Saturn is the sixth planet from the Sun. It was thought to be the furthest of the planets…
Mars is often called the ‘Red Planet’ because it appears in the sky as an orange-red star. The…
Earth is the largest of the four rocky planets in our Solar System. It is very heavy for…
Titan is larger than the planet Mercury. It is also the second largest moon in the Solar System,…
In many ways, Mars is the most Earthlike of all the planets. A visitor would find that a…
Most stars take millions of years to die. When a star like the Sun has burned all of…
The Sun is a star. Like most stars, the Sun is a ball of very hot gas that…
We live in one of the arms of a large spiral galaxy called the Milky Way. The Sun…
Like people, stars are born, they grow old and they die. Their birth places are huge, cold clouds…
Most astronomers believe the Universe began in a Big Bang about 14 billion years ago. At that time,…
In space, no one can hear you scream. This is because there is no air in space –…
We cannot see anything that happened during the first 300 000 years of the Universe. Scientists try to…
Today, scientists are not so sure that life began on or near the Earth’s surface. Everywhere we look,…
Living things breathe, feed, grow and leave offspring. They range from the simplest single-celled bacteria to plants, birds,…
The Sun is our nearest star. The Sun provides us with light and heat. It also gives out…
An ESA/NASA spacecraft called SOHO has been constantly watching the Sun since 1996. SOHO is stationed 1.5 million…
People travel long distances to see eclipses of the Sun. They only take place at times of new…
Special instruments known as spectrographs tell us that the Sun is made almost entirely of two gases, hydrogen…
