The planets are nine worlds that seem to have little in common, except that they circle around a single sun and are bound together by its gravity. Shortly after World War ...

Earth is a living planet. Volcanic eruptions mean that it is geological alive. Astronomers and geologists wondered for a long time if other planets also are alive. When a ...

To send space probes to the four giant planets in the outer solar system seemed in the mid-60's impossible. Rocket power could carry a spacecraft no further than Jupiter. ...

In 1959 the Soviet probe Lunik 2 becomes the first spacecraft ever to hit the Moon. Within a month it is followed by Lunik 3, which takes the first pictures of the dark s ...

A spectroscope splits the sun light into different colors, thereby making it possible to analyze which elements the Sun is made of. When the spectroscope is turned to dif ...

The Planets looks at planetary atmospheres. It looks at the life giving atmosphere of Earth, the crushing greenhouse of Venus, the thin gaseous layer of Mars, and the mae ...

The Planets examines the prospects of life on other worlds in our solar system. It looks at Venus, Mars, and the water bearing moons of the outer planets. ...

The Planets looks at the ultimate fate of our solar system and examines the possibility of extrasolar planets. ...