operator as-101 
AS - 101 ( also designated SA - 6 ) was the sixth flight of the Saturn I launch vehicle , which carried the first boilerplate Apollo spacecraft into low Earth orbit . The test took place on May 28 , 1964 , lasting for four orbits ( about six hours ) . The spacecraft and its upper stage completed a total of 54 orbits before reentering the atmosphere and crashing in the Pacific Ocean on June 1 , 1964 . The flight experienced a single anomaly : one of the eight first - stage Saturn I engines shut down early , but the guidance system compensated by burning the remaining seven engines longer . AS - 101 was followed by four more flights to verify the launch aerodynamics of the Apollo Command and Service Module and its Launch Escape System ( LES ) tower . The ___MASK27___ Ocean , also known as the Antarctic Ocean or the Austral Ocean , comprises the southernmost waters of the World Ocean , generally taken to be south of 60 ° S latitude and encircling Antarctica . As such , it is regarded as the fourth - largest of the five principal oceanic divisions : smaller than the Pacific , Atlantic , and Indian Oceans but larger than the Arctic Ocean . This ocean zone is where cold , northward flowing waters from the Antarctic mix with warmer subantarctic waters . The Pacific Ocean is the largest of the Earth ' s oceanic divisions . It extends from the Arctic Ocean in the north to the ___MASK27___ Ocean ( or , depending on definition , to Antarctica ) in the south and is bounded by Asia and ___MASK79___ in the west and the Americas in the east . An ocean ( the sea of classical antiquity ) is a body of saline water that composes much of a planet ' s hydrosphere . On Earth , an ocean is one of the major conventional divisions of the World Ocean , which covers almost 71 % of its surface . These are , in descending order by area , the Pacific , Atlantic , Indian , ___MASK27___ ( Antarctic ), and Arctic Oceans . The word " sea " is often used interchangeably with " ocean " in American English but , strictly speaking , a sea is a body of saline water ( generally a division of the world ocean ) partly or fully enclosed by land . ___MASK79___ , officially the Commonwealth of ___MASK79___ , is a country comprising the mainland of the Australian continent , the island of Tasmania and numerous smaller islands . It is the world ' s sixth - largest country by total area . The neighbouring countries are Papua New Guinea , Indonesia and East Timor to the north ; the Solomon Islands and Vanuatu to the north - east ; and New Zealand to the south - east . ___MASK79___ ' s capital is Canberra , and its largest urban area is Sydney . The Saturn IB ( pronounced " one B ", also known as the Uprated Saturn I ) was an American launch vehicle commissioned by the ___MASK67___ ( NASA ) for the Apollo program . It replaced the S - IV second stage of the Saturn I with the much more powerful S - IVB , able to launch a partially fueled Apollo Command / Service Module ( CSM ) or a fully fueled Lunar Module ( LM ) into low Earth orbit for early flight tests before the larger Saturn V needed for lunar flight was ready . The Saturn I ( pronounced " Saturn one ") was the United States ' first heavy - lift dedicated space launcher , a rocket designed specifically to launch large payloads into low Earth orbit . Most of the rocket ' s power came from a clustered lower stage consisting of tanks taken from older rocket designs strapped together to make a single large booster , leading critics to jokingly ___MASK36___ to it as " Cluster ' s Last Stand ". However , its design proved sound and very flexible . Its major successes were launching the Pegasus satellites and flight verification of the Apollo Command and Service Module aerodynamics in the launch phase . Originally intended as a near - universal military booster during the 1960s , it served only for a brief period and only with ___MASK49___ ; ten Saturn I rockets were flown before it was replaced by the derivative Saturn IB , which featured a more powerful upper stage and improved instrumentation . The Arctic ( or ) is a polar region located at the northernmost part of Earth . The Arctic consists of the Arctic Ocean , adjacent seas , and parts of Alaska ( United States ), ___MASK1___ , Finland , Greenland ( Denmark ), Iceland , Norway , Russia , and Sweden . Land within the Arctic region has seasonally varying snow and ice cover , with predominantly treeless permafrost - containing tundra . Arctic seas contain seasonal sea ice in many places . The Antarctic ( US English , UK English or and or ) is a polar region , specifically the region around the Earth ' s South Pole , opposite the Arctic region around the North Pole . The Antarctic comprises in the strict sense the continent of Antarctica and the island territories located on the Antarctic Plate . In a broader sense the Antarctic region include the ice shelves , waters , and island territories in the ___MASK27___ Ocean situated south of the Antarctic Convergence , a zone approximately wide varying in latitude seasonally . The region covers some 20 % of the ___MASK27___ Hemisphere , of which 5 . 5 % ( 14 million km ) is the surface area of the Antarctic continent itself . All of the land and ice shelves south of 60 ° S latitude are administrated under the Antarctic Treaty System . In a biogeographic sense , the Antarctic ecozone is one of eight ecozones of the Earth ' s land surface . The ___MASK67___ ( NASA ) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program as well as aeronautics and aerospace research . Antarctica ( US English , UK English or ) is Earth ' s southernmost continent . It contains the geographic South Pole and is situated in the Antarctic region of the ___MASK27___ Hemisphere , almost entirely south of the Antarctic Circle , and is surrounded by the ___MASK27___ Ocean . At , it is the fifth - largest continent . For comparison , Antarctica is nearly twice the size of ___MASK79___ . About 98 % of Antarctica is covered by ice that averages in thickness , which extends to all but the northernmost reaches of the Antarctic Peninsula .