How do scientists know if they've found aliens?
You'll need to rule out human noise or other Earth-bound sources, which is to say eliminating the ‘confounders.' A control sample helps, too.
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You'll need to rule out human noise or other Earth-bound sources, which is to say eliminating the ‘confounders.' A control sample helps, too.
Mars is Earth like in some ways, but in other ways it's very different with its global dust storms every two years, its thick sheets of dry ice at its ice caps in winter. Any fresh water is close to its very low boiling point in the near vacuum. And the eccentric orbit also has a big impact on its seasons.
For many years, the huge American chemical company Dupont had an advertising slogan: “"Better Things for Better Living...Through
UFOs aren't screaming "aliens" to scientists. Close calls in the hunt for extraterrestrials include loud radio blasts and surprise molecules on Venus.
A large-scale search of a former president’s home by federal law enforcement is unparalleled in American history.