- 3515 - ISS - International Space Station after 21 years! The International Space Station has 21 years of operation, the orbiting lab has hosted more than 3,000 scientific experiments aimed at helping improve life back on Earth and enabling exploration farther into the solar system. Thousands of scientific papers have been published from this work.
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--------------------- 3515 - ISS - International Space Station after 21 years!
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- Here is some of what we learned:
- Electrostatic forces affect how particles aggregate or clump together in microgravity. These observations provide insights into the early stages of how stardust became intermediate-sized particles that eventually aggregated into planets, moons, and other objects in our solar system.
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- Chondrules are tiny, sphere-like particles found in meteorites and asteroids. One theory for how they formed is that in the early nebula or interstellar cloud that eventually became our solar system, lightning agitated dust particles and provided the energy needed for them to clump into chondrules.
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- Researchers exposed aggregations of free-floating particles to electric fields and low- and high-energy electric discharges. Nearly all the particles formed compact aggregates during increased electric field strengths. Electric fields also led to reduced “porosity”, or fewer open spaces in the aggregates, an important process in the evolution of the precursors to planet formation.
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- Another thing we learned was that the spin and mass of blackholes underestimated spin and overestimated mass for an observed blackhole. Blackholes are a critical part of the formation and evolution of galaxies.
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- Neutron stars, the glowing cinders left behind when massive stars explode as supernovas, emit X-ray radiation that scientists can use to examine their structure, dynamics, and energies. These X-rays do not penetrate the Earth's atmosphere.
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- NASA's NICER is a telescope mounted on the outside of the space station to capture X-ray radiation and provide new insights into the nature and behavior of neutron stars. Scientists used data from NICER to chart the environment around a blackhole, MAXI J1820+070.
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- These data was used to determine the blackhole's radius and spin and explain the “Relativistic Precession Model’ (RPM). This model is used for determining spin and mass for a blackhole and may need refining based on these findings.
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- The earliest space travelers. Complex amino acid precursors of life can withstand the harsh conditions of space. This finding supports ‘panspermia“, a theory that life originated on Earth when microorganisms or chemical precursors of life hitched interplanetary rides here on dust particles or micrometeorites.
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- Amino acids are molecules that combine to form proteins, the building blocks of life. Complex amino acids have been discovered in molecular clouds, nearby young stars, and inside meteorites and cosmic dust, which supports the panspermia theory.
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- The theory only holds if these life forms could survive in space long enough to reach Earth. The study from JAXA exposed several types of amino acids in space on the outside of station to see how they handled the harsh environment.
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March 24, 2022 ISS - International Space Station after 21 years! 3513
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--------------------- --- Thursday, March 24, 2022 ---------------------------
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