Tag Archives: Deimos

Phobos may have come from big impact on Mars

Spectral fingerprints of Phobos’ surface support an ancient big crash origin for the Martian moon. The weird shapes and colors of the tiny Martian moons Phobos and Deimos have inspired a long-standing debate about their origins. The dark faces of … Continue reading

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HST images dusty Mars (and Phobos and Deimos) at opposition

With both Saturn and Mars coming to opposition — lying directly opposite the Sun in the sky — this summer, scientists used the Hubble Space Telescope to image both planets. But unlike the previous opposition, Mars is experiencing a planet-wide … Continue reading

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Phobos, Deimos formed after giant impact

Southwest Research Institute scientists posit a violent birth of the tiny Martian moons Phobos and Deimos, but on a much smaller scale than the giant impact thought to have resulted in the Earth-Moon system. Their work shows that an impact … Continue reading

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Mars Express views both moons against Saturn’s rings

New images and video from ESA’s Mars Express show Phobos and Deimos drifting in front of Saturn and background stars, revealing more about the positioning and surfaces of the Red Planet’s mysterious moons. Mars’ two small moons are intriguing objects. … Continue reading

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THEMIS images Phobos and Deimos

Phobos and Deimos, the moons of Mars, are seen in this movie put together from 19 images taken by the Mars Odyssey orbiter’s Thermal Emission Imaging System, or THEMIS, camera. The images were taken in visible-wavelength light. THEMIS also recorded … Continue reading

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Solar eruptions could electrify Martian moons

Powerful solar eruptions could electrically charge areas of the Martian moon Phobos to hundreds of volts, presenting a complex electrical environment that could possibly affect sensitive electronics carried by future robotic explorers, according to a new NASA study. The study … Continue reading

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Did a giant impact create the northern lowlands, both moons, and enrich the mantle?

The origin and nature of Mars are mysterious. The planet has geologically distinct hemispheres with smooth lowlands in the north and cratered, high-elevation terrain in the south. The red planet also has two small oddly-shaped oblong moons and a composition that sets … Continue reading

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Curiosity update: A roving astronomer

Sol 1736-39, June 23, 2017, update by MSL scientists Michael Battalio and Mark Salvatore: Curiosity has presented us with another beautiful workspace following a 16.6 meter drive.  The majority of this week’s activities were focused on imaging Vera Rubin Ridge to … Continue reading

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Curiosity update: Marching ahead towards Vera Rubin Ridge

Sol 1732-33, June 19, 2017, update by MSL scientist Mark Salvatore: As this is my first time contributing to the MSL blog, I’d like to quickly introduce myself to you all. I’m Mark, an MSL Participating Scientist and a faculty … Continue reading

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Mars rings: Not now, but maybe someday

As children, we learned about our solar system’s planets by certain characteristics — Jupiter is the largest, Saturn has rings, Mercury is closest to the sun. Mars is red, but it’s possible that one of our closest neighbors also had … Continue reading

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