Context: The sensitivity of Earth-based infrared telescopes is significantly limited by water vapor in the atmosphere, which absorbs a portion of the infrared radiation arriving from space outside of selected atmospheric windows. This limitation can be partially alleviated by placing the telescope observatory at a high altitude, or by carrying the telescope aloft with a balloon or an aircraft. Space telescopes do not suffer from this handicap, and so outer space is considered the ideal location for infrared astronomy.

Question: What limits the sensitivity of infrared telescopes on Earth?
Answer: water vapor in the atmosphere

Question: To somewhat avoid the water vapor in the atmosphere, where can an observatory be sited?
Answer: at a high altitude

Question: Along with aircraft, what object can be used to carry a telescope aloft?
Answer: balloon

Question: What sorts of telescopes completely avoid water vapor in Earth's atmosphere?
Answer: Space telescopes

Question: What limits the sensitivity of high altitude observatories?
Answer: Unanswerable

Question: What is the ideal location for atmospheric windows?
Answer: Unanswerable

Question: What kind of telescopes avoid absorbing infrared radiation?
Answer: Unanswerable

Question: Where can you place an observatory to avoid the atmospheric window?
Answer: Unanswerable

Question: What absorbs infrared radiation from space away from high altitude?
Answer: Unanswerable