Visible light, which can be seen with our eyes, comprises a small sliver of the electromagnetic spectrum. The rest of the spectrum, from short wavelength gamma rays to long-wavelength radio waves, requires special instruments to detect. ALMA uses and array of radio telescopes to detect and study radio waves from space. Radio telescopes are typically large parabolic dish antennas used singly or in an array. Radio observatories are preferentially located...

"¿Cómo medimos el universo? ¿Dónde se halla el horizonte de sucesos? ¿Qué es la materia oscura? Desde los inicios de la humanidad, la gente ha alzado la vista al cielo con el afán de entenderlo. Así, a lo largo de los siglos, la ciencia astronómica ha ensanchado las fronteras del conocimiento humano en el intento de comprender el universo y nuestro lugar en él. Con un lenguaje claro, [esta libro] proporciona breves y sencillas explicaciones...

The Telescope Kit is a collection of supplies and information to facilitate stargazing.

"An introduction to the history of telescopes and space probes for primary and intermediate grade students with information about their features and use. Includes a list of highlights for each chapter, fun facts, glossary, resource list, and index"--

Tools to answer cosmic questions -- The first to see -- The era of the giants -- Radio telescopes : discovering the invisible universe -- Observing the violent universe : X-rays and gamma rays -- Hubble -- Peering into the future.

Simple text and photographs describe and illustrate how to use a telescope.

Can Doc fix a blurry-eyed telescope in time to see the meteor shower?

Takes viewers on a global adventure of discovery, dramatizing the inNovations in technology and the achievements in science that have marked the rich history of the telescope. Then Nova turns its attention to a new generation of ever-larger telescopes, poised to reveal answers to longstanding questions about our universe.