Word: scientists
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Dates: during 1990-1999
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After bombarding the reddish dirt with helium nuclei and analyzing the resulting patterns of radiation, the spectrometer revealed that the soil was rich in iron and virtually identical to that examined at other sites 21 years earlier by the Viking landers. This suggested to scientists that Martian topsoil is widely distributed by the planet's frequent global dust storms. Why the reddish hue? "The surface of Mars is rusting," explains Jim Bell, a Cornell University scientist...
Sojourner next turned toward Barnacle Bill, a 10-in.-high rock lying within arm's length of the lander, and closed in to sniff out its mineral content. Displaying a picture of the rover at the rock, the ever buoyant project scientist Matthew Golombek joked, "Here we have proof that Sojourner sort of nestled up and kissed Barnacle Bill." The high-tech buss, profferred by the rover's X-ray spectrometer, produced an unexpected finding: the rock was apparently loaded with silicon or silicon dioxide, commonly known as quartz...
...five hole from Earth to Mars," said a Pathfinder scientist. "And we shot a four...
...speed that caused it to experience deceleration forces nearly 20 times as great as than Earth's gravity. In order to survive, the spaceship had to approach the planet at an angle of about 14.2[degrees]. "Go in too steep and you could crash and burn," says Pathfinder project scientist Matthew Golombek. "Go in too shallow and you skip back...
Rich Terrile, a J.P.L. planetary scientist, doesn't agree. "The new missions are cheap," he says. "So if one fails, it's not the end of the program. We're not going to build the dinosaurs anymore...