Fewer trains are expected to run through a $15 billion tunnel in peak periods than promised, as a day-one timetable is firmed up.
NASA’s Juno Back to Normal Operations After Entering Safe Mode
The spacecraft was making its 71st close approach to Jupiter when it unexpectedly entered into a precautionary status. Data received from NASA’s Juno mission indicates the solar-powered spacecraft went into safe mode twice on April 4 while the spacecraft was flying by Jupiter. Safe mode is a precautionary status that a spacecraft enters when it […]
Hubble Helps Determine Uranus’ Rotation Rate with Unprecedented Precision
An international team of astronomers using the NASA/ESA Hubble Space Telescope has made new measurements of Uranus’ interior rotation rate with a novel technique, achieving a level of accuracy 1,000 times greater than previous estimates. By analyzing more than a decade of Hubble observations of Uranus’ aurorae, researchers have refined the planet’s rotation period and […]