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The SubOrbital Express-4 sounding rocket launched successfully from Sweden's Esrange Space Center near Kiruna at 06:00 CET yesterday, achieving a peak altitude of 256 kilometers. The mission provided approximately six minutes of microgravity for six onboard scientific experiments before returning to Earth.
Challenging weather conditions overnight added suspense to the highly anticipated la 
by Erica Marchand
Paris, France (SPX) Nov 28, 2024
The SubOrbital Express-4 sounding rocket launched successfully from Sweden's Esrange Space Center near Kiruna at 06:00 CET yesterday, achieving a peak altitude of 256 kilometers. The mission provided approximately six minutes of microgravity for six onboard scientific experiments before returning to Earth.
Challenging weather conditions overnight added suspense to the highly anticipated launch, which included three European Space Agency (ESA) experiments. These studies spanned diverse areas, from immune system analysis to advanced solar cell production and investigations into the Universe's formation, all aboard the Swedish Space Corporation (SSC) rocket.
Shared Microgravity Access for Research
The rocket's payload was retrieved promptly by helicopter after landing. The collected data will now undergo detailed analysis by researchers in Sweden, Germany, and Finland, marking the culmination of over two years of meticulous preparation.
"Sounding rockets bridge the gap between laboratory research and the complexities of orbital missions, enabling us to test new technologies, gather critical data, and inspire innovative solutions," said Daniel Neuenschwander, ESA's Director of Human and Robotic Exploration. Reflecting on the potential of Esrange for future endeavors, he highlighted its role in advancing space exploration.
"Sometimes, a few minutes of microgravity is just what a research project needs to reach the next level, often resulting in great discoveries for humanity," added Krister Sjolander, SSC's Head of Payloads and Flight Systems. He noted that prior SubOrbital Express missions had yielded experiments later carried to the International Space Station, including diabetes research conducted during ESA astronaut Marcus Wandt's Muninn mission.
SubOrbital Express-4 represents the latest in the MASER rocket series, a program initiated at Esrange in 1987.
MicACTin: Immune System Insights
MicACTin, developed by Sweden's Karolinska Institutet, studies the effects of microgravity on T cells-essential components of the immune system. The experiment exposed 32 containers of these cells to microgravity, while a centrifuge maintained another 16 containers under normal Earth-like conditions for comparison.
This research aims to understand how weightlessness impacts immune function, with potential applications for astronaut health on extended missions and novel treatments to enhance immune responses for patients on Earth.
LiFiCo: Solar Cell Advancements
LiFiCo, led by Karlstad University in Sweden, focuses on crafting sustainable solar cells by observing the microstructure of liquid coatings applied to glass substrates during microgravity. Scientists captured the exact moment the coating formed in the weightless environment, providing insights into producing highly efficient solar energy solutions.
JACKS: Behavior of Granular Gases
JACKS, a materials science experiment, examines granular gases to understand how they behave in microgravity. Using bouncing hexapod shapes in a confined container, the experiment simulates granular systems found in celestial bodies, such as asteroids and planetary rings. The data collected on energy and heat transfer could have broad applications in both space exploration and Earth-based research.
Related Links
Human and Robotic Exploration at ESA
Rocket Science News at Space-Travel.Com