User talk:184.21.112.206

March 2018
Hello, I'm IronGargoyle. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to Radio astronomy— because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. IronGargoyle (talk) 01:55, 14 March 2018 (UTC)