Mumbai: After successfully completing its 6th Venus flyby using the planet’s gravity, NASA’s Parker Solar Probe is now toward a record-setting series of flights around the Sun set to start next month.
At just before 8:03 a.m. EDT Monday August 21 moving approximately 15 miles (more than 24 kilometers) per second, Parker Solar Probe passed 2,487 miles (4,003 kilometers) above the Venusian surface as it curved around the planet toward the inner solar system, NASA said.
“Parker Solar Probe remains on track to make its closest flybys yet of the Sun,” said Nick Pinkine, Parker Solar Probe mission operations manager from the Johns Hopkins Applied Physics Laboratory (APL) in Maryland.
“Parker’s success is a tribute to the entire mission team, but I’m especially proud of the mission operators and the job they’ve done over the past five years to ensure the flawless operation of this incredible, history-making spacecraft,” Pinkine added.
Venus gravity assists are essential to guiding Parker Solar Probe progressively closer to the Sun; the spacecraft relies on the planet to reduce its orbital energy, which in turn allows it to travel closer to the Sun — where, since 2018, it has been exploring the origins and unlocking the secrets of the solar wind and other properties of the near-Sun environment at their source.
This was the Parker mission’s sixth of seven planned Venus gravity assists. This week’s flyby served as an orbit manoeuvre applying a velocity change — called “delta-V” — on Parker Solar Probe, reducing its orbital speed by about 9,547 km per hour.
The manoeuver changed the spacecraft’s orbit and set Parker Solar Probe up for its next five close passes by the Sun, the first of which will occur on September 27.
On each close approach (known as perihelion), Parker Solar Probe will set or match its own speed and distance records when it comes to within just 7.3 million kilometres from the solar surface, while moving close to 394,800 miles per hour.
Launched in 2018, the car-size Parker Solar Probe, was developed as part of NASA’s Living With a Star program to explore aspects of the Sun-Earth system that directly affect life and society.
The Living With a Star program is managed by the agency’s Goddard Space Flight Center in Greenbelt, Maryland, for NASA’s Science Mission Directorate in Washington. APL designed, built, and operates the spacecraft and manages the mission for NASA.
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