The US Navy has made a groundbreaking leap in defense technology with the public demonstration of its new HELIOS laser weapon system, capable of shooting down drones and other threats at the speed ...

Derived from the Greek words peri (around) and helios (sun), the word reflects its meaning. In contrast, the term "aphelion" refers to the point where the orbiting body is farthest from the sun.

Jupiter, Mars, Saturn, and Venus will be visible to the naked eye or with binoculars. To see Neptune and Uranus, though, you'll need a telescope. To help visualize the event, note that Venus will ...

The slightly cheaper TS-L1640, which offer 16x magnification, will be $1,199.95. Using binoculars with more than 10x magnification without a tripod or stable support can result in blurred images ...