NASA dicit:
This visualization displays a simulation of the dust ring at Venus’s orbit around the Sun. Scientists hypothesize a group of never-before-detected asteroids orbiting the Sun with Venus are responsible for supplying Venus’s dust ring.
Video Credit: NASA’s Scientific Visualization Studio/Tom Bridgman
NASA dicit:
On the evening of March 6, 2019, the Moon started to transit the Sun, then doubled back and retraced its steps in the other direction — at least, that’s what it looked like from the perspective of NASA’s Solar Dynamics Observatory, or SDO, in orbit around Earth. The relative speeds and positions of the Moon, the Sun and NASA’s Solar Dynamics Observatory resulted in this unusual lunar transit where the Moon appears to pause and reverse course.
Video Credit: NASA
ULA dicit:
A United Launch Alliance (ULA) Delta IV rocket carrying the Air Force’s WGS-10 mission lifts off from Space Launch Complex-37 at Cape Canaveral Air Force Station, Florida, on March 15, 2019. ULA has been the exclusive launch provider for all ten WGS satellites.
Video Credit: ULA
Wikipedia dicit:
Expedition 59 is the 59th Expedition to the International Space Station, started on 14 March 2019 with the arrival of the Soyuz MS-12 spacecraft carrying Aleksey Ovchinin, Nick Hague and Christina Koch. Ovchinin and Hague were originally meant to fly to the ISS aboard Soyuz MS-10, but had to return minutes after takeoff due to an unforeseen anomaly. The three will subsequently transfer to the Expedition 60 crew, with Ovchinin as commander, after the undocking of the Soyuz MS-11 spacecraft, scheduled for July 2019.
Researchers on Expedition 59 will conduct experimentation on tissue chips because the microgravity environment can replicate the effects of aging and disease. The expedition will also conduct experiments on regolith stimulants and Earth’s atmospheric carbon cycle. Lastly, the expedition will also test Astrobee robots designed to conduct routine chores aboard the ISS.
Video Credit: Roscosmos
NASA dicit:
“NASA has successfully tested an advanced air-to-air photographic technology in flight, capturing the first-ever images of the interaction of shockwaves from two supersonic aircraft in flight. The images, originally monochromatic and shown here as composite colored images, were captured during the fourth phase of Air-to-Air Background Oriented Schlieren flights, or AirBOS, which took place at NASA’s Armstrong Flight Research Center in Edwards, California. The flight series saw successful testing of an upgraded imaging system capable of capturing high-quality images of shockwaves, rapid pressure changes which are produced when an aircraft flies faster than the speed of sound, or supersonic. Shockwaves produced by aircraft merge together as they travel through the atmosphere and are responsible for what is heard on the ground as a sonic boom.
The system will be used to capture data crucial to confirming the design of the agency’s X-59 Quiet SuperSonic Technology X-plane, or X-59 QueSST, which will fly supersonic, but will produce shockwaves in such a way that, instead of a loud sonic boom, only a quiet rumble may be heard. The ability to fly supersonic without a sonic boom may one day result in lifting current restrictions on supersonic flight over land.”
Video Credit: NASA Armstrong Flight Research Center
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