Thursday, August 20, 2009
Hi,
It might sound ridiculous that time travel is possible using telescope, but as a matter of fact that is true. As as peep thru telescope you are not only looking at a object but you are looking at its past.
Let me explain that to you in my below example.
To see any object with your eyes your eyes need light from that object. But you know it takes time for light to travel from one place to other place in universe and the speed of light is constant and we are very well aware of the speed of light in the vaccum.
Saturday, November 15, 2008
Using the latest techniques in space technology, astronomers at NASA and the Lawrence Livermore National Laboratory used direct-imaging techniques to capture picture of a newly discovered planet orbiting star outside our solar system.
NASA's newly discovered planet, Fomalhaut b, is estimated to be roughly three times Jupiter's mass and 10.7 billion miles from its host star, Fomalhaut. NASA's images show Fomalhaut b orbiting the bright southern star Fomalhaut, which is said to be 16 times brighter than our sun and 25 light years away in the constellation Piscis Australis (Southern Fish).
Labels: Planets
New planets were found circling the start HR 8799, infact there were 3 planets as shown in the image. The star is about 128 light-years (that's 128 x 9.5 trillion kilometres) from Earth.
The HR 8799 solar system is only about 60 million years old, compared to the 4.6 billion years our planetary neighbourhood has been around. The trio of planets are 5.3 to 6.6 times hotter than Jupiter.
Scientists estimate that HR8799, roughly 1.5 times the size of the sun, is 130 light years from Earth in the constellation of Pegasus. The individual planets in this planetary family are estimated to be seven to 10 times the mass of Jupiter.To determine whether the faint objects orbiting HR8799 were indeed planets and not other stars, astronomers studying the three newly discovered planets (HR8799b, HR8799c and HR8799d) compared images from studies conducted in different years.
In all the documented pictures, the three objects were found to be orbiting in a counter-clockwise direction around HR8799, proving that they were planets and not just background objects coincidentally aligned in the image.
Labels: Planets