8/23/2021

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Directly across from the Officer Candidate School Hall of Honor and next to the Fife & Drum Restaurant stands the Ranger Hall of Honor. This gallery preserves the legacy of the most extraordinary soldiers in the military, the U.S. Army Rangers. Here, we honor the nearly 200 Rangers who have been inducted into the Ranger Hall of Fame since 1992.

Selection criteria for the Ranger Hall of Fame is as unique as Ranger history. To be eligible for selection, a person may be deceased or have been separated or retired from active military service for at least three years at the time of nomination. He must have served in a Ranger unit in combat or be a successful graduate of the U.S. Army Ranger School. Honorary induction may also be conferred.

A timeline describes the evolution and historical importance of the Rangers, with weapons and uniforms on display from World War II, Korea, Vietnam, and Grenada. A computerized database of inductees is also available.

Ranger Hall of Honor: Ranger Tab

Ranger Hall of Honor: Kiosk

Ranger Hall of Honor: Inductees

Rangers managing director Stewart Robertson has been accused of making 'baseless, damaging and self-serving attacks' by his fellow Scottish Professional Football League board members. Rangers Football Club was founded in 1872 and is one of the 11 original members of the Scottish Football League and remained in the top division continuously until the liquidation of The Rangers Football Club PLC, at the end of the 2011–12 season, when the club was demoted to the third tier.The clubs home ground, Ibrox Stadium, is in the south-west of Glasgow, Scotland. Rangers Football Club was founded in 1872 and is one of the 11 original members of the Scottish Football League and remained in the top division continuously until the liquidation of The Rangers Football Club PLC, at the end of the 2011–12 season, when the club was demoted to the third tier.

Ranger Hall of Honor: Display Case

Ranger Hall of Honor: Display Case

Ranger Hall of Honor: Timeline

© Provided by Space NASA's Perseverance Mars rover displaying where its MMRTG would be inserted, between the panels on the right marked by gold tube, before the power system was inserted.

NASA's Perseverance Mars rover is ready to roll on the surface of the Red Planet now that its nuclear power source has been installed.

That update came via Tory Bruno, head of United Launch Alliance, which is responsible for launching Perseverance on its way next Thursday (July 30). The installation is a vital step toward liftoff for the rover, which will rely on the power system, called a Multi-Mission Radioisotope Thermoelectric Generator (MMRTG), to keep its instruments running and to stay warm during the cold Martian nights and winters.

'The #MarsPerseverance MMRTG is installed and doing well,' Bruno wrote on Twitter on Wednesday (July 22). 'This Red Planet dune buggy is fueled and ready to go!'

In Photos: NASA's Mars Perseverance rover mission to the Red Planet

Download patch dapodik 2021 a. The MMRTG is designed to power the rover for up to 14 years, far beyond the $2.7 billion spacecraft's initial mission lifetime of nearly two Earth years, or one Martian year. It is based heavily on the system that powers NASA's Curiosity rover, which launched in 2011 and has been roving the Red Planet since August 2012.


Gallery: In photos: NASA's Mars Perseverance rover mission to the Red Planet (Space)

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When such a system launches, it can produce about 110 watts of power, according to NASA and the Department of Energy (DOE). The MMRTG contains radioactive plutonium, which naturally decays into more stable atoms. As it does so, it releases heat, which the MMRTG converts into electricity. Excess heat keeps a spacecraft's instruments warm enough to keep working smoothly.

Related: Nuclear generators for NASA deep space probes (infographic)

© Provided by Space An image of the MMRTG for NASA's Perseverance rover seen during testing. (Image credit: NASA/JPL-Caltech)

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Although an MMRTG runs on nuclear power, it isn't the same form of plutonium as what is used in bombs and cannot explode, according to NASA and the DOE.

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For Mars missions, MMRTGs offer a key benefit: Unlike solar panels, they aren't affected by local weather, which means a spacecraft that carries one isn't vulnerable to dust storms, as NASA's Opportunity rover was.

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Another MMRTG is scheduled to power NASA's Dragonfly mission, a rotorcraft designed to explore the hazy skies of Saturn's massive moon Titan in 2026.

Email Meghan Bartels at [email protected] or follow her on Twitter @meghanbartels. Follow uson Twitter @Spacedotcom and on Facebook.