Space telescopes have some major limitations, but laser technology is allowing earth-based telescopes to make a comeback. Derrick & Kalpana discuss the future of space observation in this declassified bonus clip from "A Practical Guide to the Cosmos."

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See the universe like never before! Subscribe to The Franklin Institute for episodes of A PRACTICAL GUIDE TO THE COSMOS, an original video series co-hosted by Chief Astronomer Derrick Pitts and @TokNerdyToMe's Kalpana Pot. Explore the many secrets of the universe, from black holes and exoplanets to space travel and the end of time. Plus we'll show you how, when, and where to make the most of the night sky wherever you are.

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