NASA's James Webb Space Telescope is finally ready to open a new window on the universe, capturing the faint light of the first stars and galaxies.
nearly one million miles from Earth. For the past six months, engineers and scientists have been working through a complex series of deployments, activations and checkouts, fine tuning the telescope's focus and optimizing the performance of its four science instruments.
The Carina Nebula, a vast stellar nursery featuring massive young stars in multiple clusters and the debris of supernova blasts, as seen by the Hubble Space Telescope. Webb's infrared view is expected to peer into the dusty clouds to reveal infant suns in the process of being born.Southern Ring Nebula: An expanding cloud of gas a half light year across that was ejected from a dying star.
SMACS J0723.3-7327: The combined gravity of countless stars in huge galaxy clusters like this one can as a powerful lens if the alignment is just right, magnifying the light from more distant objects in the far background to provide a deeper look back across space and time than would otherwise be possible.
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