opens the first day of May, posting this series of questions & replies "..
good read:)
* What is a light-year ?
- A light-year is the distance light travels in one year and corresponds to about 9.5 trillion miles.
* What is the largest planet?
- The largest planet in our Solar System is Jupiter and is in fact a failed star. Its volume is 1300 times greater than that of our planet Earth ..
* Only Saturn has rings around him? And what are they?
- No, Saturn is not the only planet to have rings. Jupiter and Uranus also them, but they are much less noticeable as far more subtle than those that can be seen on Saturn.
What seems to us a compact ring, in reality is nothing but a collection of many rock fragments that orbit around its planet together.
* How hot is our star the Sun?
- The temperature of the solar surface is about 5500 ° C , while its center reaches about 15 million ° C ..
* What planet is so hot that lead you merge?
- To this question many would answer "Mercury, because it is the closest to the Sun" .. Actually, no! The correct answer is Venus, the second planet from the Sun's temperature reaches 470 ° C and is so hot because, unlike Mercury, has an atmosphere.
* Why is the sky blue?
- During the day, sunlight travels through air to reach our eyes. The white light of the sun is a mixture of the colors of the rainbow, but the only air molecules scatter blue rays of sunlight to our eyes, and then only the sky appears blue.
* Which planet Earth one day lasts two years?
- If inhabit on Mercury, we would have two birthdays a day ..! :)
Explanation: Our one day on Mercury lasts 176 days on land equivalent to two years of Mercury. Its rotation is so slow compared to other planets because of its proximity to the Sun
the next .... ;)
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