Tuesday, September 22, 2020

Autumnal Equinox: Fall Begins Tuesday Morning

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    This diagram shows the position of the Earth, in relation to the Sun, at the time of the Autumnal Equinox, as well as the other equino...
27 comments:
Friday, September 18, 2020

Mystery Solved! Oldest U.S. Planetarium Projector Found & Recovered

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                                1933 photograph of the Zeiss II Planetarium Projector used from 1930 to 1969 at the Adler Planetarium in ...
44 comments:
Tuesday, September 1, 2020

Astro-Calendar: 2020 Sept. / Sept. 2 Full Moon NOT Harvest Moon

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     This year, 2020, is one of the somewhat rare years (usually once every three years) when the September Full Moon, which occurs on Wedn...
108 comments:
Wednesday, August 26, 2020

1st U.S. Female Professional Astronomer: Leading Women's Suffragist

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                                                                  Photograph of Maria Mitchell (on left), circa 1877, in the Vassar College...
89 comments:
Monday, August 10, 2020

Annual Perseid Meteor Shower Peaks Tue. Night / Early Wed. Morning

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     A short, cropped video-clip of a Perseids meteoroid (at the bright head of the "shooting-star" trail) entering the Earth...
30 comments:
Thursday, August 6, 2020

Female Astrophysicist Helped Build 1st Atomic Bomb

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                                      Photograph of Leona Woods Marshall at the University of Chicago on 1946 December 2. (Image Sources: ...
45 comments:
Saturday, August 1, 2020

Astro-Calendar: 2020 August / 1st SpaceX Crew Dragon Splash-down Aug. 2

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NASA astronauts Robert Behnken and Douglas Hurley (shown during a pre-flight test on 2020 March 30) will return to Earth on the SpaceX Crew...
41 comments: