More than half a million pieces of man-made space junk are orbiting the earth at speeds up to 17,500 miles per hour.
Earth
Aviation
Opinion: where’s my green seat?
Being an eco-warrior these days is not easy, especially if you’re an expat in Dubai and flying is a way of life, but small changes can have a big impact
Aerospace
Video: Who owns the Moon?
50 years after the first Moon landing, humanity is getting ready to go back. Countries and companies are planning dozens of lunar missions-for research, for resources and even for tourism, which begs the question: who, if anyone, owns the Moon?
astronomers
Gallery: Century’s longest ‘blood moon’ lunar eclipse dazzled sky gazers across the globe
The longest “blood moon” eclipse this century on Friday, coinciding with Mars’ closest approach in 15 years to treat sky gazers across the globe to a thrilling celestial spectacle. A total lunar eclipse happens when Earth takes position in a straight line between the moon and sun, blotting out the direct sunlight that normally makes our satellite glow whitish-yellow. The moon travels to a similar position every month, but the tilt of its orbit means it normally passes above or below the Earth’s shadow — so most months we have a full moon without an eclipse.