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Keldura Daily · Science & Space

Ancient Mars, station power, and Earth's magnetic boundary

Three stories connect new measurements and hands-on engineering to bigger questions: what water did on early Mars, how to sustain an aging space station, and where solar energy enters Earth's magnetic shield.

The field note

2 sources · 2 items
  1. The upgrade supplements rather than removes the original hardware: the new array extends over about half of a l…
  2. The reported 20%–30% power increase describes the combined upgrade system, not the contribution of this single…
  3. This was the second-to-last upgraded array, leaving one more in the installation sequence described by the repo…
Story 012 sources

Astronauts deploy another solar array to bolster ISS power

NASA astronaut Anil Menon and Canadian Space Agency astronaut Joshua Kutryk installed and deployed the second-to-last upgraded ISS solar array during the station's 100th U.S. spacewalk. The work targeted the 2A electrical power channel, adding to an upgrade program whose new arrays operate alongside the station's aging original panels. [2][9]

Why it matters

The station's eight original arrays have exceeded their 15-year design life and are producing less power. Operating the roll-out arrays alongside the older panels has increased the station's power supply by 20% to 30%, helping compensate for that degradation. [2]

Key insights

  • The upgrade supplements rather than removes the original hardware: the new array extends over about half of a larger legacy panel. [2]
  • The reported 20%–30% power increase describes the combined upgrade system, not the contribution of this single newly installed array. [2]
  • This was the second-to-last upgraded array, leaving one more in the installation sequence described by the report. [2]

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