NASA has selected a Caltech-led mission to send a small satellite to quantify and study water on the Moon. The project is one of three finalists selected from more than a dozen proposals for small satellite missions - at least one of which is expected to move to final selection and flight.

The Lunar Trailblazer would follow up on one of the most surprising discoveries of the late 2000s: the detection of water on the Moon's surface, long thought impossible because of its exposure to the vacuum of space. Trailblazer would map the tiny amounts of water and of hydroxyl (a compound of hydrogen and oxygen) on the sunlit side of the Moon, determining whether they change with time. Trailblazer would also peer into shadowed craters to map ice deposits, glimpses of which were observed on prior missions.

The mission proposal is led by Bethany Ehlmann, professor of planetary science at Caltech and research scientist at JPL, which Caltech manages for NASA. "Our team is excited to move forward to map water on the Moon. The water cycle of airless bodies is one of the solar system's most surprising occurrences and is important for the support of future human lunar exploration," Ehlmann says.

The relatively tiny Trailblazer satellite, which would measure just 5 meters in length with its solar panels fully deployed, would spend a year orbiting the Moon at a height of 100 kilometers, scanning it with two key instruments: a shortwave imaging spectrometer built by JPL and a multispectral thermal imager built by the University of Oxford.

The spectrometer would image the surface in multiple wavelengths in the infrared, searching for the signature of water - either in the form of ice or bound to minerals. Meanwhile, the thermal imager would map the temperature, physical properties, and composition of regions where the spectrometer detects water.

The end result would be a high-resolution map - at 100 meters per pixel - that charts the form, abundance, and distribution of water while also collecting information about the environments where that water exists. The mission's leaders hope that such information could not only fill in the gaps of our understanding of the Moon but also chart a course for future human exploration.

The mission was proposed as part of NASA's Small Innovative Missions for Planetary Exploration (SIMPLEx) Program for low-budget missions that are capable of major planetary surveys. "We're eager to lead the way in science and discovery using this new small-satellite NASA mission class. The opportunities are huge," Ehlmann says.

The mission will now receive funding for up to one year followed by a NASA preliminary design review. At that time, NASA will determine when and if it will be selected for a flight. The satellite could launch within two to four years, Ehlmann says. Caltech would be responsible for managing the project and for the scientific leadership, with support from JPL. Ball Aerospace in Boulder, Colorado, would build the spacecraft.

Related Links
California Institute Of Technology
Mars News and Information at MarsDaily.com
Lunar Dreams and more

Tweet

Thanks for being here; We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain. With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords. Our news coverage takes time and effort to publish 365 days a year. If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Contributor $5 Billed Once credit card or paypal		SpaceDaily Monthly Supporter $5 Billed Monthly paypal only

The Second Moon Race
Gerroa, Australia (SPX) Mar 13, 2017
The US and China are in an undeclared race back to the Moon. At first glance it's easy to dismiss China's efforts as being little more than what the US and Russia achieved decades ago. And while the pace of China's manned launches has been slow with over a year in many cases between launches; looks can be deceptive and China has achieved each critical step towards building a permanent space station within the next few years. Meanwhile, its overall space program builds out each critical element to ... read more