THelen2022

chronicles solar activity from Aug. 12 to Dec. 22, 2022, as captured by NASA’s Solar Dynamics Observatory (SDO). From its orbit in space around Earth, SDO has steadily imaged the Sun in 4K x 4K resolution for nearly 13 years. This information has enabled countless new discoveries about the workings of our closest star and how it influences the solar system. With a triad of instruments, SDO captures an image of the Sun every 0.75 seconds. The Atmospheric Imaging Assembly (AIA) instrument alone captures images every 12 seconds at 10 different wavelengths of light. This 133-day time lapse showcases photos taken at a wavelength of 17.1 nanometers, which is an extreme-ultraviolet wavelength that shows the Sun’s outermost atmospheric layer: the corona. Compiling images taken 108 seconds apart, the movie condenses 133 days, or about four months, of solar observations into 59 minutes.

On Dec. 5, NASA will air the lunar flyby of the Orion spacecraft on its return trek toward Earth. Orion completed a burn Dec. 1 to exit a lunar orbit thousands of miles beyond the Moon, where engineers have been testing systems to improve understanding of the spacecraft before future missions with astronauts. The return powered flyby burn, in which the spacecraft will harness the Moon’s gravity and accelerate back toward Earth, is expected at 11:43 a.m. (1643 UTC) The spacecraft is expected to fly about 79 miles above the lunar surface at 11:42 a.m. (16:42 UTC) just before the burn. Orion launched aboard the Space Launch System (SLS) rocket at 1:47 am EST (0647 UTC) on Nov. 16 from historic Launch Complex 39B at NASA’s Kennedy Space Center. Orion entered a distant retrograde orbit on at 4:52 p.m. EST (2152 UTC) on Nov. 25, where the spacecraft has been testing systems in a deep space environment. The Artemis I mission is the first integrated test of NASA’s deep space exploration systems: the Orion spacecraft, the SLS rocket, and Kennedy Space Center ground systems. More: https://www.nasa.gov/specials/artemis-i Credit: NASA