http://metrocosm.com/history-of-cities/

The SAN FRANCISCO RADIO CLUB

The Answer

.............................

https://cneos.jpl.nasa.gov/fireballs/

Mark Twain's Martin Guitar

259

Six by Nine = 42

CELL PHONE PAGE

Hosting the Bay Area

 Making  Radio Waves

Comet Atlas

https://spaceweather.com/archive.php?view=1&day=26&month=05&year=2020

Meteoroid Environment Office

https://spaceweather.com/archive.php?view=1&day=02&month=04&year=2020

SFRC

2008--2024

https://www.bbc.com/news/science-environment-53429054

https://spaceweather.com/archive.php?view=1&day=19&month=09&year=2020

  42  Solved!

https://www.esa.int/Applications/Observing_the_Earth/Swarm/Swarm_helps_pinpoint_new_magnetic_north_for_smartphones

Newest Solar Telescope Image

https://www.cbsnews.com/news/sun-images-closest-ever-taken/

Click on Badge to ENTER

https://en.wikipedia.org/wiki/Boeing_X-37

https://www.sfchronicle.com/chronicle_vault/article/Archive-find-100-year-old-photos-of-Market-14974279.php