Which spacecraft is the first ever to have "touched" the sun?

On December, 14, 2021, scientists announced that NASA's (National Aerospace and Space Adminstration) Parker Solar Probe became the first spacecraft to have "touched" the sun this April 2021, after reaching the sun's upper atmosphere, known as the corona.

60 years ago, NASA set a goal to reach the sun to answer fundamental questions about the center of the solar system. The Parker Solar Probe was launched on August 12, 2018, since then it's been orbiting the sun and inching closer with every loop. On April 28, 2021, during its eighth flyby of the Sun, Parker Solar Probe encountered the specific magnetic and particle conditions at 18.8 solar radii (around 8.1 million miles) above the solar surface that told scientists it had crossed the Alfvén critical surface for the first time and finally entered the solar atmosphere, which is the boundary between the sun's atmosphere and the start of solar wind, which are streams of charged particles that radiate from the corona and carry a magnetic field.

The probe is made of heat-tolerant chemicals like tungsten, niobium, molybdenum and sapphire to resist the sun's intense temperatures. The device is named after Eugene Newman Parker, born in June 10, 1927, is an American solar astrophysicist in the mid 1950 who developed the Theory of the super sonic solar wind and predicted the Parker spiral shape of the solar magnetic field in the outer Solar System. It is also the first ever mission of the agency that is named for a living person.