271. What we know about extraterrestrial intelligence : foundations of xenology /: foundations of xenology. ([2017]) Authors: Ashkenazi, Michael Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗
272. When the Earth was flat : studies in Ancient Greek and Chinese cosmology /: studies in Ancient Greek and Chinese cosmology. (2018) Authors: Couprie, Dirk L, 1940- Record Type: Book Extent: 1 online resource (xxxi, 361 pages), illustrations (some color) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
273. Worlds Beyond Our Own : The Search for Habitable Planets /: The Search for Habitable Planets. (2014) Authors: Sengupta, Sujan Record Type: Book Extent: 1 online resource (154 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
274. X-ray Studies of the Central Engine in Active Galactic Nuclei with Suzaku. (2015) Authors: Noda, Hirofumi Record Type: Book Extent: 1 online resource (153 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
275. XCOR, developing the next generation spaceplane. ([2016]) Authors: Seedhouse, Erik Record Type: Book Extent: 1 online resource (xxi, 213 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
276. Zum Nachdenken : Unser Sonnensystem : Astronomische Aufgaben aus 35 Jahren Sterne und Weltraum /: Unser Sonnensystem : Astronomische Aufgaben aus 35 Jahren Sterne und Weltraum. (2017) Authors: Quetz, Axel M; Völker, Stefan Record Type: Book Extent: 1 online resource (369 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗