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Not all smoke alarms created equal

A recent study by researchers found that household photoelectric alarms are more likely to remain functional after installation, with only 5% not working nine months later. In contrast, ionization alarms had a 20% failure rate during the same period, often due to nuisance alarms caused by cooking.

SourceGroup Health Research Institute·JournalInjury Prevention·DateApr 10, 2008

Comets, Like Cars, Leave Carbon Monoxide In Their Wake

A recent Arizona State University study found that comet gas tails contain high concentrations of ionized carbon monoxide, contrary to previous assumptions that they were composed mostly of water. The team's discovery explains why carbon monoxide molecules are more resilient than water molecules when exposed to sunlight.

SourceArizona State University·JournalThe Astrophysical Journal·DateFeb 18, 1999

An Inert Gas Will Keep A Spacecraft In Orbit For 25 Years

Researchers at Hughes Space and Communications have developed a new ion propulsion system that can keep satellites in orbit for up to 25 years, using the inert gas xenon. This innovation reduces the need for frequent fuel replacements, ensuring reliable signal reception and preventing collisions with neighboring satellites.

SourceNew Scientist·JournalThe New Scientist·DateSep 9, 1998