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Triton Hopper
''Triton Hopper'' is a proposed NASA lander to Triton, the largest moon of Neptune. The idea is to harvest the abundant nitrogen ice on the surface of Triton and use it as propellant for multiple short flights and explore a variety of locations. The concept transitioned in March 2018 to Phase II to refine their designs and explore aspects of implementing the new technology. History Triton is the largest moon of Neptune. In 1989, ''Voyager 2'' flew past the moon at a distance of 40,000 km, and discovered several cryovolcanoes on its surface. Triton is geologically active; its surface is young and has relatively few impact craters. It has a very thin atmosphere. The ''Triton Hopper'' concept started Phase I in 2015, and it transitioned in March 2018 to Phase II, where the new technologies are being matured by NASA's Institute for Advanced Concepts ( NIAC). Overview The ''Triton Hopper'' concept proposes the use of a radioisotope rocket engine that would collect nitrogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triton (moon)
Triton is the largest natural satellite of the planet Neptune, and was the first Neptunian moon to be discovered, on October 10, 1846, by English astronomer William Lassell. It is the only large moon in the Solar System with a retrograde orbit, an orbit in the direction opposite to its planet's rotation. Because of its retrograde orbit and composition similar to Pluto, Triton is thought to have been a dwarf planet, captured from the Kuiper belt. At in diameter, it is the seventh-largest moon in the Solar System, the only satellite of Neptune massive enough to be in hydrostatic equilibrium, the second-largest planetary moon in relation to its primary (after Earth's Moon), and larger than Pluto. Triton is one of the few moons in the Solar System known to be geologically active (the others being Jupiter's Io and Europa, and Saturn's Enceladus and Titan). As a consequence, its surface is relatively young, with few obvious impact craters. Intricate cryovolcanic and tectonic te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocket Propellant
Rocket propellant is the reaction mass of a rocket. This reaction mass is ejected at the highest achievable velocity from a rocket engine A rocket engine uses stored rocket propellants as the reaction mass for forming a high-speed propulsive jet of fluid, usually high-temperature gas. Rocket engines are reaction engines, producing thrust by ejecting mass rearward, in accordanc ... to produce thrust. The energy required can either come from the propellants themselves, as with a chemical rocket, or from an external source, as with ion engines. Overview Rockets create thrust by expelling mass rear-ward, at high velocity. The thrust produced can be calculated by multiplying the mass flow rate of the propellants by their exhaust velocity relative to the rocket (specific impulse). A rocket can be thought of as being accelerated by the pressure of the combusting gases against the combustion chamber and Rocket engine nozzle, nozzle, not by "pushing" against the air behind or belo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missions To Neptune
Mission (from Latin ''missio'' "the act of sending out") may refer to: Organised activities Religion *Christian mission, an organized effort to spread Christianity *Mission (LDS Church), an administrative area of The Church of Jesus Christ of Latter-day Saints *The Christian Mission, the former name of the Salvation Army Government and military *Bolivarian missions, a series of social programs created during Hugo Chávez's rule of Venezuela *Diplomatic mission, a diplomatic outpost in a foreign territory *Military operation *Mission statement, a formal, short, written articulation of an organization's purpose *Sortie or combat mission, a deployment or dispatch of a military unit *Space mission, a journey of craft into outer space Geography Australia * Mission River, Queensland, a locality in the Shire of Cook and the Aboriginal Shire of Napranum *Mission River (Queensland), a river in Australia Canada *Mission, British Columbia, a district municipality *Mission, Calgary, A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proposed NASA Space Probes
Proposal(s) or The Proposal may refer to: * Proposal (business) * Research proposal * Proposal (marriage) * Proposition, a proposal in logic and philosophy Arts, entertainment, and media * ''The Proposal'' (album) Films * ''The Proposal'' (1957 film), an Australian television play based on Chekhov's 1890 play * ''The Proposal'' (2001 film), starring Nick Moran, Jennifer Esposito, and Stephen Lang * ''The Proposal'' (2009 film), starring Sandra Bullock and Ryan Reynolds * ''The Proposal'' (2022 film), starring Joe Joseph and Amara Raja * " La propuesta" ("The Proposal"), a short story in the 2014 Argentina anthology film ''Wild Tales'' Literature * ''Proposals (play)'', a 1997 play by Neil Simon * ''The Proposal'' (novel), 1999 and 35th book in the ''Animorphs'' series by K.A. Applegate * ''The Proposal'', alternative title of Chekhov's 1890 play ''A Marriage Proposal'' Television * ''The Proposal'' (American TV series), a 2018 reality dating series * The Proposal (Aust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trident (spacecraft)
''Trident'' is a space mission concept to the outer planets proposed in 2019 to NASA's Discovery Program. The concept includes flybys of and with a focus on Neptune's largest moon . In 2020, Trident was selected along with three other Discovery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europa Lander (NASA)
The Europa Lander is a proposed astrobiology mission concept by NASA to send a lander to Europa, an icy moon of Jupiter. If funded and developed as a large strategic science mission, it would be launched in 2027 to complement the studies by the ''Europa Clipper'' orbiter mission and perform analyses on site. The objectives of the mission are to search for biosignatures at the subsurface ≈10 cm, to characterize the composition of non-ice near-subsurface material, and determine the proximity of liquid water and recently erupted material near the lander's location. History NASA had previously evaluated a Europa Lander concept in 2005 with the Europa Lander Mission concept. Also, a lander was evaluated in 2012. There was continued support for Europa missions, including in 2014, when the U.S. Congress House Appropriations Committee announced a bipartisan bill that included US$80 million in funding to continue the Europa mission concept studies. The United States Con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comet Hopper
Comet Hopper (CHopper) was a proposed lander to NASA's Discovery Program that, had it been selected, would have orbited and landed multiple times on Comet Wirtanen as it approached the Sun. The proposed mission was led by Jessica Sunshine of the UMD, working with Lockheed Martin to build the spacecraft and the NASA Goddard Spaceflight Center to manage the mission. History The Comet Hopper mission was one of three Discovery Program finalists that received million in May 2011 to develop a detailed concept study. The other two missions were InSight and Titan Mare Explorer. After a review in August 2012, NASA selected the InSight mission. Scientific goals The CHopper mission had three primary science goals for the 7.3 years of its lifetime. At roughly 4.5 AU the spacecraft would have rendezvoused with Comet Wirtanen to map the spatial heterogeneity of surface solids as well as gas and dust emissions from the coma - the nebulous envelope around the nucleus of a comet. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity
In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the strong interaction, 1036 times weaker than the electromagnetic force and 1029 times weaker than the weak interaction. As a result, it has no significant influence at the level of subatomic particles. However, gravity is the most significant interaction between objects at the macroscopic scale, and it determines the motion of planets, stars, galaxies, and even light. On Earth, gravity gives weight to physical objects, and the Moon's gravity is responsible for sublunar tides in the oceans (the corresponding antipodal tide is caused by the inertia of the Earth and Moon orbiting one another). Gravity also has many important biological functions, helping to guide the growth of plants through the process of gravitropism and influencing the circ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radioisotope Rocket
A radioisotope rocket or radioisotope thermal rocket is a type of thermal rocket engine that uses the heat generated by the decay of radioactive elements to heat a working fluid, which is then exhausted through a rocket nozzle to produce thrust. They are similar in nature to nuclear thermal rockets such as NERVA, but are considerably simpler and often have no moving parts. Alternatively, radioisotopes may be used in a radioisotope electric rocket, in which energy from nuclear decay is used to generate the electricity used to power an electric propulsion system. The basic idea is a development of existing radioisotope thermoelectric generator, or RTG, systems, in which the heat generated by decaying nuclear fuel is used to generate power. In the rocket application the generator is removed, and the working fluid is instead used to produce thrust directly. Temperatures of about 1500 to 2000 °C are possible in this system, allowing for specific impulses of about 700 to 800 seco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voyager 2 Triton 14bg R90ccw Colorized
Voyager may refer to: Computing and communications * LG Voyager, a mobile phone model manufactured by LG Electronics * NCR Voyager, a computer platform produced by NCR Corporation * Voyager (computer worm), a computer worm affecting Oracle databases * Voyager (library program), the integrated library system from Ex Libris Group * Voyager (web browser), a web browser for Amiga computers * HP Voyager series, code name for a Hewlett-Packard series of handheld programmable calculators Transport Air * Airbus Voyager, Royal Air Force version of the Airbus A330 MRTT * Frequent flyer program of South African Airways * Egvoyager Voyager 203, an Italian ultralight aircraft * Raj Hamsa Voyager, an Indian ultralight trike design * Rutan Voyager, the first airplane to fly around the world nonstop without refuelling Land * Bombardier Voyager, a high-speed train operated in the United Kingdom ** Bombardier ''Voyager'' (British Rail Class 220), a non-tilting train built 2000–2001 ** Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vice (magazine)
''Vice'' (stylized in all caps) is a Canadian-American magazine focused on lifestyle, arts, culture, and news/politics. Founded in 1994 in Montreal as an alternative punk magazine, the founders later launched the youth media company Vice Media, which consists of divisions including the printed magazine as well as a website, broadcast news unit, a film production company, a record label, and a publishing imprint. As of February 2015, the magazine's editor-in-chief is Ellis Jones. History Founded by Suroosh Alvi, Gavin McInnes, and Shane Smith (the latter two being childhood friends), the magazine was launched in 1994 as the ''Voice of Montreal'' with government funding. The intention of the founders was to provide work and a community service. When the editors later sought to dissolve their commitments with the original publisher, Alix Laurent, they bought him out and changed the name to ''Vice'' in 1996. Richard Szalwinski, a Canadian software millionaire, acquired the magazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA Institute For Advanced Concepts
The NASA Institute for Advanced Concepts (NIAC) is a NASA program for development of far reaching, long term advanced concepts by "creating breakthroughs, radically better or entirely new aerospace concepts". The program operated under the name NASA Institute for Advanced Concepts from 1998 until 2007 (managed by the Universities Space Research Association on behalf of NASA), and was reestablished in 2011 under the name NASA Innovative Advanced Concepts and continues to the present. The NIAC program funds work on revolutionary aeronautics and space concepts that can dramatically impact how NASA develops and conducts its missions. History The ''NASA Institute for Advanced Concepts'' (NIAC) was a NASA-funded program that was operated by the Universities Space Research Association (USRA) for NASA from 1998 until its closure on 31 August 2007. NIAC was to serve as "an independent open forum, a high-level point of entry to NASA for an external community of innovators, and an external ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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