At 2:31 a.m. CDT on Sunday, Aug. 12, NASA’s Parker Solar Probe blasted off into the predawn darkness, on its way to explore the sun on a mission that will send it closer to our star than any previous spacecraft.
With its liftoff, University of Chicago Prof. Emeritus Eugene Parker became the first person to witness the launch of a namesake spacecraft. The Parker Space Probe is the first NASA mission named in honor of a living person.
“All I can say is wow, here we go,” said Parker, who is the S. Chandrasekhar Distinguished Service Professor Emeritus in Physics at UChicago. “[Now I] really have to turn from biting my nails … to thinking about all the interesting things which I don’t know yet. We’re in for some learning the next several years.”
Prof. Eugene Parker and his family watch the launch of the Parker Solar Probe on Aug. 12 from Cape Canaveral, Florida.
NASA said the honor befits the magnitude of Parker’s contributions to science. Parker’s revolutionary scientific career began with his 1958 proposal of the “solar wind,” which radically changed scientists’ understandings of the solar system.
He suggested, and later NASA missions confirmed, that the sun radiates an intense stream of charged particles that travel throughout the solar system at supersonic speeds. This is visible as the halo around the sun during an eclipse, and it can affect missions in space as well as satellite communication systems on Earth.
The discovery reshaped our view of space, stars and their surroundings. It also established a new field of astrophysics, leading NASA last year to name its newest and most ambitious mission to the sun after Parker as a tribute to his work.
“We’re so excited and proud that Eugene Parker’s namesake mission, the Parker Solar Probe, launched this morning,” said Angela Olinto, dean of the Division of the Physical Sciences at UChicago. “By first proposing the concept of the solar wind in 1958, Parker revolutionized our understanding of the solar system, and we eagerly await data from this mission that will help us continue to unravel the mysteries of our universe.”
Once it leaves Earth, the Parker Solar Probe will use seven flybys of Venus to slowly reduce its orbital distance and drop closer to the sun—eventually flying into the corona, facing searing temperatures of more than a million degrees Fahrenheit.
The data it collects will provide clues to explore the still-mysterious physics behind the sun—including questions first raised by Parker’s work a half-century ago, such as the nature of the mechanism that flings the solar wind off the sun.
Scientists around the world are eagerly awaiting the results, which will shed light on everything from the magnetic underpinnings of stars to the conditions that would await astronauts traveling to Mars to why the corona is so much hotter than the surface of the sun.
The Parker Solar Probe is the first NASA mission named after a living person: UChicago Prof. Emeritus Eugene Parker, in recognition of his discovery of the solar wind.