The security and defence landscape is characterised by rapid change and evolving threats to global stability. The uncertainties of a complex geopolitical environment, with war on multiple fronts, are ...

A stunning "parade of planets" will grace the night sky this week, with all seven of Earth's celestial neighbors joining the show. Here's how to spot it and why it happens.

As the planets race around the Sun at different speeds, sometimes they line up on the same side of the Sun, appearing closely together in the night sky. The best time to see the planets will be ...

When the droplets and light waves are of similar size ... the color of the sky and appear bluish. Some of the most picturesque clouds occur close to sunrise and sunset when they can appear ...