# Space telescopes - The atmosphere affects our sight of the cosmos - Stars twinkle because there is disturbances in the upper atmosphere - Light is scattered from one single point in the sky to a few arc seconds - Can try to correct for this with lasers (adaptive optics) - Don't need to worry about in space - On Earth, some wavelengths are completely opaque - If you want Infrared, light doesn't transmit - The greenhouse effect - Exoplanet research - Wants biosignatures (atmosphere like Earth) - All the bio signals will be in your data from Earth - In space you don't have to worry about Earth getting in the way - Observing continuously for a year - Can't do from the ground - only get 12 hours at night! - Can do continuously from space - # References 1. https://youtu.be/85ls-FPOVWM # Footnotes