Dr. Phil Edwards, ISAS, Japan, Dr. R. Spencer, Jodrell Bank, UK, Dr. P. Colomer, Yebes, Spain, Dr. A. Baudry, Bordeaux Observatory, France, Dr. H. Bucher, NFRA, The Netherlands and Dr. R. Booth, Onsala Space Observatory, Sweden visited Metsähovi 9.5.2000.
Dr. G. DeZotti, University of Padova, Italy, visit to Metsähovi 23.2.2000. (Tornikoski)
Prof. A. Stepanov, Pulkovo Observatory, St Petersburg, Russia and prof. V. Zaitsev and prof. A. Kislyakov, Nizhny Novgorod State University, Russia, visited Metsähovi 28.9-7.10.2000.
Mr. Santiago Navarro, IRAM, Spain visited Metsähovi 3-7.10.2000.
Mr. David John, IRAM, Spain visited Metsähovi 7-12.11.2000.