SpaceX's Polaris Dawn Crew Returns to Earth After Historic Spacewalk

"It is with great relief that I welcome you home!" SpaceX COO Gwynne Shotwell posted on X. "This mission was even more extraordinary than I anticipated." "SpaceX's Polaris Dawn crew is home," reports CNN, "capping off a five-day mission to orbit - which included the world's first commercial spacewalk - by splashing down in the Gulf of Mexico."The Crew Dragon capsule carrying four astronauts landed off the coast of Dry Tortugas, Florida, at 3:37 a.m. ET Sunday. The Polaris Dawn mission made history as it reached a higher altitude than any human has traveled in five decades. [870 miles (1,400 kilometers) - beating the 853-mile record set in 1966 by NASA's Gemini 11 mission.] A spacewalk conducted early Thursday morning also marked the first time such an endeavor has been completed by a privately funded and operated mis.sion. But returning to Earth is among the most dangerous stretches of any space mission. To safely reach home, the Crew Dragon capsule carried out what's called a "de-orbit burn," orienting itself as it prepared to slice through the thickest part of Earth's atmosphere. The spacecraft then reached extremely hot temperatures - up to 3,500 degrees Fahrenheit (1,900 degrees Celsius) - because of the pressure and friction caused by hitting the air while still traveling around 17,000 miles per hour (27,000 kilometers per hour). The crew, however, should have remained at comfortable temperatures, protected by the Crew Dragon's heat shield, which is located on the bottom of the 13-foot-wide (4-meter-wide) capsule.Dragging against the air began to slow the vehicle down before the Crew Dragon deployed parachutes that further decelerated its descent. Having hit the ocean, the spacecraft briefly bobbed around in the water until rescue crews waiting nearby hauled it out of the ocean and onto a special boat, referred to as the "Dragon's nest." Final safety checks took place there before the crew disembarked from the capsule and began the journey back to dry land. You can watch video of the splashdown on YouTube. While in space, the crew performed 40 science experiments and research, according to the article. "Gillis, a trained violinist, also brought her instrument along for the mission and delivered a rendition of 'Rey's Theme' from "Star Wars: The Force Awakens." (Slashdot reader SuperKendall points out that the "Rey's Theme" rendition "was not just the astronaut playing violin in space, but was in conjunction with young adult orchestras around the world.") SpaceX's COO said the performance "made me tear up. Thank you all for taking this journey."

Read more of this story at Slashdot.