In the Milky Way or popular also with the term Milky Way Solar System is just a small piece. Perhaps, arguably, the Sun and its planets orbiting just a piece of a large cake. So, of course we are not alone. It is quite possible no life other than life on Earth.
The Milky Way was not alone. There are thousands of other galaxies in the universe. But, no one ever knew it before the scientists created a cutting-edge device, a telescope capable of peering into the universe around the Earth. The device was named Hubble. STS-31 rocket that carries the Hubble space for the first time on April 24 in 1990.
Telescope is a space telescope that was in Earth orbit. Named after the famous American scientist Edwin Hubble, who is none other than the inventor of the Hubble law, which applies in astronomy. Just so you know, most of the space objects that have been identified to date is thanks to the Hubble telescope.
launched in 1990
Forerunner of the Hubble telescope began in 1923. launch Wikipedia, a space agency on Earth, including NASA, the European Space Agency (ESA), and the Space Telescope Science Institute, recommends to build a giant space telescope. Given its price, which is valued at $ 1.5 billion, collective funds collected were took almost five decades.
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Around the 1970s, the funds for these projects began to appear. Had to be launched in 1983, the launch of the Hubble canceled due to technical issues, lack of funds, and the Challenger accident trauma that still lasting. Finally, the launch of the Hubble project successfully conducted on April 24 in 1990.
Today, Hubble is still hovering high Earth orbit 559 kilometers above sea level. Wearing reflector (reflective) Ritchey-Chretien telescope with a diameter of 2.4 meter primary lens is capable of presenting the image of the space objects that were located far away from the Earth.
At a rate of 28,000 kilometers per hour, Hubble is able to circumnavigate the Earth within 97 minutes. Hubble energy comes from two solar panels that can provide 2800 watts of power. This power is needed telescope weighs approximately one ton, or about the size of a city bus, every time orbits.
Just to note, the farthest distance of galaxies captured by the Hubble reach 10 billion light years. If one light year is equivalent to 9.5 trillion kilometers, it is hard to imagine the distance that successfully monitored by the Hubble telescope. By comparison, the Moon as the Earth's nearest celestial bodies, the distance is about 385 thousand kilometers from Earth.
25 years
In short, the Hubble telescope has answered the most fundamental human questions, which is about the formation of the universe, the solar system, Earth, and especially the origin of man. In terms of understanding the universe, the images captured Hubble provide outstanding contributions.
Cosmology once speculative because the level of uncertainty is high, above 50 percent, has now become a very scalable with the level of uncertainty of less than 10 percent.
The Hubble telescope has made the so-called Hubble constant increasingly accurate. The Hubble constant is a parameter to calculate the rate of expansion of the universe.
After two decades of orbiting and offering exceptional images, Hubble has not tired of serving humans to understand the universe as well as the symptoms that occur in it.
In an interview with Newscientist recently, Malcolm Niedner, Hubble researchers from NASA Goddard Space Flight Center in Greenbelt, Maryland, noted that more than half of the change in the human understanding of the universe derived from Hubble photograph objects in areas never previously imagined.
In December 2008, the Hubble recorded the greatest works. The Telescope image of the galaxy cluster Abell sent 85. Located 740 million light-years from Earth, Abell 85 is the largest object in the universe collapses.
Stepping age to 23 years, Hubble helped uncover the mystery man in the universe. So also for scientists, especially cosmology and astronomy, very exceptional services. Thanks to its presence, the human eye is now more open to watch the symptoms that occur in space. Thank you, Hubble.
