
The Parker Solar Probe is still flying through the Sun's corona at 430,000 miles per hour, fast enough to cross the continental United States in about 20 seconds, because a 4.5-inch carbon-foam shield keeps the spacecraft in the shade - Space Daily
NASA's Parker Solar Probe is the fastest object ever built, flying through the Sun's corona at 430,000 mph while a 4.5-inch carbon foam shield keeps its instruments at room temperature against 2,500-degree heat.






