We still need Hubble

Launched in 1990, the Hubble telescope has been in service for 32 years, and its successor, the Webb telescope, launched late last year and became the star of this year’s astronomy. Hubble is above Earth’s atmosphere and orbits at an altitude of 559 kilometers, while Webb orbits at the Lagrangian L2 point between Earth and the sun, 1.5 million kilometers from Earth. Cornell University astronomer Nikole Lewis said that we still need Hubble because Hubble has the observational power that Webb lacks. She studies exoplanets and needs to decipher exoplanet clouds in visible and ultraviolet wavelengths — wavelengths that Webb isn’t very good at. Webb is Hubble’s successor, not a successor, they can cooperate with each other, and Hubble can still work for ten years.

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