January 22, 2017

Saturn’s shepherd moon Daphnis makes waves

January 19, 2017

NASA’s Cassini spacecraft has captured the first close-up view of Daphnis, one of at least 62 moons found orbiting Saturn, plowing a path through the planet’s icy rings and raising waves in its wake.

Hunt for water at Ceres goes underground

December 23, 2016

NASA’s Dawn spacecraft has continued its survey of the dwarf planet Ceres this year, discovering rock-bound ice hidden just beneath the airless world’s rugged surface and a handful of icy outcrops inside craters in the northern hemisphere, raising hopes that Ceres could have once held a buried habitable ocean of liquid water.

Mars rover’s drill out of action

December 18, 2016

The rock-coring drill fixed to the end of the Curiosity rover’s robot arm has suspended operations to allow engineers on the ground to diagnose, and officials hope correct, a problem traced to the mechanism that pushes the drill bit onto rocks to collect powder samples.

Juno recovers from reboot, but propulsion problem lingers

October 28, 2016

NASA’s Juno spacecraft will stay in its current long-period orbit around Jupiter until at least February, and perhaps longer, as engineers study balky valves inside the science probe’s propulsion system and an unexpected computer reboot that interrupted key functions of the orbiter earlier this month.

Mission managers keeping Juno in elongated orbit until December

October 15, 2016

Ground teams are buying more time to study two sluggish valves inside the Juno spacecraft’s fuel pressurization system and postponing a major engine burn that was scheduled for next week to reshape the probe’s orbit around Jupiter, officials said Friday.

NASA official says new mission selections on track despite InSight woes

September 7, 2016

A $150 million cost overrun and two-year launch delay for NASA’s InSight Mars mission could mean fewer opportunities for new planetary science missions in the next few years, but the head of the agency’s science division said this week NASA will still approve development of at least one new solar system probe in December.

Juno beams back dramatic new pictures of Jupiter

September 2, 2016

NASA’s Juno spacecraft, making its first scientific run over Jupiter’s poles Aug. 27, captured remarkable images of Jupiter’s atmosphere, showing that the equatorial bands and zones familiar to even amateur astronomers completely disappear at high latitudes.

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