Our local star...

Our local star ... the sun, is just a bit more complicated than most people think.  The video at right, captured by the Solar Dynamics Observatory (SDO, a solar telescope in space), shows solar filaments warped by dynamic magnetic fields.

Many years ago I visited the Kitt Peak Observatory, mostly to get a glimpse of the McMath-Pierce solar telescope, still the largest instrument of its kind.  I remember flipping through a book of some of the photos it took – revolutionary at the time.  Today they seem primitive by comparison with the SDO's product.  Nevertheless, the McMath-Pierce telescope is still in active use; it's size and ability to change sensors keep it useful...