The differences between Webb telescope and Hubble telescope

The Webb telescope’s primary mirror is 6.5 meters in diameter compared to Hubble’s, which is 2.4 meters, allowing Webb to collect about seven times as much light and see further into the past.

Another key difference is that Webb is equipped with cameras and other instruments sensitive to infrared or “heat” radiation. The expansion of the universe is causing light that is normally in visible wavelengths to be shifted into longer infrared wavelengths that are normally invisible to the human eye.

On the other hand, the Hubble Telescope is in low Earth orbit, where astronauts could visit and repair broken or worn things, or install new, more powerful instruments on them. These modifications added years to its lifespan beyond original estimates.

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