NASA launches Parker Solar Probe on historic mission: As per the report a United Launch Alliance heavy-lift Delta 4 rocket thundered away from Cape Canaveral early Sunday. Boosting NASA’s $1.5 billion Parker Solar Probe into space on a daring seven-year mission to “touch the sun”. It was with repeated trips therefore the star’s blazing outer atmosphere.
Passing within 3.8 million miles of the sun’s visible surface. That was well within the shimmering halo of the outer atmosphere. That is also called corona — the spacecraft’s heat shield will endure 2,500-degree heating. While whipping past the star at a record 430,000 mph. It was fast enough to fly from New York to Tokyo in less than a minute.
This goal will help scientists to figure out what makes the corona hotter than the sun’s visible surface. And also that what accelerates charged particles to enormous velocities. Which produced the solar wind that streams away from the corona in all directions.
And the mystery is profound. The visible surface of the sun has a temperature of about 10,000 degrees Fahrenheit. But just above it, in the corona, the temperature shoots up to several million degrees.
Infact it will fly repeatedly through the corona. Parker will not experience such extreme temperatures. Because the ionized gas making up the outer atmosphere is so tenuous. But the probe’s heat shield will still get hotter than lava. While its instruments study the hellish environment in unprecedented detail.
Scientists are saying they have two theories about what heats up the corona. It could be due to interactions between electrically charged particles and the sun’s powerful magnetic field. And either it could be the result of countless “nanoflares” governed by another mechanism. Or maybe, both.
Scientists says, “Until you actually go there and touch the sun, you really can’t answer these questions”. “Why is the corona hotter than the surface of the sun? That defies the laws of nature. It’s like water flowing uphill, it shouldn’t happen.
If we will search more about the solar wind also will help scientists better predict the effects of solar storms. And also the impact of the solar wind on Earth’s magnetic field. And wreaking havoc with communications, power grids and navigation.