"Professor Goddard does not know the relation between action and reaction and the need to have something better than a vacuum against which to react. He seems to lack the basic knowledge ladled out daily in high schools."
--1921 New York Times editorial about Robert Goddard's revolutionary rocket work.

"Correction: It is now definitely established that a rocket can function in a vacuum. The 'Times' regrets the error."
NY Times, July 1969.

— New York Times


Jupiter this September evening shot through H-alpha narrowband filter.
Prime focus through C-11. Combination of 220 exposures of 0.3 seconds each.
In the seventy seconds or so of the exposure, the moons Ganimede, Europa (Jupiter) and Io moved enough to show visible trailing.


Yes, it is very nice. And

Yes, it is very nice. And the image is only a few days old. I was just outside observing Jupiter myself. So what I saw in the scope was very similar to you imaged, just not as detailed. Capturing the details is the beauty of astro imaging.


..waiting for the color version ;)

Yes, I agree. It is

Yes, I agree. It is gorgeous !