Dec 14, 2017

Two new planets discovered with Google AI

Kepler 90 is the first known 8-planet system outside of our own. In this system, planets orbit closer to their star, and Kepler 90i orbits once every 14 days. Image: Google

A Google machine learning algorithm found two new planets in previously studied data from NASA's Kepler Space Telescope.

The details:

  • Kepler-90i is the eighth planet to be found in the Kepler-90 system, which is 2,545 light years away from Earth. “This discovery ties Kepler-90 with our own solar system for having the most known planets," according to NASA's Paul Hertz, who spoke in a press conference.
  • The rocky planet is about 30% larger than Earth, likely has an average temperature of about 800°F, and orbits its star every 14.4 days. All of the known planets in the Kepler-90 system are closer to their star than Earth is to the Sun, says astronomer and co-discoverer Andrew Vanderburg from the University of Texas at Austin.
  • A second Earth-sized planet, Kepler-80g, was also spotted.
  • Exoplanets can be found by looking for a change in a star's brightness as a planet passes in front of it. The AI — a neural network — learned to identify planets from 15,000 Kepler signals that had already been labeled by scientists. When the AI then looked at data from 670 stars, it found the two planets.

What's next: They hope to study Kepler's data from more than 150,000 stars to see if they can spot weak signals researchers missed.

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A trader on the floor of the New York Stock Exchange. Photo: Johannes Eisele/AFP via Getty Images

Stocks fell more than 4% on Thursday, extending the market’s worst week since the financial crisis in 2008 following a spike in coronavirus cases around the world.

The big picture: All three indices are in correction, down over 10% from recent record-highs, amid a global market rout. It's the S&P 500's quickest decline into correction territory in the index's history, per Deutsche Bank.

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Data: The Center for Systems Science and Engineering at Johns Hopkins, the CDC, and China's Health Ministry. Note: China numbers are for the mainland only and U.S. numbers include repatriated citizens.

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The big picture: COVID-19 has killed more than 2,800 people and infected over 82,000 others in some 50 countries and territories. The novel coronavirus is now affecting every continent but Antarctica, and the WHO said Wednesday the number of new cases reported outside China has exceeded those inside the country for the first time.

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Watchdog opens probe into VA secretary over handling of sexual assault claim

VA Secretary Robert Wilkie on Fox Business Network’s "The Evening Edit" on Jan. 7. Photo: Steven Ferdman/Getty Images

The Department of Veterans Affairs Inspector General Michael Missal said Thursday he had opened an investigation into VA Secretary Robert Wilkie after lawmakers demanded an inquiry into his handling of a sexual misconduct report, the Washington Post reports.

Context: Wilkie allegedly "worked to discredit" the credibility of Democratic aide and veteran Andrea Goldstein after she reported last fall "that a man groped and propositioned her in the main lobby of the agency's D.C. Medical Center," a senior VA official told the Post.