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NASA probe to fly into sun’s atmosphere

  Kathmandu, Nepal      June 02 2017

Solar eruption of Super-hot plasmo captured in November, 2012. Photo: AFP via NASA/Parker Solar Probe/SDO

Miami, June 1, A new NASA mission aims to brush by the sun, coming closer than any spacecraft in history to its scorching heat and radiation in order to reveal how stars are made, the US space agency said yesterday.
After liftoff from Kennedy Space Centre in Florida in July 2018, the Parker Solar Probe will become the first to fly directly into the sun’s atmosphere, known as the corona.
The plan for the unmanned spacecraft is to orbit within 6.3 million kilometres of the sun’s surface.
Temperatures in that region exceed 1,377 Celsius, for which the spacecraft is equipped with a 11.43-cm-thick carbon-composite shield.
Roughly the size of a small car, the probe will make seven flybys of the sun over a seven-year period, in what NASA described as a “mission of extremes.”
Travelling at a speed of 692,000 kmph, the spacecraft will move fast — like going from New York City to Tokyo in less than a minute.
Scientists hope its data will improve forecasts of solar storms and space weather events that affect life on Earth, satellites and astronauts in space.
The spacecraft will measure plasma waves and high-energy particles, and carry a white light imager to capture images of the structures through which it is flying, according to Nicola Fox, mission project scientist at the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland.
“We will brush closely by it,” she said at an event in Chicago to unveil the mission, which NASA has touted as promising to provide humanity’s closest-ever observations of a star.
“You can learn so much from looking out the window,” Fox said. “You can see the sun is shining, you can see the birds are singing. But until you actually go out, you have no idea quite how hot it is out there or how windy it is, or what the conditions are like.”
“I think we have really come as far as we can with looking at things and now it is time to go up and pay it a visit,” she added. A 20-day launch window for the spacecraft’s liftoff atop a Delta IV Heavy rocket opens July 31, 2018.
Re-named after astrophysicist
MIAMI: Initially called Solar Probe Plus, the mission was renamed after the astrophysicist Eugene Parker, 89, professor emeritus at the University of Chicago.
He published the first paper to describe solar wind — the high-speed matter and magnetism constantly escaping the sun — in 1958.
“This is the first time NASA has named a spacecraft for a living individual,” said Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate in Washington.
“It’s a testament to the importance of his body of work, founding a new field of science that also inspired my own research and many important science questions NASA continues to study and further understand every day.”