When Dr. Henry Hsieh entered graduate school, he was interested in comets for a fairly simple reason: they seemed exciting.

Top: Black and white image of the Moon from Moon Mineralogy Mapper data. Bottom: Map of water on the Moon. The different colors represent different shapes to the water absorption and correlate with ...

Experience the intersection of art and planetary science through the remarkable works of renowned artist, planetary scientist, and Planetary Science Institute co-founder William K. Hartmann and other ...

The painting on the left is an artist’s conception of a plume eruption on Saturn’s moon Enceladus. The image on the right is a photo of two researchers in the Utah desert collecting effluent from the ...

Observations of the North Polar Layered Deposits exhibiting spiral troughs that confound flow models. Left: Mariner 9 image taken in 1972. (Credit Credit: NASA/JPL) Right: Mars Express image taken in ...

Pluto is on an icy march away from the Sun. In the year 2114, it will turn back, but until then, its elliptical orbit will carry it to colder and darker parts of the outer solar system. This is ...

Long period comet C/2006 P1 (McNaught) over the Pacific ocean, as imaged from Paranal Observatory in 2007. Credit: ESO/Sebastian Deiries The Gaia mission has allowed researchers to understand the ...

Illustration of the uncertainty of Earth's orbit 56 million years ago due to a potential past passage of the Sun-like star HD7977 2.8 million years ago. Each point's distance from the center ...

Oct. 28, 2024, TUCSON, Ariz. – The Moon and Mars are pocked with giant impact craters acquired very long ago, while there appears to be a dearth of them on Earth and Venus. Time may have healed many ...

Lava tubes are high priority targets for in situ exploration of Mars, with the potential to provide access to subsurface cavities that could facilitate scientific studies of the Martian subsurface as ...

An artist's concept of NASA’s Mars Reconnaissance Orbiter, which has been orbiting the Red Planet since 2006. The antenna is part of SHARAD, a radar that peers below the Martian surface. Credit: ...

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