NASA's Parker Solar Probe is out of contact with mission control after its closest-ever pass of the sun on Tuesday, Dec. 24.

NASA's pioneering Parker Solar Probe made history Tuesday, flying closer to the sun than any other spacecraft, with its heat shield exposed to scorching temperatures topping 1,700 degrees Fahrenheit (930 degrees Celsius).

The concept of touching the Sun can be traced back to the ancient Greek myth of Icarus, but scientists at NASA have turned that idea into a reality. On Dec. 24th, their Parker Solar Probe managed to travel to just within 3.