<P> The model was on display in New York City's Battery Park during the 2010 World Science Festival, where it served as the backdrop for a panel discussion featuring Nobel Prize laureate John C. Mather, astronaut John M. Grunsfeld and astronomer Heidi Hammel . In March 2013, the model was on display in Austin, Texas for SXSW 2013 . </P> <P> The JWST's primary scientific mission has four key goals: to search for light from the first stars and galaxies that formed in the Universe after the Big Bang, to study the formation and evolution of galaxies, to understand the formation of stars and planetary systems and to study planetary systems and the origins of life . These goals can be accomplished more effectively by observation in near - infrared light rather than light in the visible part of the spectrum . For this reason the JWST's instruments will not measure visible or ultraviolet light like the Hubble Telescope, but will have a much greater capacity to perform infrared astronomy . The JWST will be sensitive to a range of wavelengths from 0.6 (orange light) to 28 micrometers (deep infrared radiation at about 100 K (− 170 ° C; − 280 ° F)). </P> <P> JWST may be used to gather information on the dimming light of star KIC 8462852, which was discovered in 2015, and has some abnormal light - curve properties . </P> <P> The JWST will be located near the second Lagrange point (L) of the Earth - Sun system, which is 1,500,000 kilometers (930,000 mi) from Earth, directly opposite to the Sun . Normally an object circling the Sun farther out than Earth would take longer than one year to complete its orbit, but near the L point the combined gravitational pull of the Earth and the Sun allow a spacecraft to orbit the Sun in the same time it takes the Earth . The telescope will circle about the L point in a halo orbit, which will be inclined with respect to the ecliptic, have a radius of approximately 800,000 kilometers (500,000 mi), and take about half a year to complete . Since L is just an equilibrium point with no gravitational pull, a halo orbit is not an orbit in the usual sense: the spacecraft is actually in orbit around the Sun, and the halo orbit can be thought of as controlled drifting to remain in the vicinity of the L point . This requires some station - keeping: around 2--4 m / s per year from the total budget of 150 m / s . Two sets of thrusters constitute the observatory's propulsion system . </P>

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