Researchers at the Space Science Center of the University of New Hampshire found that the "speed bump" in space is much more complicated than originally thought, which can slow down satellites closer to the Earth. Mark Lejsal, a physicist at UNH University, said: We know that these satellites encounter "speed bumps" or "upwelling", which causes them to slow down and descend to a certain height. But in this mission, some mysteries about why this happened were solved by discovering that these protrusions are more complex and structured. In this study, published in AGU Geophysical Research Express, scientists summarized their observations in the Null 2 rocket experiment.

Finding an aurora borealis, or northern lights, is at least to some extent the reason why airbags move to high altitude, where they will cause resistance to passing satellites, just like driving a car in a strong headwind. These auroras observed from Norwegian Schell henriksen Observatory are not common bright bands in the night sky at high latitudes of the earth. These auroras are called polar shift auroras (PMAF). They are weak in energy, dim in light and far away. For a long time, scientists have suspected that the aurora may cause upwelling events affecting low-altitude satellites, because when they fly over the aurora, they will encounter a "space deceleration zone" caused by the warming of the upper thermal atmosphere.

However, because they occur at such a high altitude, these low-energy auroras transfer more energy to the thin atmosphere 250-400 km (150-250 miles) above the ground, and the effect is more interesting than the familiar aurora, which glows at a height of nearly 100 km (60 miles). It is conceivable that the satellite passes through bubbles like lava lamps instead of smooth waves. When the early space program put satellites into orbit for the first time, people noticed that the satellite orbit would deteriorate when the sun was active. The problem is that when the extra resistance slows down the satellites, they will approach the earth. If there is no extra fuel for them to fly again, they will eventually fall to the earth.

Rocket test of launching neutral upwelling 2(ENU2) in Norway.

These special satellites operating near the Earth are very important because they can take photos of the Earth and provide the latest information for climate monitoring, crop yield, urban planning, disaster response and even military intelligence. When the launch test of the ENU2 rocket is successful, the load passes through the cusp area in the neutral upwelling event, which is supported by a set of integrated airborne and ground instruments. The RENU2 data highlights two important processes. Firstly, a correct understanding of the polar motion aurora form of neutral upwelling requires a processing method to simulate a series of quasi-periodic passes of polar motion aurora form. When PMAF reaches the flux tube, the physical results must be determined.