243 miles (2,000 kilometers) to 22,223 miles (36,000 kilometers). Navigation satellites, like the kind used by your car's GPS, work well at this altitude. Sample specs for such a satellite might be an altitude of miles (20,200 kilometers) and an orbital speed of 8,637 mph (13,...
Most public transport within the city is on its distinctive blue-and-white trams. Many of the 15 lines converge on Amsterdam Centraal Station. In areas with fewer trams, the gaps are filled by buses (all will be electric by 2030). Amsterdam also has five metro lines extending to the outer...
While Kepler's idea of a solar wind has been disproven, scientists have since discovered that sunlight does exert enough force to move objects. To take advantage of this force, NASA has been experimenting with giant solar sails that could be pushed through the cosmos by light. There are ...
ride on the Parker Solar Probe and take it on a detour from its sun-focused mission to travel in a straight line from Earth to Mars, traveling at the speeds the probe reaches during its 22nd solar flyby 430,000 mph (692,000 kph), the time it would take you to get to Mars would ...
An airplane traveling 600 mph (965 km/h) would take 1 million years to travel a single light-year! If we could travel one light-year using a crewed spacecraft like the Apollo lunar module, the journey would take approximately 27,000 years, according to theBBC Sky at Night Magazine. ...
Hmmmph. Next month Nicki and Jill would each give birth to their first child. Until then, they would have all the answers. “Help me up,” Jill said to Nicki. “I gotta go pee.” “Great. Now you got my bladder thinking it has to go pee, too.” ...
Theoretically, walking the circumference of the moon could be done faster than previously predicted. Picking up the pace During the Apollo missions, astronauts bounced around the surface at a casual 1.4 mph (2.2 km/h), according to NASA. This slow speed was mainly due to their clunky, ...
The distance from the sun to the earth is {eq}1.496 \times 10^8 {/eq} km. How long does it take light to travel from the sun to the earth? Speed of Light: The speed of light is the universal speed limit. Nothing can move fa...
Depending on the country and the local laws, electrically-powered bicycles usually have a maximum assisted speed between 15 mph and 28 mph. Electric-assist bicycles usually have power or cadence sensors which allows them to gauge how much power to supplement the rider with, depending on how FAST...
NASA began design, cost and engineering studies on a space shuttle and many aerospace companies also explored the concepts. In 1972, President Nixon announced that NASA would develop a reusable space shuttle or space transportation system (STS). NASA decided that the shuttle would consist of an ...