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The observations and data could provide insight about the physics of stars, change what we know about the mysterious corona, increase understanding of solar wind and help improve forecasting of major space weather events. Those events can affect satellites and astronauts as well as the Earth -- including power grids and radiation exposure on airline flights, NASA said.Solar wind is the flow of charged gases from the sun, present in most of the solar system. It screams past Earth at a million miles per hour, and disturbances can cause disruptive space weather that impacts our planet.Surveys by the National Academy of Sciences have estimated that a solar event with no warning could cause trillion in damage in the United States and leave parts of the country without power for a year.The mission's objectives include "tracing the flow of energy that heats and accelerates the sun's corona and solar wind, determining the structure and dynamics of the plasma and magnetic fields at the sources of the solar wind and explore mechanisms that accelerate and transport energetic particles."Four suites of instruments will gather the data needed to answer key questions about the sun. FIELDS will measure electric and magnetic waves around the probe, WISPR will take images, SWEAP will count charged particles and measure their properties, and ISOIS will measure the particles across a wide spectrum.But what part of this mission will "touch" the sun? The Solar Probe Cup, dubbed "the bravest little instrument," is a sensor that will extend beyond the heat shield to "scoop up samples" of the sun's atmosphere, according to Justin Kasper, mission principal investigator and professor of climate, space sciences and engineering at the University of Michigan. The cup will glow red when the probe makes its closest approach to the sun, sampling the solar wind and effectively touching the sun."The Alfvén point is the distance from the Sun beyond which the charged particles that make up the solar wind are no longer in contact with the surface of the Sun," Kristopher Klein, co-investigator for the probe and University of Arizona Lunar and Planetary Lab assistant professor, said in a statement. "If the Parker Solar Probe can reach below the Alfvén point, then we can say the spacecraft has entered the solar atmosphere and touched the Sun."The probe will be close enough to watch solar wind whip up from subsonic to supersonic. It will also pass through the origin of the solar particles with the highest energy."It will provide us with a better understanding of the environment the Earth is in," Klein said. "Our ability to forecast space weather is about as good as our weather forecasts were in the 1970s. If you have a better understanding of the behavior of these solar energetic particles, then you can make better predictions about when to send astronauts to Mars or protect a satellite before it gets ripped apart by a radiation burst."The mission is scheduled to end in June 2025. The first data download from the Parker Solar Probe is expected in early December, after the probe reaches its first close approach of the sun in November."Eventually, the spacecraft will run out of propellant," said Andy Driesman, Parker Solar Probe project manager at the Johns Hopkins Applied Physics Lab. "The way I like to think about it: In 10 to 20 years, a carbon disk will be floating around the sun in orbit, and it will be around until the end of the solar system." 3473

The National Highway Traffic Safety Administration, which draws up federal standards with the EPA, said the government continues to work on a final fuel economy rule that will apply to all automakers. The administration's proposals do not prevent any automaker from designing and building highly fuel-efficient vehicles, the agency said in a statement. 352

The missile was fired at 8:07 p.m. local time (1:07 p.m. ET) and targeted civilian areas in Riyadh, the coalition said. It was intercepted by the Patriot missile defense system, leading to shrapnel falling over an uninhibited area east of the airport, the statement said. 271

The Padres optioned left-hander Robbie Erlin to Class A Lake Elsinore to clear room for Avila to become the third San Diego pitcher to make his big league debut in the season's first 14 games. Nick Margevicius and Chris Paddack each debuted against San Francisco. 263

The order to halt publication by Sept. 30, and dissolve the organization by the end of January, follows the Pentagon's move earlier this year to cut the .5 million in funding for the paper from the department's budget. According to USA Today, the order was written by Col. Paul Haverstick Jr.And it is a reflection of the Trump administration's broader animosity for the media and members of the press.On Friday, President Donald Trump tweeted that funding for the newspaper would not be cut "under his watch." 513