WEBVTT

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<v Speaker 1>Welcome to Bedtime Astronomy. Explore the wonders of the cosmos

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<v Speaker 1>with our soothing Bedtime Astronomy podcast. Each episode offers a

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<v Speaker 1>gentle journey through the stars, planets, and beyond, perfect for

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<v Speaker 1>unwinding after a long day. Let's travel through the mysteries

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<v Speaker 1>of the universe as you drift off into a peaceful

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<v Speaker 1>slumber under the night sky. Hubble b I that transformed

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<v Speaker 1>the cosmos. The Hubble Space Telescope HST is one of

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<v Speaker 1>the most iconic and transformative scientific instruments ever created. Launched

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<v Speaker 1>in nineteen ninety, the Hubble has provided humanity with some

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<v Speaker 1>of the most detailed and breathtaking images of the universe,

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<v Speaker 1>revolutionizing our understanding of space. This narrative delves into the history, achievements,

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<v Speaker 1>an impact of a Hubble space telescope. The origins of

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<v Speaker 1>a Hubble space telescope date back to the nineteen forties,

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<v Speaker 1>when astronomer Linemen Spitzer first proposed the idea of a

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<v Speaker 1>space based observatory. Spitzer recognized the limitations of ground based telescopes,

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<v Speaker 1>which are hampered by the Earth's atmosphere. Atmospheric turbulence distorts

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<v Speaker 1>light from stars, causing them to twinkle and blurring the

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<v Speaker 1>images captured by ground based telescopes. A telescope in space

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<v Speaker 1>above the atmosphere could provide much clearer and more detailed

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<v Speaker 1>views of the universe. Spitzer's vision began to take shape

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<v Speaker 1>in the nineteen seventies with the development of the Large

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<v Speaker 1>Space Telescope LST project, which would later be renamed the

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<v Speaker 1>Hubble Space Telescope in honor of the pioneering as astronomer

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<v Speaker 1>Edwin Hubble. Edwin Hubble's observations in the nineteen twenties revealed

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<v Speaker 1>that the universe is expanding, a discovery that laid the

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<v Speaker 1>foundation for the Big Bang theory. Naming the space telescope

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<v Speaker 1>after him was a fitting tribute to his contributions to astronomy.

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<v Speaker 1>The Hubble Space Telescope project was a collaboration between NASA

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<v Speaker 1>and the European Space Agency ESA. The ambitious endeavor faced

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<v Speaker 1>numerous technical, financial, and political challenges. Designing a telescope that

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<v Speaker 1>could operate in the harsh environment of space required innovative

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<v Speaker 1>engineering solutions. The telescope needed to be extremely precise, with

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<v Speaker 1>a mirror capable of capturing faint light from distant celestial objects.

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<v Speaker 1>Construction of the Hubble Space Telescope began in the late

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<v Speaker 1>nineteen seventies, and by the mid nineteen eighties it was

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<v Speaker 1>nearing completion. However, the project faced a major setback with

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<v Speaker 1>the Challenger disaster in nineteen eighty six. The Space Shuttle

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<v Speaker 1>Challenger exploded shortly after launch, leading to a reevaluation of

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<v Speaker 1>the Space Shuttle program and delays for the Hubble project.

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<v Speaker 1>Despite these challenges, the Hubble Space Telescope was finally ready

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<v Speaker 1>for launch in nineteen ninety. On April twenty fourth, nineteen ninety,

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<v Speaker 1>the Space Shuttle Discovery lifted off from Kennedy Space Center,

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<v Speaker 1>carrying the Hubble Space Telescope into orbit. The deployment of

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<v Speaker 1>Hubble marked a significant milestone in space exploration, and astronomers

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<v Speaker 1>eagerly anticipated the first images from the telescope. However, initial

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<v Speaker 1>images revealed a problem. The images were blurred due to

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<v Speaker 1>a flaw in the primary mirror. This flaw, known as

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<v Speaker 1>spherical aberration, was caused by a manufacturing error that left

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<v Speaker 1>the mirror slightly misshapen. The discovery of the flaw was

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<v Speaker 1>a major setback and a source of embarrassment for NASA. However,

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<v Speaker 1>the agency quickly devised a plan to fix the telescope.

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<v Speaker 1>In nineteen ninety three, a Space Shuttle mission was launched

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<v Speaker 1>to install corrective optics, effectively giving Hubble a pair of

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<v Speaker 1>glasses to correct the aberration. This mission, known as STS

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<v Speaker 1>sixty one, was a resounding success. Astronauts installed the corrective

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<v Speaker 1>optics space Telescope at seal replacement co star and other instruments,

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<v Speaker 1>restoring Hubble's vision and allowing it to capture the sharp,

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<v Speaker 1>detailed images that it is known for today. With its

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<v Speaker 1>vision corrected, the Hubble Space Telescope began to fulfill its promise,

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<v Speaker 1>providing stunning images and groundbreaking scientific data. One of its

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<v Speaker 1>early triumphs was the observation of the impact of comet

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<v Speaker 1>Shoemaker Levy nine on Jupiter in nineteen ninety four. Hubble

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<v Speaker 1>captured detailed images of the comet fragments colliding with Jupiter's atmosphere,

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<v Speaker 1>providing valuable insights into the dynamics of such impacts and

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<v Speaker 1>the composition of the planet's atmosphere. Hubble's observations have had

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<v Speaker 1>a profound impact on our understanding of the universe. One

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<v Speaker 1>of its most significant contributions has been the determination of

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<v Speaker 1>the rate of extras expansion of the universe, known as

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<v Speaker 1>the Hubble constant. By observing distant galaxies and measuring their redshifts,

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<v Speaker 1>Hubble provided precise measurements that have helped refine our understanding

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<v Speaker 1>of the age and size of the universe. The Hubble

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<v Speaker 1>Space Telescope has also played a crucial role in the

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<v Speaker 1>study of exoplanets, planets that orbit stars outside our Solar system.

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<v Speaker 1>In nineteen ninety five, Hubble provided the first direct detection

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<v Speaker 1>of an exoplanet's atmosphere, revealing the presence of sodium in

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<v Speaker 1>the atmosphere of the planet HD two zero nine four

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<v Speaker 1>five eight B. This observation marked the beginning of a

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<v Speaker 1>new era in the study of exoplanets and their potential habitability.

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<v Speaker 1>Another groundbreaking discovery made by Hubble was the identification of

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<v Speaker 1>dark energy, a force that is causing the acceleration of

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<v Speaker 1>the universe's expansion. In the late nineteen nineties, observations of

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<v Speaker 1>distant supernova by Hubble and other telescopes led to the

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<v Speaker 1>realization that the universe is not only expanding, but doing

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<v Speaker 1>so at an accelerating rate. This discovery was a major

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<v Speaker 1>surprise and has led to a reevaluation of cosmological models,

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<v Speaker 1>with dark energy now believed to make up about sixty

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<v Speaker 1>eight percent of universe. Pubble's contributions to the study of

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<v Speaker 1>galaxies have been equally significant. The telescope has provided detailed

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<v Speaker 1>images of galaxies at various stages of their evolution, revealing

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<v Speaker 1>the processes that shape them. One of the most famous

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<v Speaker 1>images captured by Hubble is the Hubble Deep Field, a

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<v Speaker 1>long exposure image taken in nineteen ninety five that revealed

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<v Speaker 1>thousands of galaxies in a tiny patch of sky. This

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<v Speaker 1>image provided a glimpse into the early universe and has

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<v Speaker 1>been followed by even deeper observations such as the Hubble

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<v Speaker 1>Ultra Deep Field and the Extreme Deep Field. The Hubble

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<v Speaker 1>Space Telescope has also provided stunning images of nebulae, the

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<v Speaker 1>vast clouds of gas and dust where stars are born.

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<v Speaker 1>One of the most iconic images is the Pillars of Creation,

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<v Speaker 1>taken in nineteen ninety five, which shows towering columns of

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<v Speaker 1>gas and dust and the evil nebula. These images have

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<v Speaker 1>not only provided valuable scientific data, but have also captured

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<v Speaker 1>the public's imagination, showcasing the beauty and grandeur of the universe.

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<v Speaker 1>In addition to its scientific achievements. The Hubble Space Telescope

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<v Speaker 1>has under gone several servicing missions to ensure its continued

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<v Speaker 1>operation and upgrade its instruments. The first servicing mission in

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<v Speaker 1>nineteen ninety three was followed by subsequent missions in nineteen

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<v Speaker 1>ninety seven, nineteen ninety nine, two thousand two, and two

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<v Speaker 1>thousand and nine. Each mission involved Space Shuttle crews performing

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<v Speaker 1>complex spacewalks to replace and repair Hubble's instruments, install new technology,

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<v Speaker 1>and extend the telescope's operational life. The two thousand nine

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<v Speaker 1>servicing mission, known as STS one twenty five, was particularly significant.

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<v Speaker 1>It was the final Shuttle mission to Hubble and involve

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<v Speaker 1>the installation of two new instruments, the Wide Field Camera

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<v Speaker 1>three WFC three and the Cosmic Origin Spectrograph costs. These

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<v Speaker 1>instruments have enhanced Hubble's capabilities, allowing it to observe the

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<v Speaker 1>universe in greater detail and across a broader range of wavelengths.

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<v Speaker 1>As Hubble approaches its third decade in space, it continues

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<v Speaker 1>to make groundbreaking discoveries and inspire awe. One of its

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<v Speaker 1>recent achievements includes the observation of interstellar objects passing through

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<v Speaker 1>our Solar System. Such as O Muamuah in twenty seventeen

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<v Speaker 1>and comet two ice slash Borisov in twenty nineteen. These

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<v Speaker 1>observations have provided valuable insights into the properties and origins

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<v Speaker 1>of objects from outside our Solar system. Hubble has also

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<v Speaker 1>contributed to our understanding of the outer planets and their moons.

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<v Speaker 1>Its observations of Jupiter, Saturn, Uranus, and Neptune have revealed

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<v Speaker 1>details about their atmospheres, rings, and moons, contributing to our

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<v Speaker 1>knowledge of the gas giants in their complex systems. For example,

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<v Speaker 1>Hubble's images of Jupiter's Great Red Spot have provided a

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<v Speaker 1>long term record of changes in the size and color

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<v Speaker 1>of this massive storm. The Hubble Space Telescope's ability to

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<v Speaker 1>observe the universe in multiple wavelengths, from ultraviolet to near infrared,

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<v Speaker 1>has allowed scientists to study a wide range of astronomical phenomena.

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<v Speaker 1>Its observations of the ultraviolet light from young stars have

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<v Speaker 1>provided insights into star formation and the conditions in the

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<v Speaker 1>early universe. The near infrared capabilities of Hubble have enabled

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<v Speaker 1>the study of distant galaxies and the discovery of some

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<v Speaker 1>of the oldest and most distant objects in the universe.

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<v Speaker 1>The legacy of the Hubble Space Telescope extends beyond its

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<v Speaker 1>scientific contributions. It has had a profound impact on public

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<v Speaker 1>engagement with astronomy and space science. Bestunning images captured by

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<v Speaker 1>Hubble have been widely shared in the media, featured in books,

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<v Speaker 1>and displayed in museums and planetariums around the world. These

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<v Speaker 1>images have sparked curiosity and inspired countless individuals to learn

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<v Speaker 1>more about the universe. Educational programs and resources associated with

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<v Speaker 1>Hubble have also played a crucial role in inspiring the

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<v Speaker 1>next generation of scientists and engineers. NASA and ESA have

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<v Speaker 1>developed a range of educational materials, including classroom activities, online resources,

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<v Speaker 1>and public outreach programs to engage students and educators with

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<v Speaker 1>Hubble's discoveries. The Hubble Heritage Project, for example, has created

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<v Speaker 1>a collection of high quality images and educational materials that

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<v Speaker 1>highlight the telescope's most significant observations. The Hubble Space Telescope's

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<v Speaker 1>legacy will continue through its data archive in the new

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<v Speaker 1>James Webb Space Telescope JWST. The JWST was designed to

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<v Speaker 1>complement and extend Hubble's capabilities with its larger mirror and

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<v Speaker 1>advanced instruments JWST can observe the universe in the infrared,

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<v Speaker 1>allowing it to peer through dust clouds and study the

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<v Speaker 1>formation of stars and galaxies in even greater detail. Hubble's

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<v Speaker 1>data archive, containing decades of observations, will remain a valuable

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<v Speaker 1>resource for astronomers for years to come. The vast amount

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<v Speaker 1>of data collected by Hubble has already led to thousands

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<v Speaker 1>of scientific papers and will continue to be mined for

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<v Speaker 1>new discoveries. The archive ensures that Hubble's contributions to science

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<v Speaker 1>will endure long after the telescope itself has ceased operations.

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<v Speaker 1>In conclusion, the Hubble Space Telescope has revolutionized our understanding

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<v Speaker 1>of the universe and provided some of the most iconic

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<v Speaker 1>images in the history of astronomy. From its troubled beginnings

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<v Speaker 1>and initial setbacks to its subsequent triumphs and ongoing contributions,

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<v Speaker 1>Hubble's journey has been one of perseverance, innovation, and discovery.

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<v Speaker 1>Its observations have reshaped our knowledge of the cosmos, from

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<v Speaker 1>the formation of stars and galaxies to the expansion of

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<v Speaker 1>the universe and the nature of dark energy. M