Knowtex

An illustrated quote from Neil Armstrong, the first human to set foot on the moon.

An intimate tour of Earth's most impressive landscapes as captured by astronauts with their digital cameras. Dr. Justin Wilkinson from NASA's astronaut team describes the special places that spacemen focus on whenever they get a moment.

The incredible story behind an image we've all seen hundreds of times, possibly the most reproduced photograph in history.

Colin Rich tries for the second time his home made high altitude weather balloon photography project, Pacific Star. The balloon was launched at 5:37pm (PST) from Oxnard, CA and reached an altitude of 125,000 feet snapping photos and recording video along the way.

An examination of what Earth would be like with rings, from different latitudes and cities across the globe.

A growing number of doomsday scenarios seem to be appearing on the Internet, but do any contain scientific merit?

We’ve all seen at least one movie in which our planet is destroyed, but most of them were quite repetitive and kind of uninteresting. Our planet deserves so much more!

How earth became what it is today, and how it will be in the future ?

In troubled economic times, it’s often hard to convince the government to fund space science. But there’s one field of research that the public should be happy to support: keeping the Earth from being pummeled by asteroids. And there is no shortage of ideas for how to do this.

Speaking as both an astronomer and "a concerned member of the human race," Sir Martin Rees examines our planet and its future from a cosmic perspective. He urges action to prevent dark consequences from our scientific and technological development.