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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.

Go deeper

Tina Reed, author of Vitals
4 hours ago - Health

FDA panel endorses shot of J&J booster for adults

Photo: Wolfgang Kumm/picture alliance via Getty Images)

Members of the Food and Drug Administration's vaccine expert panel on Friday unanimously endorsed a booster shot for adult recipients of Johnson & Johnson's COVID-19 vaccine at least two months after the initial dose.

Why it matters: The advisory committee raised concerns about a dearth of data to support their decision but ultimately decided to support an additional shot for those over 18.

Capitol Police officer indicted for obstructing Jan. 6 investigation

Trump supporters clash with police and security forces as people try to storm the Capitol on Jan. 6. Photo: Brent Stirton/Getty Images

A U.S. Capitol Police officer has been indicted on obstruction of justice charges for allegedly helping hide evidence of a participant's involvement in the Jan. 6 riot.

Driving the news: Officer Michael A. Riley, 50, is accused of telling the unidentified participant, referred to as "Person 1," in the Jan. 6 riot to delete posts from Facebook, which showed them in the Capitol during the attack.

7 hours ago - World

British MP dies after being stabbed while meeting constituents

Police outside Belfairs Methodist Church in Leigh-on-Sea, England, on Oct. 15. Photo: John Keeble/Getty Images

David Amess, a Conservative Party lawmaker in the U.K., was fatally stabbed Friday while meeting with local constituents in a church in eastern England, according to AP.

The big picture: Police said a man, 25, was arrested for the stabbing in Leigh-on-Sea and is being held on suspicion of murder. A knife was also recovered at the scene, authorities said.