Solar cycle
HoldTechniques
The roughly 11-year periodic variation in the Sun’s activity and emissions.
Why it's here
Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.
Evidence (1)
- 4Hacker News·8/21/2026researchStudy finds Hubble’s radiation damage is out of phase with the solar cycle
A recent arXiv paper reports that radiation damage patterns in the Hubble Space Telescope have been offset from the solar cycle by about 4.3 years. The result suggests the telescope’s degradation is influenced by delayed or indirect effects rather than tracking solar activity in lockstep.