How and why comet tails appear
By: Jose Juan Gutierrez
A comet is a solar system body composed of small particles of ice and dust. Comets have high eccentric orbits around the Sun and as they approach the sun, some of their material is vaporized, forming a coma and a long tail. Comets range in...
How to identify the constellation of Cygnus in the night sky
By: Jose Juan Gutierrez
Cygnus, the swan, is a constelation that can be observed in the northern hemisphere during summer and autumn. Cygnus reaches its highest position in the night sky at about 9 p.m. during the month of September. The swan forms part of an asterism known...
By: Patrick Sills
In the realm of cosmology, there are two main theories as to how the universe was initially formed and what is continuing to happen since its creation. Today, the most popular of these theories suggests that all matter evolved from a gigantic ball of gas...
How you can spot the giant Comet ISON now
By: Terrence Aym
The comet ISON is coming this year and it promises to put on the greatest sky show in the history of the human race.If you haven't heard about this spectacular celestial visitor, you will in the coming months. Due to appear in the skies...
Milky Way galaxy projected to have 17 billion Earth-sized planets
By: Terrence Aym
During the 19th and early 20th Centuries many astronomers believed the galaxy teemed with life, much of it intelligent. Some of the world's foremost stargazers were certain that sister worlds Mars and Venus harbored intelligent life. But as the 20th Century moved closer to the...
By: Patrick Sills
A telescope is typically thought of as an optical instrument used to view distant objects by means of magnifying lenses. Telescopes have been around for over 400 years and have enabled professional and amateur astronomers alike to see far beyond the limits of the naked...
By: Christyl Rivers
Picture a lovely river valley, with high alpine peaks on either side. Trees and broken meadows fill in a patchwork of the view. If a view of a landscape stays relatively the same over observable time, people can think of this vista as a &ldquo...
By: Nwachukwu Lawson Luke
Measuring about 227,900,000 kilometers from the sun, and named after the Roman god of war, Mars is the fourth (and the second smallest) planet in the solar system. It has a surface area of about 144,800,000 square kilometers, no magnetic field...
By: Christyl Rivers
Earth is a rocky planet, just like the other first four planets orbiting Sol, Earth's sun. But Earth is definitely unique due to the vast variation of life on Earth. It is possible that some of the nearby neighboring planets, notably Venus and Mars, may...
By: Eric Puravs
Tau Ceti is a yellow star in the constellation Cetus, which is visible from both the Northern and Southern hemispheres. The star's name is a combination of a Greek letter and the name of the constellation. In 1603, Johann Bayer compiled the Uranometria star catalog...

 

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