Astrophysicist _______, who first theorized the existence of the solar wind in 1958, became the first living individual after which NASA named a Spacecraft.

Correct option is A

The correct answer is (a) Eugene Parker.
· Eugene Parker is the astrophysicist who first theorized the existence of the solar wind in 1958. In recognition of his groundbreaking work, NASA named the Parker Solar Probe after him in 2018, making him the first living individual to have a NASA spacecraft named in his honor.
Information Booster:
· Eugene Parker:
· Known for his work on solar physics, Parker's theory on solar wind has been fundamental in understanding the behavior of charged particles emitted by the sun.
· The Parker Solar Probe aims to study the outer corona of the Sun and the solar wind in detail.
· Elon Musk:
· CEO of SpaceX and Tesla, known for his contributions to space exploration and technology, but not directly involved in the theory of the solar wind.
· Johannes Kepler:
· A key figure in the 17th-century scientific revolution, known for his laws of planetary motion. The Kepler Space Telescope was named in his honor.
· Carl Sagan:
· Renowned astronomer and science communicator, known for his work on planetary science and popularizing science, but did not theorize the solar wind.