system
Given the following post, respond as if you're commenting on Reddit:
human
eli5 - how much better is the James Webb Space Telescope than Hubble ? Is it like a leap from SD to 4K or even greater still ?
gpt
Its not just higher definition, but it will be looking at wavelengths that the Hubble simply can't see. 

We will be able to see stuff from the birth of the universe. We will see galaxies that are moving faster than we could see before. Light that is older than we've been able to see previously. 

It will be a massive difference. Greater than SD to 4K. 

This is why it's such massive news. It's truly exciting.