Sunita Williams set the record for the longest space flight by a woman in the year 2007.

Explanation:
Sunita Williams is a former NASA astronaut and United States Navy officer who holds several records for her time in space.

Longest Space Flight by a Woman:
In 2007, Sunita Williams set the record for the longest space flight by a woman. She spent a total of 195 days, 17 hours, and 1 minute on board the International Space Station (ISS). This record-breaking mission was part of Expedition 14 and Expedition 15.

Expedition 14 and 15:
Expedition 14 began on September 18, 2006, when Williams and two other crew members arrived at the ISS onboard the Soyuz TMA-9 spacecraft. During this expedition, Williams performed a spacewalk, becoming the third woman to do so. She also broke the previous record for the longest spacewalk by a woman, spending a total of 29 hours and 17 minutes outside the ISS.

Expedition 15 started on April 20, 2007, when Williams became the commander of the ISS as part of the handover from Expedition 14. She continued her stay on the ISS until her return to Earth on June 22, 2007. During her time on the ISS, Williams conducted various scientific experiments, maintenance tasks, and stayed connected with people on Earth through live video conferences.

Impact and Legacy:
Sunita Williams' record-setting space flight by a woman was a significant achievement in the field of space exploration. Her dedication, skills, and contributions to scientific research during her time on the ISS have inspired many, especially young girls, to pursue careers in STEM (Science, Technology, Engineering, and Mathematics) fields.

Conclusion:
Sunita Williams set the record for the longest space flight by a woman in the year 2007 during Expedition 14 and Expedition 15. Her accomplishments have left a lasting impact on the field of space exploration and have served as an inspiration for future generations.