What can potentially be harmed by solar flares?

Solar flares can have a significant impact on various systems and entities beyond just astronauts in space. When emitted from the sun, solar flares release a burst of radiation and charged particles that can disrupt satellite operations, affecting their functionality and possibly leading to communication failures or navigation errors. Additionally, solar flares can interfere with ground systems, including power grids and radio transmissions, potentially causing widespread outages and technical difficulties.

Spacecraft in low Earth orbit are also at risk, as increased levels of radiation can pose a threat to onboard electronics and could even compromise the safety of personnel aboard. Therefore, the correct answer encompasses all these elements, highlighting that not only astronauts but also satellites, ground systems, and spacecraft may face harm due to solar flares. This indicates a broader understanding of the potential consequences posed by solar activity on our technological infrastructure and human activities in space.