SALSA means "Such a lovely small antenna" (or in Swedish: "Sicken Attans Liten Söt Antenn") and refers to our small (2.3m) radio telescopes situated at Onsala Space Observatory in Sweden. Anyone may control these telescopes via internet for free. SALSA is a part of the European Hands-On Universe project, EU-HOU, to bring front-line interactive astronomy to the classroom. Most SALSA users observe emission from hydrogen in the spiral arms of our galaxy, the Milky Way. These observations can be done via your webbrowser during day-time as well as night-time, and even in bad weather. Using SALSA you can make a rough map of the spiral structure of our galaxy by yourself. You may also find evidence for dark matter! For more information on how to use the telescope, please see the documentation available at this page.