https://peertube.dngr.us/videos/watch/fd53c95b-dadc-46a0-b423-d3daf2164854 Presents three parts on comets. Reveals that comets were born with the sun some 4.5 billion years ago but, unlike planets, the primitive ice and dust of coments have remained unchanged. Shows that they are windows into time, into the origins of the solar system. Defines comets and gives a historical account of them, including Halley’s comet in Part One. Looks at new studies investigating comets at short range, presently only from observations on Earth, but new space probes will allow the close – up study of comets. To license this film and get a higher quality version for broadcast/film purposes, contact A/V Geeks LLC . Date: 1981 Mirrored from Internet Archive: https://archive.org/details/comets_windows_into_time Wed, 15 Jul 2026 10:00:24 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/ec5edb1e-3795-4978-be4f-c67e98fbc992.png https://peertube.dngr.us/videos/watch/fd53c95b-dadc-46a0-b423-d3daf2164854 All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.