Parker Solar Probe Pushes into the Sun’s Shadow, Shield Protects the Mission
The Parker Solar Probe remains the fastest human-made object, zipping through the Sun’s corona at about 430,000 mph and protected by a 4.5-inch-thick carbon-foam heat shield; after seven Venus gravity assists it now sits in its closest solar orbit, operating autonomously and returning data on the corona and solar wind as NASA extends the mission beyond its original plan.