το φως ειναι ηλεκτρομαγνητικο κυμα και δεν χρειαζεται καποιο μεσο για να διαδοθει.Ετσι μπορει και διαδιδεται στο κενο. Αλλα κυματα .οπως τα μηχανικα (ηχος ) χρειαζονται μεσο. Απο οσα γνωριζω οι διαστημικοι σταθμοι επικοινωνουν στελνοντας ραδιοκυματα στη Γη.
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το φως ειναι ηλεκτρομαγνητικο κυμα και δεν χρειαζεται καποιο μεσο για να διαδοθει.Ετσι μπορει και διαδιδεται στο κενο. Αλλα κυματα .οπως τα μηχανικα (ηχος ) χρειαζονται μεσο. Απο οσα γνωριζω οι διαστημικοι σταθμοι επικοινωνουν στελνοντας ραδιοκυματα στη Γη.