This blog straddles two names and domains: Common Themes (themes.common-space.net; July 2006 – October 2009) and Silver Rockets (silver-rockets.com; October 2009 to present).
Common Themes was launched in July 2006, intending to explore (editorially) the effects of space and spaceflight on culture and society. In 2009, after much contemplation of a gradual shift in focus, and the subjects frequently revisited, the site was rebranded to better embrace the fantastic aspects of spaceflight, as well as the realities.
Danielle Signor is a web designer and social media consultant living in far-northern California, and is very starry-eyed indeed. She also blogs at ManyFaceted.com.
A little about me: I decided to become an astronaut at age five, after watching the “3-2-1 Contact” special where Paco went to Space Camp. When I was fifteen, I went to Space Camp, and it was everything I’d dreamt of for ten years, and a lot more!
In college, I was a Lunar & Planetary Institute summer intern; I mapped part of the lunar nearside using Clementine data, under the direction of Dr. Paul Spudis (the Moon’s finest advocate, as far as I’m concerned.) After college I ended up on a different path, and parted ways with the astronaut idea.
I love the Apollo program, and I’m crazy about the Moon. My blog is an outlet for my enthusiasm for human spaceflight, and space exploration in general. (And pretty space pictures.)
— Reprinted from Pars3c interview, September 10, 2010
Disclosure Policy
The FTC seems to think that, by virtue of being a blogger, I’m sneakily sneaking ads and profits onto every post I write, and rolling in millions of revenue dollars that I haven’t rightfully earned. I feel deprived by the FTC, and hope they will send me these ill-gotten millions so I can roll in them post-haste.
The truth is, I make nearly NOTHING off this blog — but to be a nice, compliant individual, I need to tell you that I am an Amazon.com affiliate, and earn a
miniscule amount of money through purchases made on this website. (And by miniscule, I mean, maybe $20 since 2006. Maybe.) I also use Google AdSense, which means I may hit the payout minimum in 5-10 years. We’ll see.
I am also required to tell you that I once received a review copy of a book for free, and reviewed it. I didn’t like it, and I said so. If you want to send me free stuff to review, I can’t guarantee I’ll give you a good review — it sorta depends on whether I like the thing or not!
Mostly, the products I review I’ve only seen online — if I own them I’ll say so. If I’m given one for purposes of review, or I’m benefiting in some way by posting, I’ll tell you that too. Anything I feature here is featured because I like it, or I want it, or I purchased it recently, or it’s awesome and I wish I could have it, but it’s impossible. I’d never feature something, either here or on Twitter, that I don’t actually like.
In closing, I post things here because I like them, not because I’m paid to do so.

This blog celebrates space exploration, human spaceflight and the heavens, through
My name is 


