Like irregularities of the road pavements, using appropriate instruments riding on the surface of the rail, measurements of profiles can be collected.
A team at Los Alamos National Laboratory in New Mexico has examined data collected over the past few years from the laboratory's instruments riding aboard five satellites orbiting Earth at various altitudes.
Be it reading, writing poetry, singing, dancing, acting, skateboarding, running, playing an instrument, riding a horse, photography, sewing, playing video games, there's something for everyone.
Approved instruments would ride along on the proposed Clipper mission, "which NASA hopes to launch in the 2020s".
Three cyclists were equipped with a set of identical instruments and rode continuously along a road, the road׳s sidewalk (7 m away) and an off-road path (19 m away), for a total of 6 h and 45 min, over 5 afternoon sampling runs during fall.
► NASA has issued a major call for proposals, inviting planetary scientists to propose scientific instruments for a ride to Jupiter's moon Europa.
But today's announcement of the seven instruments that will ride on the new rover's payload makes it clear that the Mars 2020 rover will be much leaner.
Last week, setting its sights firmly on the outer reaches of our solar system, NASA invited scientists to submit designs for instruments that could ride to Europa on the agency's proposed Clipper mission.
According to Nadja Weisweiler, who works for the German retailer and watch manufacturer Wempe, they are encouraged to take up musical instruments or horseback riding.
Russia's renewed interest in the moon came after a Russian instrument hitched a ride in 2009 with NASA's Lunar Reconnaissance Orbiter.
