Pluto: The Other Red Planet

What color is Pluto? The answer, revealed in the first maps made from New Horizons data, turns out to be shades of reddish brown. Although this is reminiscent of Mars, the cause is almost certainly very different. On Mars the coloring agent is iron oxide, commonly known as rust. On the dwarf planet Pluto, the reddish color is likely caused by hydrocarbon molecules that are formed when cosmic rays and solar ultraviolet light interact with methane in Pluto’s atmosphere and on its surface.

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Johns Hopkins Applied Physics Lab CubeSats Complete Lengthy Missions

Artist’s impression of an ORS Tech CubeSat in orbit. (Credit: Johns Hopkins University Applied Physics Laboratory)
Artist’s impression of an ORS Tech CubeSat in orbit. (Credit: Johns Hopkins University Applied Physics Laboratory)

BALTIMORE, Md. (JHU APL PR) — After 18 months in orbit — months longer than typical for spacecraft in their class — the twin ORS Tech 1 and 2 CubeSats recently completed their final trip into Earth’s atmosphere.

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NASA Selects 18 Proposals for Asteroid Redirect Mission Studies

In this concept image, the robotic vehicle deploys an inflatable bag to envelop a free-flying small asteroid before redirecting it to a distant retrograde lunar orbit. (Credit: NASA)
In this concept image, the robotic vehicle deploys an inflatable bag to envelop a free-flying small asteroid before redirecting it to a distant retrograde lunar orbit. (Credit: NASA)

WASHINGTON (NASA PR) — NASA has selected 18 proposals for studies under the Asteroid Redirect Mission Broad Agency Announcement (BAA).  These six-month studies will mature system concepts and key technologies and assess the feasibility of potential commercial partnerships to support the agency’s Asteroid Redirect Mission, a key part of the agency’s stepping stone path to send humans to Mars.

The agency is working on two concepts for the mission. The first concept would fully capture a very small asteroid in free space and the other would retrieve a boulder off of a much larger asteroid. Both concepts would redirect an asteroid mass less than 10 meters in size to orbit the moon. Astronauts aboard the Orion spacecraft launched on the Space Launch System (SLS) would rendezvous with the captured asteroid mass in lunar orbit and collect samples for return to Earth.

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