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Nasa's Maven Probe Observes Mars Moon Phobos in New Light

Nasa's Maven Probe Observes Mars Moon Phobos in New Light

By Indo-Asian News Service | Updated: 1 March 2016 13:58 IST

Nasa scientists are closer to solving the mystery of how Mars' moon Phobos was formed.

In late November and early December 2015, Nasa's Mars Atmosphere and Volatile Evolution (Maven) mission made a series of close approaches to the Martian moon Phobos, collecting data from within 500 kms of the moon.

Among the data returned were spectral images of Phobos in the ultraviolet.

The images will allow Maven scientists to better assess the composition of this enigmatic object whose origin is unknown.

Comparing Maven's images and spectra of the surface of Phobos to similar data from asteroids and meteorites will help planetary scientists understand the moon's origin - whether it is a captured asteroid or was formed in orbit around Mars.

The Maven data, when fully analysed, will also help scientists look for organic molecules on the surface.

Evidence for such molecules has been reported by previous measurements from the ultraviolet spectrograph on the Mars Express spacecraft.

The observations were made by the Imaging Ultraviolet Spectrograph instrument aboard Maven.

Maven's principal investigator is based at the University of Colorado's Laboratory for Atmospheric and Space Physics while Nasa's Goddard Space Flight Center in Greenbelt, Maryland, manages the Maven project.

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