User talk:86.98.21.13

January 2018
Hello, I'm Cahk. I wanted to let you know that one or more of your recent contributions to Space exploration have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks. Cahk (talk) 10:03, 7 January 2018 (UTC)
 * If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.

Please refrain from making unconstructive edits to Wikipedia, as you did with this edit to Radio telescope. Your edits appear to constitute vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you. Wtmitchell (talk) (earlier Boracay Bill) 07:15, 10 January 2018 (UTC)