• Apr 10, 2026 – 00:07 UTC Orion splashed down in the Pacific Ocean approximately 50 miles off the coast of San Diego, completing the Artemis II mission. Atmospheric entry began at ~23:53 UTC (Apr 10), parachutes deployed at ~00:03 UTC, and the crew — Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen — was recovered by the USS John P. Murtha. The mission set a new record for the farthest distance humans have traveled from Earth: 252,756 miles, surpassing the Apollo 13 mark.

• Apr 9, 2026 – 13:00 UTC On Flight Day 9, the crew packed equipment, reviewed reentry and splashdown procedures, and prepared Orion for its final day in space. A Return Trajectory Correction Burn (RTC-2) — a 9-second firing of the reaction control thrusters — was performed at 01:53 UTC (Apr 10) to refine the spacecraft's Earth-return path. Splashdown confirmed on track for April 10 at 8:07 p.m. EDT.

• Apr 8, 2026 – 13:00 UTC On Flight Day 8, the crew conducted key tests on the return leg, including evaluation of the orthostatic intolerance garment designed to help maintain blood pressure during reentry, a flywheel exercise session, and review of Orion's attitude-control thruster modes (6-DOF and 3-DOF). The crew was 200,278 miles from Earth and 83,549 miles from the Moon at wakeup. A media conference with live Q&A from the crew was held in the evening.

• Apr 7, 2026 – 23:35 UTC After their historic lunar flyby on April 6, the Artemis II crew is awake and preparing for the journey back to Earth. The crew started the day 36,286 miles from the Moon and 236,022 miles from Earth.

• Apr 6, 2026 – 18:45 UTC
  Orion completed its closest approach to the Moon (~4 070 miles) during a ~7‑hour lunar observation window. The crew conducted targeted visual studies of 30 geological features, including Reiner Gamma, Glushko, the Orientale basin, and the Hertzsprung basin.

• Apr 5, 2026 – 14:47 UTC
  Orion completed final navigation checks and attitude adjustments ahead of tomorrow's lunar flyby. The crew conducted a live downlink session and reported all systems nominal. Distance to the Moon: approximately 12 000 km.

• Apr 4, 2026 – 18:33 UTC
  Orion continued outbound flight toward the Moon as the crew prepared for the lunar flyby scheduled for April 6. Orion's systems were nominal.

• Apr 3, 2026 – 04:10 UTC
  Orion completed the translunar injection burn and departed Earth orbit for the Moon.

• Apr 1, 2026 – 22:35 UTC
  Artemis II launched from Kennedy Space Center with Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen aboard Orion.

Source: NASA Artemis Blog

• In 1959, Arthur Samuel coined the term machine learning. In his paper, Some Studies in Machine Learning Using the Game of Checkers, he described it as "programming computers to learn from experience."
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