Video tour of the electromagnetic spectrum,
NASA Science Cast, YouTube (5:03 min)
Activity 3, ASKAP: why do we need another radio telescope?
Window to the universe, The Square Kilometre Array p 102, ska.edu.au (PDF) The original source for this resource no longer exists, this copy provided by the Internet Archive's Wayback Machine.
Giant telescopes of tomorrow,
NOVA, Public Broadcasting Service
Teachers’ Domain (4:50 min)
Viewing the universe: then, now and the future (Word, 330 KB)