"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

NGC7635

DOUBLE BUBBLE ?

By ebfaulkner6a at Sun, 10/21/2012 - 6:14pm
DOUBLE BUBBLE ?

BUBBLE NEBULA: Emission Nebula in Cassiopeia at 7800 ly distance. The bright star at 2 o'clock in the Bubble is an O-type star nearing subernova stage and is the source of the Bubbles shape. You may also note that there is another Bubble which is 2 1/2 times larger and dimmer which stretches downward to the bright star near and to the left of image center. Aquired thru an AstroTech111edt refractor @ f/7, Nautilus Motorized Filter Wheel, Ha filter and SXVR-H9 ccd from Whiting, NJ 10-20-12 15 x 10 min exposures combined in Maxim DL, false color added.