The planet Uranus has 27 moons, or at least so many have been discovered so far. There could be more.
On Mercury just one day lasts as long as 59 days on Earth. Approximately.
The Moon is larger than Pluto.
There are "seas" on the surface of the Moon. Actually there are some dark patches that have gotten this name as they remind us of seas. Or as some say they might have been real seas at one time. We have grown acustomed to the fact that above us there are many satellites used mainly for communications, and most of them fly in low orbits, about 300 km from the Earth.
The famous Halley once predicted that in 1758 one comet he had previously discovered would once again return. Few believed him, for at the time it seemed more than strange and erratic to think you could predict such a thing. Yet in 1758 the comet returned, but sadly Halley couldn't have the last laugh. He had died 16 years before.
The most distant objects in the Universe that we so far know of are the quasars. According to scientists the closest is billions of light years away.
It is because of the dim light with a reddish hue that they emit that glowing nebulae have been given their names.
Normal everyday pens, the type we used all the time, do not work in space. The reason? There is no gravity in space.
So far the coldest places in our Solar System seems to be Triton, a satellite of Neptune, which has a surface temperature of - 236 Celsius degrees.
Why is Mars red? Due to the rusted iron on its soil.
Researchers have concluded that the Sun is about 5 billion years old. It will probably burn for another 5 billion years.
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