What is light pollution in astronomy
By: Jon Barr
The term “light pollution” means exactly what it sounds like. It is artificial light that is wasted. It is caused by poorly installed light fixtures, over powered lights such as those typically in a shopping mall parking lot and inefficient lighting fixtures. This wasted...
Facts about the super perigee moon
By: Shanan King
The day of the closest SuperMoon in 2012 (May 5 or May 6, depending on location), arrived with less fanfare than the March 19, 2010, SuperMoon: an astronomical event that, according to many in 2011, only occurs once every 18 years. How is it possible...
From perigee to apogee and back
By: Lane Olinghouse
The distance from moon's perigee to its apogee and back varies from day to day, if not minute to minute. The distance changes primarily because of the elliptical path the moon traverses on its orbit around the earth. To determine these intervals, one starts with...
By: William Browning
The Earth’s moon is a huge ball of rock with a diameter 2,000 miles across and 4.5 billion years old. The origins of the moon are still a mystery. But there are many things astronomers do know about the Earth’s only...
Superflares that could vaporize Earth in seconds seen on sun-like stars
By: Terrence Aym
Amazed astronomers discovered massive stellar superflares that could swallow up Earth with one fiery gulp.The incredible images of stars similar in size to the sun, reveals superflares up to 10,000 times more powerful than the coronal mass ejections the sun throws off during...
From perigee to apogee and back
By: Shanan King
The visible portion of the Moon to observers on Earth seems to change shape and appears closer or further away at differing times throughout a calendar month. These changes are part of lunation, more commonly known as the lunar cycle. This cycle produces different images...
By: Elizabeth M Young
It is a bit awkward to announce a telescope array that will cover an entire square kilometer, then to split it into segments that will operate in three nations. No matter how they are split up, the resulting set of arrays, will search for extraterrestrial...
A look at some of the largest objects in the universe
By: Andrew Moran
More than 14 billion years ago, the universe developed from the Planck epoch, a hot and dense phase in its beginning. Since then, the universe has expanded and has created billions of galaxies, stars and planets. The universe will continue to expand until eventually everything...
A look at some of the largest objects in the universe
By: Jose Juan Gutierrez
The universe contains within countless objects. Some are big as our own Sun or the planet Jupiter, while others are as little as hydrogen and helium particles composing the nebulas; however, the universe is so vast that the biggest objects in the solar system would...
Compare and contrast: the Milky Way galaxy and the Andromeda galaxy
By: Jose Juan Gutierrez
Galaxies are large collections of stars, gas and dust maintained together by the force of gravity. Galaxies contain anywhere from several millions of stars to more than a trillion, and their sizes range from a thousand to several hundred thousand light years in diameter. There...

 

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