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Published: Thursday, December 14, 2017 @ 9:54 PM
— Looks like our solar system isn’t the only one out there with eight planets circling around a single star.
Our @NASAKepler mission's search for new planets teamed with machine learning to discover another solar system with an 8th planet that is 2,500 light-years away. Here’s what you need to know about the #Kepler90 discovery: https://t.co/2JpIr7p4pE pic.twitter.com/nqvLw5mlSv— NASA (@NASA) December 14, 2017
NASA scientists, along with Google engineers, used artificial intelligence to discover a new, scorching hot planet in the Kepler-90 solar system, bringing the total number of planets circling the Sun-like star to eight, the agency announced Thursday.
Scientists used Google machine learning to teach computers how to identify planets in the light readings recorded by NASA’s planet-hunting Kepler space telescope.
Here’s what you should know about the new discovery, according to Thursday’s live teleconference:
What exactly is the Kepler mission?
The Kepler mission, NASA Discovery’s tenth mission, first launched in March 2009 with a goal to survey the Milky Way and hunt for Earth-size and smaller planets near the galaxy or “habitable” regions of planets’ parent stars.
In 2014, the Kepler space telescope began a new extended mission called K2, which continues the hunt for planets outside our solar system along with its other cosmic tasks.
According to Space.com, “Kepler spots alien worlds by noticing the tiny brightness dips they cause when they cross the face of their host star from the spacecraft's perspective.”
Since 2009, Kepler has discovered thousands of exoplanets ranging between Earth-size and Neptune-size (four times the size of Earth).
As of Dec. 14, Kepler has confirmed 2,341 exoplanets.
How did NASA find the planet?
Researchers Christopher Shallue (Google AI software engineer) and Andrew Vanderburg (NASA astronomer) were inspired by the way neurons in the human brain connect and adapted the “neural network” concept to machine learning.
They taught computers how to identify planets in the light readings recorded by the Kepler telescope by first training them to search for the weaker signals in 670 star systems that already had multiple planets.
“Their assumption was that multiple-planet systems would be the best places to look for more exoplanets,” researchers wrote in the press release.
Using this concept, the network “found weak transit signals from a previously-missed eighth planet orbiting Kepler-90, in the constellation Draco.”
Their findings will be published in The Astronomical Journal.
Would humans have found the planet without machine learning?
Without machine learning, it would have taken humans much longer to scan the recorded signals from planets beyond our solar system (exoplanets), Shallue said. Kepler’s four-year dataset consists of 35,000 possible planetary signals.
Additionally, people are likely to miss the weaker signals that machine learning was able to identify.
Won’t this form of automation put astronomers out of work?
"This will absolutely work alongside astronomers," Jessie Dotson, Kepler’s project scientist at NASA’s Ames Research Center in California’s Silicon Valley, said in a press briefing. "You're never going to take that piece out."
Researchers hope astronomers will use this form of automation via machine learning as a tool to help astronomers make more of an impact, increase their productivity and inspire more people become astronomers.
Published: Tuesday, January 16, 2018 @ 5:16 PM
WASHINGTON — President Donald Trump is in excellent health and likely to finish his term in office without any medical issues, a presidential doctor said Tuesday at a news conference, four days after the president underwent a physical exam.
“The president's overall health is excellent," White House physician Dr. Ronny Jackson said Tuesday.
Here are six things to know about the results of the president’s physical:
Jackson: ‘He had great findings across the board’
Trump is in “very, very good health,” Jackson said Tuesday.
“(I have) no concerns for his heart health,” the presidential physician said. “There are many good things that came from his exam, I think he had great findings across the board. “
Jackson said Trump’s good health is likely to last through “the remainder of this tern, and even for the remainder of another term, if he’s elected.” He said he based his assessment on the president’s cardiac results.
“He falls into a category that portends years of event-free living,” Jackson said. “He has incredibly good genes, and that’s just the way God made him.”
White House doctor says despite President Trump's fast food habit and lack of exercise, he's in "excellent" condition; "He has incredibly good genes, and it's just the way God made him" https://t.co/fpNP3Hpnco pic.twitter.com/VGoTFSgp7C— CNN (@CNN) January 16, 2018
Cognitive screening showed no issues
Jackson said he conducted a cognitive screening on Trump at the president’s request, although he felt the test was unnecessary.
“I’ve spent almost every day in the president’s presence,” said Jackson, whose office is near Trump’s. “I’ve got to know him pretty well and I had absolutely no concerns about his cognitive ability or neurological functions.”
He said that in all his conversations with Trump, the president has been “very articulate.”
“I’ve never known him to repeat himself around me,” Jackson said. “He says what he wants to say and speaks his mind.”
Infamous slurred speech incident might have been caused by medication
A December incident in which the president sounded as though he was slurring his speech while announcing a policy shift in Israel was probably due to a medication, Jackson said.
“We evaluated him, we checked everything out and everything was normal,” Jackson said, adding that the incident was likely caused because the president needed water.
He said prior to the Dec. 7 incident, he gave Trump Sudafed, which might have “inadvertently dried up his secretions.”
Trump working to lose 10-15 pounds
At 6-foot-3 and 239 pounds, the president has a body mass index of 29.9, just under the number that would designate him as obese, according to information released Tuesday.
“The president, he and I talked and... I think a reasonable goal over the next year or so is (to lose) 10 or 15 pounds,” Jackson said, adding that a nutritionist would be meeting with White House chefs in the coming weeks and that Trump would be put on an exercise routine.
“He’s more enthusiastic about the diet,” Jackson said.
Jackson not concerned about Trump’s stress levels
Despite concerns from the public and reports that have painted a chaotic White House, Jackson said that he has no concerns about the president’s stress levels.
“I talk to him sometimes about stress just because I think it’s my job as his physician to bring it up on occasion,” he said. “I’ve never seen the president stressed out too much. ... He has a unique ability to push the reset button and he just gets up and he starts a new day. (I think it’s) made him healthier from a stress standpoint.”
Jackson did not test Trump’s hearing
Published: Tuesday, January 16, 2018 @ 10:45 AM
SEATTLE — A freight train hit and killed a pedestrian near the King Street Station in Seattle shortly before 6 a.m. Tuesday.
Published: Tuesday, January 16, 2018 @ 11:57 AM
WASHINGTON — Special counsel Robert Mueller has subpoenaed President Donald Trump’s former chief strategist, Steve Bannon, to testify before a grand jury as part of the ongoing investigation into Russian meddling in the 2016 presidential election and its possible ties to the Trump campaign, The New York Times reported Tuesday.
SCOOP: Mueller has subpoenaed Steve Bannon to testify before a grand jury as part of the ongoing Russia investigation. First person in Trump's inner circle known to have received a grand jury subpoena. https://t.co/dbKWuDjdMp— Michael S. Schmidt (@nytmike) January 16, 2018
Published: Friday, December 29, 2017 @ 1:55 PM
— As temperatures dip across the country, you may want to check your state laws to find out if it is illegal to start your car and let it warm-up.
Several states, including Ohio, Texas and Georgia, have laws on the books that prohibit drivers from letting cars idle in a driveway or on a street, WYFF reported.
Law enforcement agencies and insurance companies have been warning drivers for nearly a decade that allowing cars to warm up, unattended, idling outside, as drivers wait inside, is an invitation for thieves to take the vehicles.
If your car is stolen while you let it warm up, whether it would be covered by your insurance, depends on the company and your policy.
If you want to warm the car, legally, while staying warm yourself, one community in Colorado suggests investing in a remote starter. That way, the keys stay safely with you and the car remains locked but running.
How can you find out if idling vehicles are illegal in your state? You can start by checking with the Environmental Protection Agency.
The laws differ by state, and even by municipality. There are laws in Allegheny County, Pennsylvania, for example, that say how long a certain types of vehicles can idle and at what temperature.
Even if it is legal to warm up your car, do you really need to let the car run before heading out on the road?
Mechanics say no.
The idea of letting a car warm up comes from old engines that had carburetors. Now, most vehicles don’t have the part that mixes gas and air to make vaporized fuel. Instead, the majority of vehicles built after the 1980s have fuel injection, Business Insider reported.
Experts said that idling a car wastes fuel and wears on the engine.