A day is the time it takes for the Earth to rotate on its axis. Divide this by 24 hours and each hour by 60 minutes and you can say what time it is. If only it...
When we look at the stars in the sky, some seem very bright while others are just bright enough to be visible. How bright a star appears to be is known as its...
Apparent magnitude (m) is how bright a star appears to be, but this depends on how far away it is. The closer the star is to us the brighter it will appear to...
Since the invention of telescopes astronomers have been able to see a considerable amount when gazing into the vastness of space. This includes the detail on...
Of all the astronauts that have been to space, most people, when asked, can give the names of astronauts Neil Armstrong and Buzz Aldrin. We know both of these...
It is hard to think about a time when humans were not on the Earth, but there indeed was a time. While it may seem odd to think about the human race in its...
Our Moon is very influential on our planet: it affects our rotation and how we experience the nighttime. Just imagine if we had more than one Moon. While we...
We humans on Earth are very lucky, because we have an atmosphere that is about 300 miles thick. Our atmosphere contains the gasses we breath, and the...