NASA's Parker Solar Probe broke records as it came closer to the sun than ever before, reaching an astonishing speed of 430,000 miles per hour. Equipped with groundbreaking technology, the Parker Solar Probe braves extreme temperatures to collect valuable data that has the potential to reshape our understanding of solar phenomena and even influence how we explore other stars.
The National Aeronautics and Space Administration (NASA) operations team has confirmed that the Parker Solar Probe's mission to "touch" the sun survived its record-breaking closest approach to the sun's surface, achieving a historic milestone on December 24, 2024.
Flying just 3.8 million miles from the sun's surface, the probe broke the previous record by traveling at an astonishing speed of 430,000 miles per hour, faster than any man-made object in history. The beacon signal received on December 26 confirmed that the spacecraft survived the fiery journey unscathed and continued to operate as expected.
This groundbreaking flyby is just the first planned flyby. By getting so close to the sun, the Parker Solar Probe can collect unprecedented data that promises to reshape our understanding of stars and their impact on the solar system.
"Flying so close to the sun is a historic moment for humanity's first stellar mission."
Nicky Fox, associate administrator of NASA's Science Mission Directorate
Flying close to the sun is a historic moment for mankind's first stellar mission," said Nicky Fox, director of the Science Mission Directorate at NASA Headquarters in Washington. "By studying the sun up close, we can better understand its impact on the entire solar system, including the impact on the technologies we use daily on Earth and in space. We can also understand the operation of stars throughout the universe, helping us search for habitable worlds beyond the earth. "
The Parker Solar Probe spent six years preparing for this moment. The Parker Solar Probe was launched in 2018. It has flown by Venus seven times and continues to approach the sun under the influence of gravity. With the final flyby of Venus on November 6, 2024, the spacecraft reached its optimal orbit. This elliptical orbit keeps the spacecraft at an ideal distance from the sun every three months—close enough to study the sun's mysterious processes, but not too close to be overwhelmed by the sun's heat and damaging radiation. The spacecraft will remain in this orbit for the remainder of its primary mission.
Nour Rawafi, Parker Solar Probe project scientist at the Johns Hopkins University Applied Physics Laboratory (APL), said: "Parker Solar Probe is bravely challenging one of the most extreme environments in space and exceeding all expectations. This mission has ushered in a new golden age of space exploration and brings us closer than ever before to unlocking the deepest and most enduring mysteries of the sun."
As it approaches the Sun, the spacecraft relies on a carbon foam shield to protect itself from the extremely high temperatures in the Sun's upper atmosphere called the corona, which can reach temperatures exceeding 1 million degrees Fahrenheit. The shield is designed to withstand temperatures up to 2,600 degrees Fahrenheit - hot enough to melt steel - while also keeping the instruments behind the shield at comfortable room temperature. In the hot but low-density corona, spacecraft shields are expected to heat up to 1,800 degrees Fahrenheit.
"Being able to get a spacecraft so close to the sun is monumental," said John Wirzburger, Parker Solar Probe mission systems engineer. "This is a challenge that the space science community has wanted to solve since 1958 and has spent decades advancing the technology to make it possible."
By flying in the corona, the Parker Solar Probe can make measurements that help scientists better understand how the region gets so hot, track the origin of the solar wind (the continuous flow of material escaping the sun), and discover how high-energy particles are accelerated to half the speed of light.
"This data is very important to the scientific community because it gives us another perspective," said Kelly Korreck, a solar physicist and project scientist at NASA Headquarters. "Parker Solar Probe has obtained first-hand information of what is happening in the solar atmosphere and completely changed our understanding of the sun."
Previous flights have helped scientists understand the sun. When the spacecraft first entered the Sun's atmosphere in 2021, it found that the outer boundaries of the corona were dotted with spikes and valleys, contrary to expectations. The Parker Solar Probe also pinpointed the origin of important zigzag structures in the solar wind, called gyres, on the sun's visible surface - the photosphere.
Since first entering the Sun, the spacecraft has spent longer in the corona, where most key physical processes occur.
"We now understand the solar wind and its acceleration away from the sun," said Adam Szabo, Parker Solar Probe mission scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. This close approach will give us more data about how it accelerates closer. "
The Parker Solar Probe has also made discoveries in the inner solar system. Observations show how giant solar explosions called coronal mass ejections pick up dust as they sweep across the solar system, while other observations reveal unexpected findings about the sun's energetic particles. A flyby of Venus recorded natural radio emissions from the planet's atmosphere, as well as the first complete images of its orbiting dust rings.
Prepare for your next encounter with the sun
So far, the spacecraft has only transmitted information that it is safe, but soon it will reach a position where it can downlink the data it collected during its most recent pass through the sun.
"The data uploaded from the spacecraft will be fresh information about places we humans have never been."
Joe Westlake, director of the Heliophysics Division at NASA Headquarters
The spacecraft is scheduled to conduct its next close exploration of the sun on March 22, 2025, and June 19, 2025.
NASA's Parker Solar Probe, a groundbreaking spacecraft designed to study the sun up close, made history as the first mission to "touch" our star. Launched in 2018, the Parker Solar Probe has traveled closer to the sun than any previous spacecraft, withstood extreme conditions and collected unprecedented data about the corona, the sources of the solar wind, and the mechanisms that drive high-energy particles. Parker used seven flybys of Venus to fine-tune its orbit, traveling at speeds of up to 430,000 miles per hour and braving temperatures exceeding 1,800 degrees Fahrenheit. Equipped with an advanced heat shield, the probe provides insights that transform our understanding of solar phenomena and their impact on the entire solar system, helping to develop technologies and models to protect Earth- and space-based assets.
Compiled from /scitechdaily