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Archive for the Space Exploration category

February 14, 2019

Apollo — 50 Years

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Wikipedia dicit:

“The Apollo program, also known as Project Apollo, was the third United States human spaceflight program carried out by the National Aeronautics and Space Administration (NASA), which succeeded in landing the first humans on the Moon from 1969 to 1972. First conceived during Dwight D. Eisenhower’s administration as a three-man spacecraft to follow the one-man Project Mercury which put the first Americans in space, Apollo was later dedicated to President John F. Kennedy’s national goal of “landing a man on the Moon and returning him safely to the Earth” by the end of the 1960s, which he proposed in an address to Congress on May 25, 1961. It was the third US human spaceflight program to fly, preceded by the two-man Project Gemini conceived in 1961 to extend spaceflight capability in support of Apollo.

Kennedy’s goal was accomplished on the Apollo 11 mission when astronauts Neil Armstrong and Buzz Aldrin landed their lunar module (LM) on July 20, 1969, and walked on the lunar surface, while Michael Collins remained in lunar orbit in the command and service module (CSM), and all three landed safely on Earth on July 24. Five subsequent Apollo missions also landed astronauts on the Moon, the last in December 1972. In these six spaceflights, twelve men walked on the Moon.

Apollo ran from 1961 to 1972, with the first manned flight in 1968. It achieved its goal of manned lunar landing, despite the major setback of a 1967 Apollo 1 cabin fire that killed the entire crew during a prelaunch test. After the first landing, sufficient flight hardware remained for nine follow-on landings with a plan for extended lunar geological and astrophysical exploration. Budget cuts forced the cancellation of three of these. Five of the remaining six missions achieved successful landings, but the Apollo 13 landing was prevented by an oxygen tank explosion in transit to the Moon, which destroyed the service module’s capability to provide electrical power, crippling the CSM’s propulsion and life support systems. The crew returned to Earth safely by using the lunar module as a “lifeboat” for these functions. Apollo used Saturn family rockets as launch vehicles, which were also used for an Apollo Applications Program, which consisted of Skylab, a space station that supported three manned missions in 1973–74, and the Apollo–Soyuz Test Project, a joint US-Soviet Union Earth-orbit mission in 1975.”

Video Credit: NASA

 

 

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February 11, 2019

Ultima Thule

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NASA dicit:

“The animation depicts a shape model of Ultima Thule created by the New Horizons science team based on its analysis of all the pre-flyby images sent to Earth so far. The first half of the movie mimics the view from the New Horizons spacecraft as it approached Ultima Thule and has the snowman shape that was so frequently mentioned in the days surrounding the New Year’s 2019 flyby.

The movie then rotates to a side-view that illustrates what New Horizons might have seen had its cameras been pointing toward Ultima Thule only a few minutes after closest approach. While that wasn’t the case, mission scientists have been able to piece together a model of this side-view, which has been at least partially confirmed by a set of crescent images of Ultima Thule. There is still considerable uncertainty in the sizes of Ultima (the larger section, or lobe) and Thule (the smaller) in the vertical dimension, but it’s now clear that Ultima looks more like a pancake than a sphere, and that Thule is also very non-spherical.”

Video Credit: NASA

 

 

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January 26, 2019

Remember Fallen Heroes

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They will always be remembered…

Apollo 1 (January 27, 1967)

Virgil “Gus” Grissom – Commander, Edward White – Command Pilot, Roger Chaffee – Pilot

STS-51 L (January 28, 1986)

Francis R. Scobee – Commander, Michael J. Smith – Pilot, Judith A. Resnik – Mission Specialist 1, Ellison Onizuka – Mission Specialist 2, Ronald E. McNair – Mission Specialist 3, Gregory B. Jarvis – Payload Specialist 1, Sharon Christa McAuliffe – Payload Specialist 2

STS-107 (February 1, 2003)

Rick D. Husband – Commander, William C. McCool – Pilot, Michael P. Anderson – Payload Commander, David M. Brown – Mission Specialist 1, Kalpana Chawla – Mission Specialist 2, Laurel Clark – Mission Specialist 3, Ilan Ramon – Payload Specialist 1

Video credit: NASA

 

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January 23, 2019

New Shepard

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Blue Origin dicit:

“The more we fly the better we get. Safety and reliability are paramount. Our rigorous test program with New Shepard is putting the vehicle through the paces. We have successfully completed several crew capsule escape tests showing that our astronauts will be safe in any phase of flight. In addition to our test program, our payloads program is driving more flights of the system as we iterate on operations and technology in preparation for human spaceflight. All the learnings from the New Shepard program are being flowed into New Glenn development as we scale up our capabilities to serve the orbital market.”

Video Credit: Blue Origin

 

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January 21, 2019

ULA 2018 Launch Highlights

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Wikipedia dicit:

“United Launch Alliance (ULA) is a provider of spacecraft launch services to the United States government. It was formed as a joint venture between Lockheed Martin Space Systems and Boeing Defense, Space & Security in December 2006 by combining the teams at the two companies. U.S. government launch customers include the Department of Defense and NASA, as well as other organizations. With ULA, Lockheed and Boeing held a monopoly on military launches for more than a decade until the US Air Force awarded a GPS satellite contract to SpaceX in 2016.

ULA provides launch services using two expendable launch systems – Delta IV and Atlas V. The Atlas and Delta launch system families have been used for more than 50 years to carry a variety of payloads including weather, telecommunications and national security satellites, as well as deep space and interplanetary exploration missions in support of scientific research. ULA also provides launch services for non-government satellites: Lockheed Martin retains the rights to market Atlas commercially.

Beginning in October 2014, ULA announced that they intended to undertake a substantial restructuring of the company, its products and processes, in the coming years in order to decrease launch costs. ULA is planning on building a new rocket that will be a successor to the Atlas V, using a new rocket engine on the first stage. In April 2015, they unveiled the new vehicle as the Vulcan, with the first flight of a new first stage planned for no earlier than 2020.”

Video Credit: ULA

 

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January 16, 2019

101955 Bennu

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Wikipedia dicit:

“101955 Bennu (provisional designation 1999 RQ36) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table with the second-highest cumulative rating on the Palermo Technical Impact Hazard Scale. It has a cumulative 1-in-2,700 chance of impacting Earth between 2175 and 2199. Its name references Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.

101955 Bennu has a mean diameter of approximately 492 m (1,614 ft; 0.306 mi) and has been observed extensively with the Arecibo Observatory planetary radar and the Goldstone Deep Space Network.

Bennu is the target of the OSIRIS-REx mission which is intended to return samples to Earth in 2023 for further study. On 3 December 2018, the OSIRIS-REx spacecraft arrived at Bennu after a two-year journey. Before attempting to obtain a sample from the asteroid, it will map out Bennu’s surface in detail and orbit the asteroid to calculate its mass.”

Video Credit: NASA

 

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