How to buy a telescope

February 14, 2010

  The most important aspect of any telescope is its aperture, the diameter of its objective – lens or a mirror. The bigger the aperture the better – image will appear bright and sharp.  your telescope should have at least 2.8 inches (70 mm) aperture.   Magnifications depend on the eyepieces you put into telescope. Top useful [...]

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Militarists in space

February 10, 2010

Iran launched a new rocket with several live animals aboard into space on  February 3, 2010  raising fresh fears over its nuclear ambitions. President Ahmadinejad also unveiled three domestically made satellites, a booster rocket that can carry a satellite and a study center for satellite data, local news media reported. Iran sent its first satellite into [...]

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Where does the most distant galaxy cluster hide?

February 4, 2010

Speed of light is very important in astronomy. Due to the vast distances involved, it can take a very long time for light to travel from its source to Earth.  The fact that farther-away objects appear younger (due to the finite speed of light) allows astronomers to infer the evolution of stars, of galaxies, and [...]

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Types of planets: from Solar system to interstellar

January 30, 2010

For centuries only several Solar system planets were observed. Today the concept has expanded to include worlds not only in the Solar System, but in hundreds of other extrasolar systems.  The term planet (wandering star) is an ancient Greek word. For them there were 7 known planets, each presumed to be circling the Earth (including [...]

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Are were surrounded by aliens?

January 28, 2010

For the past 50 years, scientists have been scouring the skies for radio signals from beyond our planet, hoping for some sign of extraterrestrial life. Paul Davies of Arizona State Universitystates the variant life forms – most likely tiny microbes could still be hanging around right under our noses.

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Asteroids danger to Earth

January 26, 2010

 How to prevent an asteroid impact? There is no single method which is is effective for the full range of near-Earth objects (NEO). A suite of four types of mitigation is adequate to meet the threat from all NEOs, except the most energetic ones.   Evacuation can save lives from the smallest NEO impact events and is a [...]

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Shuttle price is dropping

January 24, 2010

Do you want to acquire the Space Shuttle?  Now there is a good opportunity:  NASA has slashed the price of spaceships from $42 million to $28.8 million apiece. “Discovery” is already promised to the Smithsonian Institution’s National Air and Space Museum, but ”Atlantis” and “Endeavour” are up for grabs. Potential customers have until Feb. 19 to put [...]

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The first spectrum of an exoplanet obtained

January 18, 2010

For the first time, astronomers using the Very Large Telescope (VLT) have obtained the spectrum of an exoplanet orbiting an almost Sun-like star, providing information on the planet’s formation and composition. Until now, spectra were obtained by space-based observatories watching as an exoplanet passes directly behind its parent star, and comparing the light of the star [...]

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Annular eclipse of the sun 2010

January 15, 2010

The first solar eclipse of 2010 occurs at the Moon’s ascending node in western Sagittarius. An annular eclipse will be visible from a 300-km-wide track that traverses central Africa, the Indian Ocean and eastern Asia. A partial eclipse is seen within the much broader path of the Moon’s penumbral shadow, which includes eastern Europe, most [...]

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