The first deep space image taken by the Hubble Space Telescope (HST) is known as the "Hubble Deep Field" (HDF). It was captured in 1995 and revealed a truly remarkable view of the universe.
The Hubble Deep Field image was obtained by pointing the telescope at a seemingly empty region of space in the constellation Ursa Major for an extended period of time. This area of the sky was carefully chosen to avoid bright stars or other known objects.
Over the course of ten consecutive days, Hubble observed the same small region of space, accumulating exposure time to capture extremely faint and distant objects. The resulting image showed an astonishing number of galaxies, including some of the most distant and ancient ever observed at that time.
The Hubble Deep Field image revealed a tapestry of galaxies spanning a wide range of shapes, sizes, and colors. It provided a glimpse into the universe's history and evolution by showing galaxies from various epochs, some dating back to just a billion years after the Big Bang. The image showed galaxies in different stages of formation and interactions, shedding light on the processes that shape the cosmos.
The Hubble Deep Field image not only expanded our understanding of the abundance and diversity of galaxies but also deepened our appreciation of the vastness of the universe and our place within it. It demonstrated the remarkable capabilities of the Hubble Space Telescope in capturing breathtaking images and revolutionized our view of the cosmos.