The science of discovery
Space, Earth, nature and engineering. Since 1995.
Our reporting
Dust from comet 67P filled Rosetta's star-tracker field with false stars during a March 2015 flyby, degrading attitude control and changing months of mission planning.
Cassini's only close look at tiny Methone found no crater larger than about 130 metres. Its smooth shape points to an extraordinarily porous moon whose surface cannot preserve relief easily.
An evolutionary superpower refined over millions of years crumbles against a single streetlight.
JPL's measured gravity and radius put a surface-grazing Deimos orbit near 14.2 km/h and local escape near 20.1 km/h, although Mars and the moon's irregular shape complicate real flight.
A bureaucratic blunder turned a $995 impulse buy into an $1.8 million windfall—if you can survive a government lawsuit claiming the moon dust was never yours to sell.
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