Originally named the Next Generation Space Telescope, the institute proposed a project 5 times as large as Hubble with infrared capabilities. The year before Hubble launched, the Space Telescope Science Institute (STScI) started planning the next big instrument. The telescope orbits around the earth and is within maintenance reach. Just 13 years after the start of the project, Hubble launched on the Space Shuttle Discovery. This would finally allow researchers to study astronomy without the interference of Earth’s dense atmosphere.ĭevelopment of the telescope went steadily, and in 1990, it was ready for launch. It took over three decades before the project was greenlighted, with funding for the Hubble Space Telescope awarded in 1977. The astronomer Lyman Spitzer offered the benefits of studying the stars from space in 1946, proposing what was initially called the Large Space Telescope. Interest in an orbital telescope began before NASA was established. Hubble vs James Webb: What’s the Difference? Engineers preparing James Webb Telescope for space launch. Visible light, ultraviolet, near-infrared Side by Side Comparison: Hubble vs James Webb Continue reading to learn more about the differences between Hubble vs James Webb. With the Hubble at the end of its lifecycle, however, the James Webb Space Telescope is set to continue its legacy.
The Hubble Space Telescope and its fantastic imagery of the cosmos gave our dreams photographic proof of what is really out there. On July 21, 1969, Niel Armstrong took his first step on the moon and spoke these immortal words: “That’s one small step for man, one giant leap for mankind.” These words ignited enthusiasm around the world for space exploration.ĭecades later, another phenomenon would overtake this historic moment. Webb’s infrared technology allows it to see farther into the universe’s origins and through space dust.the telescope is stationed at L2, a million miles away. The James Webb Space Telescope doesn’t orbit the Earth, but actually, the Sun.It is currently going on its 32nd active year. Hubble’s original life expectancy was 15 years.James Webb’s primary mirror is nearly three times the size of the Hubble.The Hubble Space Telescope was the first optical telescope to orbit the Earth.The bus houses the six major subsystems needed to operate the spacecraft: the Electrical Power Subsystem, the Attitude Control Subsystem, the Communication Subsystem, the Command and Data Handling Subsystem, the Propulsion Subsystem, and the Thermal Control Subsystem.© Dima Zel / Hubble vs James Webb: 5 Must-Know Facts The spacecraft bus provides the support functions for the operation of the Observatory. Very cold (The operating temperature has to be kept under 50 K or -370 deg F). The sunshield keeps the heat of the Sun, Earth, and spacecraft bus electronicsĪway from the OTE and ISIM so that these pieces of the Observatory can be kept Into a warm sun-facing side (spacecraft bus) and a cold anti-sun side (OTE and It integrates four major instruments and numerous subsystems into one payload. The ISIM contains Webb's cameras and instruments. The backplane is like the "spine" of Webb. The OTE gathers the light coming from space and provides it to the science instruments located in the ISIM. It consists of the mirrors and the backplane.
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