The fantastically-colored star is our own sun as STEREO sees it in four wavelengths of extreme ultraviolet light. The black disk is the Moon.
— Stereo Eclipse (NASA)
A movie sequence shows the sun slowly turning from left to right, while the disc of the moon approaches from the left and crosses the face of the sun. Incredible.
The complex geometry on this wedge building took me all weekend. The interior walls still…
My older siblings say they remember our mother sitting them down to watch a new…
I played hooky to go see Wild Robot this afternoon, so I went back to…
I first started teaching with this handout in 1999 and posted it on my blog…