UNIVERSE
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Milky Way is the largest galaxy in the universe
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The universe has millions of galaxies that each have solar systems
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There are very few galaxies other than our own
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There are millions of galaxies in the universe, but none contain a solar system
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Detailed explanation-1: -Thanks to Hubble’s observations, astronomers have traced the evolution and formation of galaxies, discovered that most galaxies contain supermassive black holes, and mapped the presence of the mysterious dark matter that makes up most of the universe’s mass and structure.
Detailed explanation-2: -Hubble has helped scientists learn about our solar system. The telescope observes comets and planets. Hubble even discovered moons around Pluto that had not been seen before. The telescope has helped scientists understand how planets and galaxies form.
Detailed explanation-3: -By studying the light emitted from various galaxies, Hubble discovered that the light appeared displaced toward the red end of the spectrum. It became apparent that our universe was ceaselessly expanding outward, and all galaxies housed within it were moving away from one another.
Detailed explanation-4: -Images taken by Hubble have helped scientists estimate the age and size of the universe. Scientists believe the universe is almost 14 billion years old. Hubble has helped scientists understand how planets and galaxies form. An image called “Hubble Ultra Deep Field” shows the farthest galaxies ever seen.
Detailed explanation-5: -During its thirty years of operation, the Hubble Space Telescope has changed how we see the cosmos. Its images, based on data returned by the telescope and carefully crafted through digital image processing, have expanded scientific understandings of everything from planets in our solar system to dark matter.
Detailed explanation-6: -Subsequent sensitive observations such as Hubble’s Ultra Deep Field revealed a myriad of faint galaxies. This led to an estimate that the observable universe contained about 200 billion galaxies.
Detailed explanation-7: -Hubble was designed as a general purpose observatory, meant to explore the universe in visible, ultraviolet and infrared wavelengths. To date, the telescope has studied more than 40, 000 cosmic objects, providing views astronomers were unable to capture from the ground.