Moon facts for kids
By: Melinda Glover
Outer Space is a wondrous world, and looking up at it, especially late at night, fills your mind with all kinds of questions, especially about the round ball of light known as the moon. How did it get there? What is it made of? How...
By: Scott Hayden
In our solar system, Mars is the fourth planet from the Sun and scientists are always trying to learn more about this world. The color of Mars is reddish-brown because the ground is filled with iron-oxide, otherwise known as rust. It would take more than...
Tips for choosing a telescope for a beginning astronomer
By: Richard Craig
So you want to buy a telescope for an aspiring young Astronomer and are confused as to what is the best choice. This is a situation that many parents find themselves in. They are blinded by the vast array of types and sizes, some are...
By: Christine Lorraine
A planetary nebula is defined as, "A bright cloud of glowing gas and dust surrounding a highly evolved star," according to encyclopedia.com. The term "nebula" originated in the mid-1600s, derived from the Greek term "nephele," which refers to a cloud, fog or...
Why we should Colonize Mars Andor the Solar System
By: CL Mclendon
As the geological evidence of Earth proves, life comes and goes on this planet in a blink of an eye. It has been estimated that there have been between five to twenty mass extinction events on Earth since life first appeared. Each caused by different...
By: Jen Cooper
A dark nebula is one of a group of celestial phenomena, generally known simply as nebula, (or nebulae in the plural,) consisting of clouds of gas and dust grains, slowly swirling tightly together in interstellar space. The term nebula was once applied to any...
By: Janet Grischy
A planetary nebula is one stage of a star’s slow death. It has nothing to do with planets. The astronomer William Herschel named this kind of nebula for what he saw as a resemblance to the planet Uranus, as it appeared through primitive eighteenth...
What is a dark nebula?
By: Krystal Waldron
Clouds which are dusty, obscure and block background light within the galaxy, are called dark nebulae. The most famous of these known to man is the Horsehead Nebula. These dark clouds of gas and dust, which sit within the Milky Way Galaxy, only become visible...
The difference between globular clusters and open clusters
By: Sharon O'Connell
Groups of stars are known as clusters. There are two types of clusters in our universe: open and globular. Open clusters can contain as little as a dozen to several hundred stars. Open star clusters are closer to our galaxy than globular clusters. Stars in...
By: John Traveler
Planetary nebula were so named by 18th century astronomers because through a telescope they appear as a disk not unlike the planets of our solar system. But even though they may have the appearance of planets, hence the name, they are not. They are instead...

 

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