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On January sixteenth, nineteen sixty-nine, Yevgeni Khrunov and Alexei Yeliseyev crossed from Soyuz Five to Soyuz Four during a spacewalk. The spacecraft had docked to demonstrate movement between vehicles in orbit, and the mission also rehearsed elements of the Soviet piloted lunar plan. Together, t...
ViewScience Applications International Corporation (SAIC) developed its Mars mission study for NASA’s Office of Exploration from January to November 1987. Its proposed piloted missions would take **about one year round trip**, spend **30 to 45 days near Mars**, and include **10-to-20-day surface excursi...
ViewAn imagined waterside garden, where turquoise water slips past sunlit tile into a pocket of green. Ripples gather the sky above a cool, clear depth. /media/ai_images/0b1fe0cd-f927-4574-b370-2444161d5169.png...
ViewScotland's Falkirk Wheel carries boats between waterways in two water-filled chambers. One rises as the other falls. But why doesn't a boat upset the balance? A floating boat displaces its own weight in water. As it enters an open chamber, that much water moves out into the canal. With water levels ...
ViewCricut cutting machines in 2026: Joy Xtra, Explore 5 or Maker 5? Choose for the projects you will make repeatedly, with the bundle contents and extra tools in view. Buying guide · Researched September 27, 2026. Prices, where shown, are USD before tax and delivery; stock and regional availability var...
ViewAt Salyut 7, the space station, crews worked from an exterior platform mounted on Progress 20 and carried about 40 kilograms of tools. Repeated work on the propulsion system’s oxidizer piping, which carries oxidizer, did not stop the leak; nitrogen checks still detected it. The VE-4 crew delivered a...
ViewIn 1783, as thousands of Black Loyalists sought safe passage from New York to British territories following the American Revolutionary War, British and American officers compiled an administrative register known as the Book of Negroes. Created to administer a large-scale maritime evacuation, the doc...
ViewIn Yorkshire, some rhubarb grows in dark sheds, then is traditionally harvested by candlelight. Darkness isn't its fuel. The secret is underground. For two to three years outdoors, its leaves use sunlight to build food reserves in the roots. After winter chilling, the crowns move into warm sheds wit...
View[00:53] The Forgotten 1798 Origin of the US Public Health Service [03:09] A 1930s Surgeon General on Preventing National Epidemics [05:07] How Modern Transportation Accelerated Contagion [06:41] Quarantine Officers Intercepting Ships at Sea [14:19] How Airlines Quarantined Yellow Fever in the 1930s ...
ViewAn imagined public artwork: tall glass reeds shift their arrangement as the wind passes, casting moving colours across the ground and nearby surfaces. /media/ai_images/26803fdb-537d-4f4a-b855-8d2958eb01b4.png...
ViewIn *The World of Wonders*, the account is explicitly attributed to Humboldt’s *Travels in South America*. It leads a first-time reader along a riverbed through a green valley to a cave mouth described as an arch more than seventy feet high. Vegetation fringes the river at the entrance, then thins as...
View[04:08] Striking Oil from a Golf Bunker [05:53] Teeing Up on Giant Stilts [07:01] The Best Golf Course Divot Ever Tasted [07:30] The Worst Golf Lesson in History [10:43] The $10,000 Golf Bet Escalation [13:24] You Cannot Hit Them From Memory [14:03] Playing From the Water Hazard [14:51] The Mystery ...
ViewFrom certain places on Mercury, the Sun can rise, sink below the horizon, then rise again. The trick is a slow spin and an oval-shaped orbit. Mercury turns once in about fifty-nine Earth days, while a trip around the Sun takes about eighty-eight. Near its closest approach, Mercury sweeps around the ...
View[00:54.000] The Flagpole Base of USS Arizona [02:25.500] Preserved Teak Wood Beneath Pearl Harbor [03:44] Where Pearl Harbor Survivors Return to Rest [06:43] Galley Tiles from December 7, 1941 [08:13] The Forgotten 14-Inch Cannons Underwater [09:56] Touching the Bow of the USS Arizona...
ViewThose two dark spots above its mouth look like eyes, but they actually detect smells. The real eyes are the green shapes inside that clear, fluid-filled dome. They point upward, spotting faint silhouettes of food against the light from above. But when the fish feeds, its eyes rotate forward, keeping...
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