When and Where it Rains on the Sun SciShow News

The video explores the phenomenon of coronal rain on the sun, where superheated plasma follows magnetic field lines and cools, forming dense gas globs that fall back to the surface. This process is linked to the sun's complex magnetic fields and temperature differences. Research led by Emily Mason found coronal rain in smaller magnetic loops, challenging previous assumptions. The video also covers the NASA Twins Study, which examined the effects of spaceflight on astronaut Scott Kelly compared to his twin on Earth. The study found temporary changes in gut bacteria, cognitive function, and immune activity, with most effects reversing post-flight. However, some changes, like artery thickening, persisted, raising questions about long-term health risks for astronauts.

How did the lengthening of telomeres during spaceflight affect Scott Kelly's health upon his return to Earth?

What are the potential long-term health risks for astronauts based on the findings of the NASA Twins Study?

What future studies does NASA plan to conduct to further understand the effects of long-term spaceflight?