It is launched in April 1990. NASA’s Hubble Telescope has revolutionized astronomy and inspired a generation with its magnificent views of the universe. Today Hubble Space Telescope is 20 years old so i decided to post those images which are taken by Hubble.
Pillars in the Carina Nebula
Hubble’s 20th anniversary image of a three-light-year-tall mountain of gas and dust shows gas jets, fired by infant stars within the pillar.
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This craggy fantasy mountaintop enshrouded by wispy clouds looks like  a bizarre  landscape from Tolkien’s “The Lord of the Rings” or a Dr.  Seuss book, depending  on your imagination. The NASA Hubble Space  Telescope image, which is even  more dramatic than fiction, captures the  chaotic activity atop a three-light-year-tall pillar  of gas and dust  that is being eaten away by the brilliant light from   nearby bright  stars. The pillar is also being assaulted from within, as  infant stars   buried inside it fire off jets of gas that can be seen  streaming from  towering  peaks.Globular Star Clusters
Globular Star Clusters , home to hundreds of thousands of stars held together by gravity, is one of the densest clusters in the Milky Way.
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The globular clusters , one of the brightest  Milky Way globular star clusters.   This cluster, seen near the Small Magellanic Cloud  in the sky,  and at a distance of 4.6 kpc (15000 light years) from us  and 7.3 kpc  (23800  light years) from the Galactic Center, likely  contains about 1 million  stars. Its optical half-light radius  is 2.79´, or only 3.7 pc; the stars in  globular clusters, such as 47  Tuc, are clearly densely packed.  This  cluster  is known to be  typically metal-rich, relative to many other globular  clusters.  Globular clusters formed early in the Galaxy’s history and, therefore,   must have been chemically enriched by massive short-lived stars.
Star Cluster NGC 602
Newly formed stars carve a cavity in the center of a star-forming region of the Small Magellanic Cloud.
Image credit: NASA, ESA and the Hubble Heritage Team (STScI / AURA) 
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Near the outskirts of the Small Magellanic  Cloud, a satellite galaxy  some 200 thousand light-years distant, lies  the young star cluster NGC  602. Surrounded by natal gas and dust, NGC  602 is featured in this  Hubble image of the region. Fantastic ridges  and undulating  shapes  strongly suggest that energetic radiation and shock waves from  NGC 602′s  massive young stars have eroded the dusty material and  triggered a  progression of star formation moving away from the  cluster’s center. At  the estimated distance of the Small Magellanic  Cloud, the picture spans  about 200 light-years, but a tantalizing  assortment of background  galaxies are also visible in the sharp Hubble  view. The background  galaxies are hundreds of millions of light-years  or more beyond NGC 602. 
Gas Pillars in the Eagle Nebula
Pillars of gas in the Eagle Nebula are sculpted by stellar winds and radiation. Embryonic stars form inside the pillars.Image Credit: NASA, ESA, STScI, J. Hester and P. Scowen (Arizona State University)
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The pillars are in some ways akin to buttes in the desert, where   basalt and other dense rock have protected a region from erosion, while  the surrounding landscape has been worn away over millennia.  In this  celestial case, it is especially dense clouds of molecular hydrogen gas  (two atoms of hydrogen in each molecule) and dust that have survived  longer than their surroundings in the face of a flood of ultraviolet  light from hot, massive newborn stars (off the top edge of the picture).   This process is called “photoevaporation.  “This ultraviolet light is  also responsible for illuminating the convoluted surfaces of the columns  and the ghostly streamers of gas boiling away from their surfaces,  producing the dramatic visual effects that highlight the three-dimensional nature of the clouds. The tallest pillar (left) is about about 4 light-years long from base to tip.The Butterfly Nebula NGC 6302
Gas heated to more than 36,000 degrees Fahrenheit tears across space at more than 600,000 miles an hour to form the butterfly-shaped nebula.ABOUT THIS IMAGE:
Ordinary stars like our Sun live undistinguished  lives. They steadily churn out heat and light for billions of years.  Oddly enough, their lives become more exciting when they run out of  hydrogen fuel and reach retirement age. This is when these stars begin  to stand out. As the fuel is exhausted, they first expand to enormous  sizes, becoming what are called “red giants.” Then they shed their outer  layers into space, producing the beautiful shapes of planetary nebulae.  Finally, the remnant star at the center settles down into an object  about the size of the Earth, called a “white dwarf.”
The Butterfly Nebula, catalogued as NGC 6302, was ejected from a dying star that was once about five times the mass of the Sun. After about 100 million years, it exhausted its nuclear fuel, and has recently ejected its outer layers. Now the remnant star at the center is unleashing a stream of ultraviolet radiation that is making the ejected material glow. This object is an example of a planetary nebula, so-named because many of them have a round appearance resembling that of a planet when viewed through a small telescope.
The Butterfly Nebula, catalogued as NGC 6302, was ejected from a dying star that was once about five times the mass of the Sun. After about 100 million years, it exhausted its nuclear fuel, and has recently ejected its outer layers. Now the remnant star at the center is unleashing a stream of ultraviolet radiation that is making the ejected material glow. This object is an example of a planetary nebula, so-named because many of them have a round appearance resembling that of a planet when viewed through a small telescope.
Sombrero Galaxy
The Sombrero Galaxy, home to a supermassive black hole and a rich system of nearly 2,000 globular clusters, is seen nearly edge-on from Earth’s perspective.ABOUT THIS IMAGE:
Hubble Space Telescope has trained its razor-sharp eye on one of the  universe’s most stately and photogenic  galaxies, the Sombrero galaxy,  Messier 104 (M104). The galaxy’s  hallmark is a brilliant white, bulbous  core encircled by the thick dust  lanes comprising the spiral structure  of the galaxy. As seen from  Earth, the galaxy is tilted nearly edge-on.  We view it from just six  degrees north of its equatorial plane. This  brilliant galaxy was named  the Sombrero because of its resemblance to  the broad rim and  high-topped Mexican hat.
Interacting Galaxies “The Mice”
Streamers of stars and gas emanate from two colliding galaxies known as “The Mice,” which will merge into one galaxy in about 500 million years.
Image  Credit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin  (STScI), G. Hartig (STScI), the ACS Science Team, and ESA 
Hubble Ultra Deep Field
This view of nearly 100,000 galaxies captures the faintest visible-light details of the universe ever seen. It reveals billions of light years of galactic history.
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Galaxies, galaxies everywhere – as far as NASA’s Hubble Space  Telescope can see. This view of nearly 10,000  galaxies is the deepest  visible-light image of the  cosmos. Called the Hubble Ultra Deep Field,  this  galaxy-studded view represents a “deep” core sample of the  universe, cutting across billions of light-years.The snapshot includes galaxies of various ages, sizes, shapes, and colors. The smallest, reddest galaxies, about 100, may be among the most distant known, existing when the universe was just 800 million years old. The nearest galaxies – the larger, brighter, well-defined spirals and ellipticals – thrived about 1 billion years ago, when the cosmos was 13 billion years old.
Hubble Ultra Deep Field 3D
What happens when you point the Hubble Space Telescope to a seemingly blank patch of sky? A view that takes you to the edge of the universe!
Carina Nebula
A 50-light-year-wide view of the Carina Nebula shows a maelstrom of star birth and death.
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