However, longer rides are more expensive and most commercial companies offer rides between 15 minutes and two hours. What is a hot air balloon used for? People ride in hot air balloons for recreational purposes to enjoy the view from above. Some hobbyists also like to participate in ...
NASA Knowledge rarely comes cheap. With its $100 billion cumulative price tag, the ISS is one of the most expensive undertakings in human history. And for years, financial considerations have raised questions about its long-term future. The ISS will continue to receive funding from participating...
Dual flush units are a little more expensive than other low flow toilet designs. There is also the problem of aesthetics. If you like a tidy toilet bowl that's half full of sparkling clear water, the dual flush concept will be a bit of an adjustment. Typically, dual flush toilets only ...
It is interesting how NASA(美国航空航天管理局)chose their astronauts for landing them on the moon. They chose men 1 the age of twenty and thirty-five. There were about fifty of them, Many were 2 air pilots. 3were scientists with two or three degrees. NASA telephoned each man they were...
Roughly 4 billion people still don't have access as of late 2015. Many live in areas where the infrastructure of the Internet hasn't yet reached, or where coverage is inadequate or prohibitively expensive. Google, famous for its many high-tech endeavors, has multiple projects in the works ...
It's expensive to build and maintain the bridge, even if the islands are close together. However, the need for a reliable, secure path is so great that you do it anyway. Your island would like to connect to yet another island that is much farther away but decides that the costs are ...
So, you're touring your gadget-loving neighbor's home, and first stop is the kitchen. Your eye wanders past several undoubtedly expensive but rather sensible innovations -- for example, energy-efficient slide-out freezers. But something else piques your interest -- a subtle blue glow emanating...
Getting anything into space is very expensive, as it requires the use of a rocket and huge amounts of fuel. During the days of the Space Shuttle Orbiter, the cost of getting 1 kg (2.2 lbs) of material into space was about USD 54,500. In comparison the Space-X Falcon 9 costs just ...
This is a major area of research in theoretical physics (such as quantum physics and cosmology). Tiny amounts of antimatter can be produced in particle accelerators, but it is expensive to produce. In "The Physics of Star Trek," Lawrence Krauss points out that it takes far more energy to...
These excursions are expensive (in the range of $10,000), but they are far cheaper than a ticket to space. Some balloon companies, like World View and Space Perspective, are working on private missions that will bring tourists to the edge of space. Seats on World View, for example, are...