James Webb

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A Look at the James Webb Space Telescope:

A Look at the James Webb Space Telescope By, Sam Bielawski, Matt Diliberto , Robert Board, Tiffany Bien

It’s Predecessor: The Hubble Space Telescope :

It’s Predecessor: The Hubble Space Telescope Carried into orbit in 1990 Provides detailed, visible-light images Observes in near ultra-violet, visible, and near infrared light Expected to function until at least end of 2013

Hubble’s Successes :

Hubble’s Successes Discovered distance to Cepheid variable stars, which are used as standard candles to measure distances to distant galaxies Reduced amount of error in the Hubble Constant, which is used to estimate the expansion of the universe Figured out that the expansion of the universe is actually accelerating instead of decelerating to the influence of gravity

James Webb :

James Webb Second Administrator of NASA from 1961-68 Worked under President Kennedy and Johnson Responsible for the first seven Apollo missions that sent unmanned space crafts into space

Basic Facts :

Basic Facts JSWT observes in infrared spectrum, which allows for longer wavelength coverage and improved sensitivity Allows us to observe beginning of time at the edge of the universe Capable of looking inside dust clouds to see stars and planetary systems as they form Expected to be launched in 2018


Orbit Elliptical orbit Will orbit at 930,000 miles from Earth Will orbit around the second Lagrange point Lies on line defined by two large masses where the gravitational forces balance the centrifugal effect  will maintain the same relative position with respect to the Sun and the Earth

Mission Goals:

Mission Goals 4 main components Search for light from the first stars and galaxies that formed in the universe after the Big Bang Study the formation and evolution of galaxies Further understand the formation of stars and planetary systems Study planetary systems and origins of life

Looking Back in Time with JWST:

Looking Back in Time with JWST

Upgrades from Hubble :

Upgrades from Hubble Much greater capacity to collect infrared light rather than visible or ultraviolet light Allows us to accomplish mission goals more effectively JWST ~ half the mass of Hubble JSWT primary mirror has a collecting area about 5 times greater that Hubble

A Closer Look at JWST:

A Closer Look at JWST

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