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Interstellar travel is the hypothetical travel of spacecraft from one star system, solitary star, or planetary system to another. Interstellar travel is expected to prove much more difficult than interplanetary spaceflight due to the vast difference in the scale of the involved distances. Whereas the distance between any two planets in the Solar System is less than 55 astronomical units (AU), stars are typically separated by hundreds of thousands of AU, causing these distances to typically be expressed instead in light-years. Because of the vastness of these distances, non-generational interstellar travel based on known physics would need to occur at a high percentage of the speed of light; even so, travel times would be long, at least decades and perhaps millennia or longer.
Interplanetary spaceflight or interplanetary travel is the crewed or uncrewed travel between stars and planets, usually within a single planetary system. In practice, spaceflights of this type are confined to travel between the planets of the Solar System. Uncrewed space probes have flown to all the observed planets in the Solar System as well as to dwarf planets Pluto and Ceres, and several asteroids. Orbiters and landers return more information than fly-by missions. Crewed flights have landed on the Moon and have been planned, from time to time, for Mars, Venus and Mercury. While many scientists appreciate the knowledge value that uncrewed flights provide, the value of crewed missions is more controversial. Science fiction writers propose a number of benefits, including the mining of asteroids, access to solar power, and room for colonization in the event of an Earth catastrophe.
Robert Zubrin is an American aerospace engineer, author, and advocate for human exploration of Mars. He and his colleague at Martin Marietta, David Baker, were the driving force behind Mars Direct, a proposal in a 1990 research paper intended to produce significant reductions in the cost and complexity of such a mission. The key idea was to use the Martian atmosphere to produce oxygen, water, and rocket propellant for the surface stay and return journey. A modified version of the plan was subsequently adopted by NASA as their "design reference mission". He questions the delay and cost-to-benefit ratio of first establishing a base or outpost on an asteroid or another Apollo program-like return to the Moon, as neither would be able to provide all of its own oxygen, water, or energy; these resources are producible on Mars, and he expects people would be there thereafter.
Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. In-space propulsion exclusively deals with propulsion systems used in the vacuum of space and should not be confused with space launch or atmospheric entry.
Nuclear pulse propulsion or external pulsed plasma propulsion is a hypothetical method of spacecraft propulsion that uses nuclear explosions for thrust. It originated as Project Orion with support from DARPA, after a suggestion by Stanislaw Ulam in 1947. Newer designs using inertial confinement fusion have been the baseline for most later designs, including Project Daedalus and Project Longshot.
Russell Louis "Rusty" Schweickart is an American aeronautical engineer, and a former NASA astronaut, research scientist, U.S. Air Force fighter pilot, as well as a former business executive and government executive.
The B612 Foundation is a private nonprofit foundation headquartered in Mill Valley, California, United States, dedicated to planetary science and planetary defense against asteroids and other near-Earth object (NEO) impacts. It is led mainly by scientists, former astronauts and engineers from the Institute for Advanced Study, Southwest Research Institute, Stanford University, NASA and the space industry.
Skylon is a series of concept designs for a reusable single-stage-to-orbit spaceplane by the British company Reaction Engines Limited (Reaction), using SABRE, a combined-cycle, air-breathing rocket propulsion system.
Alan Bond is a British mechanical and aerospace engineer, who served as Managing Director of Reaction Engines Ltd and associated with Project Daedalus, Blue Streak missile, HOTOL, Reaction Engines Skylon and the Reaction Engines A2 hypersonic passenger aircraft.
The Journal of the British Interplanetary Society (JBIS) is a monthly peer-reviewed scientific journal that was established in 1934. The journal covers research on astronautics and space science and technology, including spacecraft design, nozzle theory, launch vehicle design, mission architecture, space stations, lunar exploration, spacecraft propulsion, robotic and crewed exploration of the solar system, interstellar travel, interstellar communications, extraterrestrial intelligence, philosophy, and cosmology. It is published monthly by the British Interplanetary Society.
Robert Albert Charles Esnault-Pelterie was a French aircraft designer and spaceflight theorist. He is referred to as being one of the founders of modern rocketry and astronautics, along with the Russian Konstantin Tsiolkovsky, the Germans Hermann Oberth, Fritz von Opel, Wernher Von Braun and the American Robert H. Goddard.
The International Astronautical Congress (IAC) is an annual meeting of the actors in the discipline of space science. It is hosted by one of the national society members of the International Astronautical Federation (IAF), with the support of the International Academy of Astronautics (IAA) and the International Institute of Space Law (IISL). It consists of plenary sessions, lectures and meetings. The IAC is attended by the agency heads and senior executives of the world's space agencies.
Reaction Engines Limited is a British aerospace manufacturer based in Oxfordshire, England.
Hayabusa2 is an asteroid sample-return mission operated by the Japanese state space agency JAXA. It is a successor to the Hayabusa mission, which returned asteroid samples for the first time in June 2010. Hayabusa2 was launched on 3 December 2014 and rendezvoused in space with near-Earth asteroid 162173 Ryugu on 27 June 2018. It surveyed the asteroid for a year and a half and took samples. It left the asteroid in November 2019 and returned the samples to Earth on 5 December 2020 UTC. Its mission has now been extended through at least 2031, when it will rendezvous with the small, rapidly-rotating asteroid 1998 KY26.
Dandridge MacFarlan Cole was an American aerospace engineer, futurist, lecturer, and author.
Deep space exploration is the branch of astronomy, astronautics and space technology that is involved with exploring the distant regions of outer space. However, there is little consensus on the meaning of "distant" regions. In some contexts, it is used to refer to interstellar space. The International Telecommunication Union defines "deep space" to start at a distance of 2 million km from the Earth's surface. NASA's Deep Space Network has variously used criteria of 16,000 to 32,000 km from Earth. Physical exploration of space is conducted both by human spaceflights and by robotic spacecraft.
Luigi Gussalli (1885–1950), engineer and inventor, was a pioneer of motor cars. He turned to astronautics in the 1920s, corresponding with world leaders in this field, such as Oberth and Goddard and exchanging with them theories on interplanetary flight and its prospects. He developed a special double-reaction engine, wrote extensively on multi-stage rockets and published two books on space travel. The first one, in 1923, described a space flight to the Moon, the second one, written in 1946, is even more astonishing in its theme: “Interplanetary travels by means of solar radiations”.
Eugene F. Lally was American aerospace engineer. He worked in the early 1960s on U.S. interplanetary space programs. Beside his space programs he was also an inventor and developed non-space products with his own company Dynamic Development Co. which he founded in the early 1960s. He later became an active amateur photographer and lubrication product entrepreneur. Lally contributed articles for popular space, astrobiology, photography, travel, and archaeology magazines. He was also a speaker at local space exploration and extraterrestrial intelligence (UFO) society meetings where he gave first-hand accounts of the early U.S. space program, commentaries on current U.S. space exploration activities and the search for extraterrestrial intelligence.
Arthur Valentine Cleaver OBE FRAeS was a distinguished British rocket engineer. He co-authored a paper which discussed the possibilities and problems of nuclear rocket engines in 1948. After the Second World War he developed de Havilland's Sprite and Spectre rocket engines. He moved to Rolls-Royce in 1957 and in 1960 he became general manager and chief engineer of the Rolls-Royce's rocket departments, where he was responsible for the engines which powered the Blue Streak missile and Black Arrow launch vehicle. While the ELDO vehicle was ultimately unsuccessful and abandoned, the Blue Streak vehicle and its engines worked perfectly on every launch, and Cleaver was awarded the OBE for his part in developing them.
Universal Space Interface Standard (USIS) is a physical interface between medium to large crewed or uncrewed spacecraft such as satellites, space stations and service tugs. It is designed to be suitable for adoption as an industry standard. Development is currently being undertaken by Mark Hempsell at Hempsell Astronautics Ltd. The rationale for the creation of an industry standard for spacecraft interfaces is that the number of applications for space vehicles is likely to increase greatly in the future. If each craft is utilising a common interface many new applications become feasible. This is somewhat analogous to the benefits which have been gained by widespread adoption of the USB connector in computing or even the standardisation of AC power plugs and sockets across some parts of the world.
References
- ↑ "Hempsell Astronautics Company Information" . Retrieved 28 September 2014.
- ↑ "USIS Association" . Retrieved 28 September 2014.
- ↑ "CNN Skylon Article". CNN. Retrieved 28 September 2014.
- ↑ "Reaction Engines Ltd. News". Reaction Engines. 4 December 2013. Archived from the original on 18 October 2014. Retrieved 28 September 2014.
- 1 2 3 4 "British Interplanetary Society Archives" . Retrieved 28 September 2014.
- ↑ "Begann "Zorn Gottes" im Ötztal?". 29 October 2011.
- ↑ Franz, Angelika (9 April 2008). "Frühe Astronomie: Zerstörte ein Asteroid Sodom und Gomorrha?" – via Spiegel Online.