Bilingual blog about astronomy and science fiction. All my 400+ posts were gone due to a bug, probably. So, pls go to my other blog at: https://valentindivanov.wordpress.com/ or to the wayback machine at https://web.archive.org/web/20211103070429/https://valio98.blog.bg/ За моите книги/ For my books see: http://chitanka.info/person/valentin-ivanov https://wordpress.com/page/valentindivanov.wordpress.com/884 https://wordpress.com/page/valentindivanov.wordpress.com/1589