four planets grace morning sky may 9-12
Bookmarked 776 weeks ago
four of the five planets visible to the unaided eye huddle quite close together in the pre-dawn sky may 9-12 according to the editors of stardate magazine for complete information see: http:tinyurlcom3b2agc4published bi-monthly by the university of texas at austin mcdonald observatory stardate magazine provides readers with skywatching tips skymaps beautiful astronomical photos astronomy news and features and a 32-page sky almanac each january to subscribe: http:stardateorgmagazine

george saliba on the decline of islamic science
Bookmarked 530 weeks ago
george saliba is professor of arabic and islamic studies in the department of middle east and asian studies at columbia university he is the author of the book quotislamic science and the making of the european renaissance quotabout the book quotislamic science and the making of the european renaissance quot :-the islamic scientific tradition has been described many times in accounts of islamic civilization and general histories of science with most authors tracing its beginnings to the appropriation of ideas from other ancient civilizationsthe greeks in particular in this thought-provoking and original book george saliba argues that contrary to the generally accepted view the foundations of islamic scientific thought were laid well before greek sources were formally translated into arabic in the ninth century drawing on an account by the tenth-century intellectual historian ibn al-nadm that is ignored by most modern scholars saliba suggests that early translations from mainly persian and greek sources outlining elementary scientific ideas for the use of government departments were the impetus for the development of the islamic scientific tradition he argues further that there was an organic relationship between the islamic scientific thought that developed in later centuries and the science that came into being in europe during the renaissance saliba outlines the conventional accounts of islamic science then discusses their shortcomings and proposes an alternate narrative using astronomy as a template for understanding the progress of science in islamic civilization saliba demonstrates the originality of islamic scientific thought he details the innovations including new mathematical tools made by the islamic astronomers from the thirteenth to sixteenth centuries and offers evidence that copernicus could have known of and drawn on their work rather than viewing the rise and fall of islamic science from the often-narrated perspectives of politics and religion saliba focuses on the scientific production itself and the complex social economic and intellectual conditions that made it possible here are some endorsements for his bookquotgeorge saliba has for more than thirty years written some of the most original and advanced studies of the sciences in arabic in this remarkable book which he calls a historiographic essay he addresses the question of the origin of islamic science using accounts of early islamic scholars to show the essential roles of government bureaucracies the great enlargement of greek science particularly astronomy in the islamic world and new evidence for the paths of transmission of arabic science to europe shown most clearly in the work of copernicus finally saliba considers the so-called decline of arabic science showing that well into the fifteenth and even sixteenth centuries there was no decline but rather that the sciences of europe left behind the more traditional sciences not only of islamic civilization but of the entire world this is an essential book for understanding the place of science in the world of islam and its fundamental importance to the development of modern science in the western worldquot n m swerdlow department of astronomy and astrophysics the university of chicago quotsaliba039s book is essential reading for those who wish to understand the remarkable phenomenon of the 039rise039 and 039fall039 of the islamic scientific tradition his analysis takes place against the backdrop of the broader question of what produces scientific activity in a society what sustains it and enables it to flourish saliba039s singular achievement derives as much from the stimulating questions he raises as from his provocative answers his iconoclastic views will fuel scholarly debates for decades to comequot gl a russell department of humanities in medicine texas aampm university system health science center editor of the 039arabick039 interest of the natural philosophers in seventeenth-century englandhe is the author or editor of six other books in arabic and english

carl sagan on advanced civilizations visting earth
Bookmarked 790 weeks ago
would a technically advanced civilization visit the earth

live see the great conjunction christmas star of 2020 - youtube
Bookmarked 273 weeks ago
update 1221: skies are perfectly clear here in flagstaff arizona below is tonight039s great conjunction program schedule all times mst schedule subject t

how developments in nuclear fusion change everything neil degrasse tyson explains - youtube
Bookmarked 170 weeks ago
what is thermonuclear fusion neil degrasse tyson and chuck nice discuss the department of energyrsquos breakthrough in nuclear fusion and what it means for our

nasa afterschool universe: supernova ball bounce
Bookmarked 752 weeks ago
afterschool universe is an out-of-school-time astronomy program for middle school students that explores basic astronomy concepts through engaging hands-on activities and then takes participants on a journey through the universe beyond the solar systemthese videos are designed for instructors using the afterschool universe program they are designed to give a better understanding of the assembly technique and layout of some of the more complicated demonstrations this video is public domain and can be downloaded at: http:svsgsfcnasagovgoto10116like our videos subscribe to nasa039s goddard shorts hd podcast:http:svsgsfcnasagovvisitunesf0004_indexhtmlor find nasa goddard space flight center on facebook:http:wwwfacebookcomnasagsfcor find us on twitter:http:twittercomnasagoddard

magnetic reconnection and it039s associated problems
Bookmarked 782 weeks ago
http:fascistsoupcom20110322laymans-definition-of-magnetic-reconnection-and-why-it-doesnt-really-exist

hd moon flyover through 14quot telescope - youtube
Bookmarked 248 weeks ago
at a pretty impressive 200 meters per pixel this panorama of the battered lunar terminator shows features as small as a mile across including craters fault

flying to saturn: carolyn porco in lego
Bookmarked 727 weeks ago
planetary scientist carolyn porco - or rather her lego doppelgnger - takes you on a fascinating journey with cassini-huygens a space mission investigating saturn and its intriguing moons this stop-motion animation is a recreation of porco039s real-life presentation from the 2007 ted conference maia weinstock 2010

the hubble ultra deep field in 3d - youtube
Bookmarked 251 weeks ago
https:deepastronomyspacei039ve recently discovered an animation that was rendered using the measured redshift of all 10000 galaxies in the hubble ultra dee

neil de grasse tyson: we stopped dreaming
Bookmarked 712 weeks ago
donate if you like this channel039s content and want to see more: https:wwwpaypalcomuscgi-binwebscrcmd=_flowampampsession=lnj0mwyaif3ggexso3-5d3wuyvziwsrhtt7gn2-z0r0pu0reoyz3kd0guhiampampdispatch=5885d80a13c0db1f8e263663d3faee8d8494db9703d295b4a2116480ee01a05c

the history of the universe in 10 minutes
Bookmarked 724 weeks ago
a brief history of the universe from the big bang to the origin of mankind created and reuploaded with permission of upprunitegundanna check out his channel for more amazing videos http:wwwyoutubecomuserupprunitegundannavideosbig bang: http:enwikipediaorgwikibig_bangstellar nucleosynthesis: http:enwikipediaorgwikistellar_nucleosynthesissupernova: http:enwikipediaorgwikisupernovasupernova nucleosynthesis: http:enwikipediaorgwikisupernova_nucleosynthesisprotoplanetary disk: http:enwikipediaorgwikiprotoplanetary_disklate heavy bombardment: http:enwikipediaorgwikilate_heavy_bombardmentabiogenesis: http:enwikipediaorgwikiabiogenesisextinction events on earth: http:enwikipediaorgwikiextinction_eventcretaceous--tertiary extinction event: http:enwikipediaorgwikicretaceouse28093tertiary_extinction_eventevolution: http:enwikipediaorgwikievolutionquotlife is but a momentary glimpse of the wonder of this astonishing universe and it is sad to see so many dreaming it away on spiritual fantasyquot - carl saganmusic:lower your eyelids to die with the sun teen angst - m83copyright disclaimer under section 107 of the copyright act 1976 allowance is made for quotfair usequot for purposes such as criticism comment news reporting teaching scholarship and research fair use is a use permitted by copyright statute that might otherwise be infringing non-profit educational or personal use tips the balance in favor of fair use all copyrighted materials contained herein belong to their respective copyright holders i do not claim ownership over any of these materials i realize no profit monetary or otherwise from the exhibition of these videos

messier objects - deep sky videos
Bookmarked 739 weeks ago
charles messier039s quotanti-list039 of objects in space has become iconic in the world of astronomy we039ll making videos about each object - but first here039s an introduction to the catalogue itselfimage credits with thanks:bob fera: http:wwwferaphotographycom - philip perkins: wwwastrocruisecom - nik szymanek: http:ccdlandnet - roy grettondeep sky videos website: http:wwwdeepskyvideoscomtwitter: https:twittercomdeepskyvideosfacebook: http:wwwfacebookcomdeepskyvideosflickr: http:wwwflickrcomphotos68847473n02more about the astronomers in our videos: http:wwwdeepskyvideoscompagescontributorshtml

the milky way: crash course astronomy 37
Bookmarked 542 weeks ago
today were talking about our galactic neighborhood: the milky way its a disk galaxy a collection of dust gas and hundreds of billions of stars with the sun located about halfway out from the center the disk has grand spiral patterns in it formed by the traffic jams of stars and nebulae where stars are born the central region is shaped like a bar and is mostly old red stars theres also a halo surrounding us of old starscrash course astronomy poster: http:storedftbacomproductscrashcourse-astronomy-poster--table of contentsmilky way is a disc 2:54grand spiral patterns 4:21the central region is bar shaped 7:48outer halo of old stars 9:09--pbs digital studios: http:youtubecompbsdigitalstudiosfollow phil on twitter: https:twittercombadastronomerwant to find crash course elsewhere on the internetfacebook - http:wwwfacebookcomyoutubecrashcoursetwitter - http:wwwtwittercomthecrashcoursetumblr - http:thecrashcoursetumblrcom support crashcourse on patreon: http:wwwpatreoncomcrashcourse--photosvideosmilky way artists drawing http:wwwnasagovmission_pagesspitzermultimedia20080603ahtml credit: nasajpl-caltechjoshua tree http:deepskycolorscomastro2013042013-04_joshuatree_mwjpg credit: rogelio bernal andreomilky way center region mosaic http:sguisardastrosurfcompagimgchtml credit: esonew hubble image of star cluster messier 15 http:wwwspacetelescopeorgimagesheic1321a credit: nasa esaartists impression of the milky way http:wwwspacetelescopeorgvideoshubblecast70b credit: esahubble and m kornmesserm83 hubble only and hubble-subaru-eso composite http:wwwrobgendlerastropicscomm83-new-hsthtml credit: robert gendler 82 meter subaru telescope naoj european southern observatories hubble legacy archivehubble039s largest galaxy portrait offers a new high-definition view http:hubblesiteorgnewscenterarchivereleases200610imagea credit: nasa esa k kuntz jhu f bresolin university of hawaii j trauger jet propulsion lab j mould noao y-h chu university of illinois urbana and stscingc 3344 http:skycenterarizonaedugallerygalaxiesngc3344 credit: adam blockmount lemmon skycenteruniversity of arizonaannotated milky way http:wwwjplnasagovimageswise20150603spitzer20150603jpg credit: nasajpl-caltechblack hole with corona x-ray source artist039s concept https:enwikipediaorgwikiblack_holemediafile:black_holes_-_monsters_in_spacejpg credit: nasajpl-caltecha galaxy and its halo http:wwwesaintspaceinimagesimages200806a_galaxy_and_its_halo credit: esa image by c carreauhow to become a star http:wwwesoorgpublicimageseso0102a credit: eso

a brief history of time 1991 - full hd movie for free hdbestnet
Bookmarked 363 weeks ago
storyline:unlike the book this film is really an anecdotal biography of stephen hawking clips of his lectures interviews with friends and family and a little physics are thrown together written by jim sadur ltjsadurkeyfluxcomgtuser reviews: as a physicist talk about blackholes and cosmology gets my heart racing however i found this presentation too slow and