发现了一颗新行星(被命名为开普勒-90i),这一发现表明,开普勒-90系统的已知行星数量和太阳系极为相似。NASA表示,虽然开普勒-90i并不适合人类生存,但谷歌AI可能在20万颗星球的数据中还有更多发现。

http://www.dailymail.co.uk/sciencetech/article-5180327/NASA-set-major-announcement.html

NASA finds a second solar system as big as ours: Google AI hunt finds an EIGHTH planet orbiting distant Kepler 90 star in breakthrough in hunt for aliens

  • NASA has discovered an eighth planet around a previously discovered distant star system
  • Means Kepler 90 system now ties with our own in number of planets orbiting its star
  • The system, Kepler 90, was previously tied with Trappist-1 for number of planets around the star 
  • The latest find was made using artificial intelligence from Google, which will help find habitable planets
  • The satellite has been searching the stars for distant worlds since 2014, and has so far found thousands 

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.

Scroll down for video 

NASA's Kepler space telescope has discovered an eighth planet in a distant star system, tying our own solar system for the first time. The discovery in the Kepler-90 system was made possible with help from Google's advanced AI machine learning system. Pictured, the Kepler 90 system in its entirety, with Kepler 90i, the new planet, third from left.

NASA's Kepler space telescope has discovered an eighth planet in a distant star system, tying our own solar system for the first time. The discovery in the Kepler-90 system was made possible with help from Google's advanced AI machine learning system. Pictured, the Kepler 90 system in its entirety, with Kepler 90i, the new planet, third from left.

KEPLER 90i FACTS

The newly-discovered Kepler-90i is a sizzling hot, rocky planet that orbits its star once every 14.4 days.

It is 30 percent larger than Earth, and with a surface temperature of approximately 800°F—not ideal for your next vacation.

It also orbits its star every 14 days, meaning you’d have a birthday there just about every two weeks.

The Kepler 90 star system sits roughly 2,545 light-years from Earth, in the constellation Draco.

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.

COULD IT BE HOME TO ALIEN LIFE?

Kepler 90i (artist's impression above) ' is probably rocky, and doesn’t have a thick atmosphere', the experts say. And, temps at the surface are 'scorching,' at around 800 degrees F

Kepler 90i (artist's impression above) ' is probably rocky, and doesn’t have a thick atmosphere', the experts say. And, temps at the surface are 'scorching,' at around 800 degrees F

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, the discovery of the eighth confirms for the first time that distant star systems can be home to 'families as large as our own.'

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

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.

The average surface temperature on Kepler 90i is likely around 800 degrees Fahrenheit.

And, in the rest of the system, 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 sun; in our own solar system, on the other hand, only Mercury and Venus have such tight orbits.

Kepler 90i is about as hot as Mercury, while the outermost planet in the system, Kepler 90h, is a gas giant roughly the size of Jupiter.

'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.

How AI spotted Kepler 90i: The measured brightness of a star decreases ever so slightly when an orbiting planet blocks some of the light. The Kepler space telescope observed the brightness of 200,000 stars for 4 years to hunt for these characteristic signals caused by transiting planets

 In the teleconference, the researchers revealed this is the first time scientists have confirmed that stars can have 'large families of planets just like our solar system'

 In the teleconference, the researchers revealed this is the first time scientists have confirmed that stars can have 'large families of planets just like our solar system'

 

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.

NASA says the Kepler-90 system is likely a stable system much like the recently found Trappist-1 system - but, it has surpassed the latter in the number of planets it's now known to host. Like some of the planets in our own solar system, the planets of Kepler 90 orbit close to their star

NASA says the Kepler-90 system is likely a stable system much like the recently found Trappist-1 system - but, it has surpassed the latter in the number of planets it's now known to host. Like some of the planets in our own solar system, the planets of Kepler 90 orbit close to their 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 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

 


Comments are closed.



无觅相关文章插件