Large binocular Telescope Operational
March 31st 2008 08:04
Side view of the L.B.T
`Mirror Mirror on the wall. Or words to that effect taken from a children’s story almost says it all
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Astro Earth - March 2008
`Mirror Mirror on the wall. Or words to that effect taken from a children’s story almost says it all
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Oldest surviving artificial Earth satellite,turned 50
March 27th 2008 06:53
Comments (2) The Southern Cross Constellation
March 24th 2008 14:05
Photo of the constellation Southern Cross taken from my back yard
The Southern Cross is a distinctive constellation consisting of several bright starsin the shape of a cross , (depending on your imagination). This particular constellation is perhaps the most popular constellation for people in Australia and is a symbol on our flag going back in our history. Shares close ties with the Eureka Stockade Flag ( this flag was used during the uprising in Ballarat, Victoria, in 1854
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The Andromeda Galaxy (M31) the nearest spiral Galaxy to our own
March 21st 2008 03:08
Our nearest neighbour The Andromeda Galaxy (M31) the nearest spiral Galaxy to our own which can be seen with naked eye.
Andromeda is best seen from the northern hemisphere but can be seen in the southern hemisphere just before dawn. However if you don’t like early mornings viewers can see Andromeda rising in the evening sky from early November.
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Andromeda is best seen from the northern hemisphere but can be seen in the southern hemisphere just before dawn. However if you don’t like early mornings viewers can see Andromeda rising in the evening sky from early November.
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New techniques in Space communication
March 19th 2008 08:12
Until recently communication techniques in space have evolved from those techniques already in use in current space-flight programs, and are closely related techniques developed in fields such as air-defense surveillance and radio astronomy. Basically, the same equations will govern the propagation of electromagnetic energy and the transmission of information in space as on the Earth.
The problem with radio communication is the large antenna arrays needed coupled with the large amount of radio energy output to get the signal to the spacecraft. Getting the signal to the space craft from earth is relatively easy. On earth you can construct huge antennas but in space you are limited to the weight and size of the spacecraft. You also have the limitation of bandwidth as it affects the rate of information you can send and receive. Currently communication data using radio can take many minutes and at times hours to transmit data, (planetary distance notwithstanding.)
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The problem with radio communication is the large antenna arrays needed coupled with the large amount of radio energy output to get the signal to the spacecraft. Getting the signal to the space craft from earth is relatively easy. On earth you can construct huge antennas but in space you are limited to the weight and size of the spacecraft. You also have the limitation of bandwidth as it affects the rate of information you can send and receive. Currently communication data using radio can take many minutes and at times hours to transmit data, (planetary distance notwithstanding.)
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New Video images of the Moon
March 17th 2008 10:33
Japan’s new Kaguya spacecraft has taken some stunning images of the moon ,the first new high quality images taken since the Apollo era.
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Rounding the Lunar curve
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Saturn's largest moon Titan, Frozen Lakes
March 12th 2008 07:18
Another misty morning here on Titan and chance of intermittent methane haze on the way. This would be a typical weather broadcast if you lived on Saturn's moon Titan, sure the view of Saturn would be spectacular if you could see it through the passing haze.
Titan is Saturn’s largest moon. Not a pleasant place to live with temperatures in the region of-179 °Celsius[ Click here to read more ]
Titan is Saturn’s largest moon. Not a pleasant place to live with temperatures in the region of-179 °Celsius
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More on the "10th" Planet
March 10th 2008 08:02
Astronomers have discovered an object in our solar system that is larger than Pluto. They are calling it the “10th planet”, but already that claim has been in contention.
The newly discovered planet’s size is not at issue. But the very definition of planet hood is. There is no good scientific reason to keep Pluto a planet without doing serious disservice to the remainder of the solar system. However the idea that Pluto is a planet is a cultural norm. It is enshrined in a million different ways, from plastic models depicting the solar system that include the nine planets, to the countless millions of school children who have told about the nine planets for the last 75 years. I guess the debate about Pluto’s planter status will continue. NASA effectively endorsed the idea in an official statement that referred to 2003 UB313 [Xena] as the 10th planet.
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The newly discovered planet’s size is not at issue. But the very definition of planet hood is. There is no good scientific reason to keep Pluto a planet without doing serious disservice to the remainder of the solar system. However the idea that Pluto is a planet is a cultural norm. It is enshrined in a million different ways, from plastic models depicting the solar system that include the nine planets, to the countless millions of school children who have told about the nine planets for the last 75 years. I guess the debate about Pluto’s planter status will continue. NASA effectively endorsed the idea in an official statement that referred to 2003 UB313 [Xena] as the 10th planet.
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Martian Avalanche
March 8th 2008 09:38
Just when you think you have seen it all, and you may think that Mars is just an ordinary “dead” planet you are presented with another surprising event.
This impressive image taken just by chance when the HiRISE orbiter was repeatedly perusing selected Martian sites to track seasonal changes.
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This impressive image taken just by chance when the HiRISE orbiter was repeatedly perusing selected Martian sites to track seasonal changes.
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Tuning in to the Universe Detecting radio signals from other planets
March 3rd 2008 10:46
Detecting radio signals from other planets is not difficult to achieve. All you need is a little bit of wire a few pieces of timber and an old radio receiver that has access to short wave. Sure it is not as sophisticated as the professionals radio telescopes but it is a great place to start.
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jupiter NASA image
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