ScienceDaily: Astronomy News |
- Producing electricity on the Moon at night
- Companion's comets the key to curious exoplanet system?
- Onboard camera captures Juno's approach to Earth
| Producing electricity on the Moon at night Posted: 20 Dec 2013 08:34 AM PST Scientists have proposed a system of mirrors, processed lunar soil and a heat engine to provide energy to vehicles and crew during the lunar night. This would preclude the need for batteries and nuclear power sources such as those used by the Chinese rover that recently landed on the moon. The lunar night lasts approximately 14 days, during which temperatures as low as -150 ºC have been recorded. This complicates vehicle movement and equipment functioning on the lunar surface, requiring the transport of heavy batteries from Earth or the use of nuclear energy, as exemplified by the Chinese rover Yutu. |
| Companion's comets the key to curious exoplanet system? Posted: 18 Dec 2013 06:58 AM PST The nearby star Fomalhaut A hosts the most famous planetary system outside our own Solar System, containing both an exoplanet and a spectacular ring of comets. Astronomers have just announced a new discovery with the Herschel Space Observatory that has made this system even more intriguing; the least massive star of the three in the Fomalhaut system, Fomalhaut C, has now been found to host its own comet belt. |
| Onboard camera captures Juno's approach to Earth Posted: 11 Dec 2013 10:28 AM PST When NASA's Juno spacecraft flew past Earth early in October 2013, recording a first-of-a-kind movie of the approach was a special assignment for an onboard camera system known as a star tracker. |
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