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One question I have is why these objects are only detected via sight and radar. Don't we have so many telescopes pointing at the sky that if something were to b
by nikkwong 8y ago
One question I have is why these objects are only detected via sight and radar. Don't we have so many telescopes pointing at the sky that if something were to be approaching our planet, someone would notice before they entered our airspace?
- gdubs 8y agoFrom my understanding, the sky is huge and most of the telescopes are focused on very tiny areas.
- ceejayoz 8y agoWe struggle to detect stealth aircraft from our own civilization more than a few dozen miles away. If a species can travel from star to star, it can likely evade our detection. Telescopes are basically worthless for spotting anything small or stealthy - asteroids are fairly regularly discovered after they whiz by the planet. Of course, the other part of the answer is that these things are likely terrestrial, and didn't come from space in the first place.