Someone ___ China is rich in some resources, such as coal, oil, trees and so on. Some people even say “___ rich our country is!” But actually we ___ no coal or oil to use in one hundred years if we go on wasting. We really feel ___ about what we can use in the future...
This mount is usually used on Dobsonian telescopes. It provides good support for a heavy telescope, as well as smooth, frictionless motion. The movement of an alt-azimuth mount in relation to a star. Although the alt-azimuth mount is simple and easy to use, it does not properly track the...
The probe is currently orbiting the gas giant in an elliptical fashion, taking a route that brings it within about 2,600 miles (4,200 kilometers) of the tops of Jupiter's clouds. Juno has made some mind-boggling discoveries so far. For example, thanks to data it's collected, we now ...
Photo: Piston engine: One way to make lots of power, consistently, is to use lots of cylinders. This classic Bristol Jupiter piston engine has nine cylinders arranged at the center of a hub, like the spokes in a bicycle wheel, all pushing into a central crank. Known as a radial design...
How heavy he would feel he weighed in kg on Mars? Gravity on the surface of the moon is only 1/6 as strong as gravity on the Earth. What is the weight of a 24 kg object on the Earth? The acceleration of gravity is 10 m/s^2 . Suppose a person ...
Google Glassis a prime example of the current evolution of wearable technology. Glass is a computer in the form of a pair of eyeglasses and includes an optical head-mounted display. In short, Glass does a lot of the things that your smartphone can do. For instance, you can use a voice...
Eye-catching attributes on secondary pieces also help you create balance in the room so one wall doesn't appear too heavy. Just don't overdo secondary areas: Make sure a viewer can instantly perceive the focal point. When a room setting is appealing (restful yet interesting), it's usually...
The thrilling solar eclipse is soon. An expert gave us viewing tips. NASA rover finds damaged helicopter in the middle of Mars desert If a scary asteroid will actually strike Earth, here's how you'll know A graphic showing how charged particles from Jupiter can create oxygen on Europa's su...
which range from pack shakedowns to documentary-style journeys, are quietly inspirational—heavy on positivity and sunlight-drenched vistas. Spend just a few minutes on a virtual hike with Jupiter, and you’ll likely feel the urge to leave behind your 9-to-5 grind and follow in his footsteps...
Even in these mercurial days of e-mailed queries, electronic submission, and Hubble telescope photographs of far-flung celestial bodies (I’m a sucker for a nice snapshot of Jupiter), most agencies still prefer paper submissions. Heck, many still insist on mailed queries as well. Why? Well,...