NASA's James Webb Space Telescope to reveal secrets of the Red Planet

ScienceDaily | 2/20/2018 | Staff
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Mars will be targeted as part of a Guaranteed Time Observation (GTO) project led by Heidi Hammel, a planetary astronomer and executive vice president of the Association of Universities for Research in Astronomy (AURA) in Washington, D.C. The GTO program provides dedicated time to the scientists who have worked with NASA to craft the science capabilities of Webb throughout its development. Hammel was selected by NASA as a JWST Interdisciplinary Scientist in 2003. Mars will be visible to Webb from May to September 2020 during its first year of operations, known as Cycle 1.

"Webb will return extremely interesting measurements of chemistry in the Martian atmosphere," noted Hammel. "And most importantly, these Mars data will be immediately available to the planetary community to enable them to plan even more detailed Mars observations with Webb in future cycles."

Webb - Observations - Mars - Potential - Discoveries

"We are all looking forward to Webb's observations of Mars. I just know they will be fantastic, with the potential for immediate scientific discoveries," said Jim Green, director of NASA's Planetary Science Division, NASA Headquarters, Washington, D.C.

Mars has been visited by more missions than any other planet in our solar system. It is currently orbited by six active spacecraft, while two rovers trundle across its surface. Webb offers several capabilities that complement these up-close missions.

Asset - Webb - Ability - Snapshot - Disk

One key asset is Webb's ability to take a snapshot of the entire disk of Mars at once. Orbiters, in contrast, take time to make a full map and therefore can be affected by day-to-day variability, while rovers can only measure one location. Webb also benefits from excellent spectral resolution (the ability to measure small differences in wavelengths of light) and a lack of interfering atmosphere that plagues ground-based measurements from Earth.

That said, observing Mars with Webb will not be easy. "Webb is designed to be able to detect extremely faint...
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