Topic: Flagstaff AR
Washington, D.C. – The newest high-resolution images of Pluto from NASA’s New Horizons are both dazzling and mystifying, revealing a multitude of previously unseen topographic and compositional details.
The image below — showing an area near the line that separates day from night — captures a vast rippling landscape of strange, aligned linear ridges that has astonished New Horizons team members.
Washington, D.C. – The latest images from NASA’s New Horizons spacecraft have scientists stunned – not only for their breathtaking views of Pluto’s majestic icy mountains, streams of frozen nitrogen and haunting low-lying hazes, but also for their strangely familiar, arctic look.
This new view of Pluto’s crescent — taken by New Horizons’ wide-angle Ralph/Multispectral Visual Imaging Camera (MVIC) on July 14th and downlinked to Earth on September 13th — offers an oblique look across Plutonian landscapes with dramatic backlighting from the sun.
NASA’s Mars Reconnaissance Orbiter discovers evidence that Gullies on Mars are being created by Dry Ice
Written by Guy Webster
Pasadena, CA – Repeated high-resolution observations made by NASA’s Mars Reconnaissance Orbiter (MRO) indicate the gullies on Mars’ surface are primarily formed by the seasonal freezing of carbon dioxide, not liquid water.
The first reports of formative gullies on Mars in 2000 generated excitement and headlines because they suggested the presence of liquid water on the Red Planet, the eroding action of which forms gullies here on Earth.
Written by Jia-Rui Cook
Pasadena, CA – More than 400 years after its discovery by astronomer Galileo Galilei, the largest moon in the solar system – Jupiter’s moon Ganymede – has finally claimed a spot on the map.
A group of scientists led by Geoffrey Collins of Wheaton College has produced the first global geologic map of Ganymede, Jupiter’s seventh moon. The map combines the best images obtained during flybys conducted by NASA’s Voyager 1 and 2 spacecraft (1979) and Galileo orbiter (1995 to 2003) and is now published by the U. S. Geological Survey as a global map.
Written by DC Agle
Pasadena, CA – Like many of his colleagues at NASA’s Jet Propulsion Laboratory, Pasadena, CA, Shyam Bhaskaran is working a lot with asteroids these days. And also like many of his colleagues, the deep space navigator devotes a great deal of time to crafting, and contemplating, computer-generated 3-D models of these intriguing nomads of the solar system.
But while many of his coworkers are calculating asteroids’ past, present and future locations in the cosmos, zapping them with the world’s most massive radar dishes, or considering how to rendezvous and perhaps even gently nudge an asteroid into lunar orbit, Bhaskaran thinks about how to collide with one.
Written by Francis Reddy
Greenbelt, MD – Astronomers from the University of Maryland at College Park (UMCP) and Lowell Observatory have used NASA’s Swift satellite to check out comet C/2012 S1 (ISON), which may become one of the most dazzling in decades when it rounds the sun later this year.
Using images acquired over the last two months from Swift’s Ultraviolet/Optical Telescope (UVOT), the team has made initial estimates of the comet’s water and dust production and used them to infer the size of its icy nucleus.
Clarksville, TN – There was something strange about the turtle, aside from its enormous head. Normally, the other species in the broad-headed group of map turtles confined themselves to a single major river system, but Austin Peay State University alum Josh Ennen (’05) knew this particular turtle was listed as living in two separate rivers.
“That was interesting, so I started looking at the genetics of the species,” he said. He compared populations of Graptemys gibbonsi (Pascagoula map turtle) from the Pascagoula and Pearl rivers.
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