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Meet the SpaceX Crew-7 astronauts launching to the ISS on Aug. 25
[ad_1] Four astronauts from four different countries will be on board the seventh operational...
How amateur astronomy has evolved in the past half-century
[ad_1] Hydrogen-alpha filters allowed amateurs to view a lot more on the Sun than just spots....
An Improved Radioisotope Thermoelectric Generator Could Dramatically Reduce The Weight Of Interplanetary Missions
[ad_1] Radioisotope thermoelectric generators (RTGs) are the power plants of the interplanetary...