Search results

{{Short description|Hypothetical spacecraft propulsion concept using external force fields momentum for transportation} ...ead [[momentum]] of the [[spacecraft]] is changed by an interaction of the spacecraft with external [[Field (physics)|force fields]], such as [[Gravitational fie ...

...alf of the journey the propulsion system would constantly accelerate the [[spacecraft]] toward its destination, and for the second half of the journey it would c Constant-thrust and constant-acceleration trajectories both involve a spacecraft firing its engine continuously. In a constant-thrust trajectory,<ref>W. E. ...

...ineering|publisher=Chapman and Hall|year=1994|isbn=0412985217}}</ref> the hypothetical <math>I_\text{sp}</math> amplification attainable makes the concept speci ...down in Nuclear Thermal Rockets and Advanced Concepts |journal= Journal of Spacecraft and Rockets|volume=54 |issue=4 |pages=967–972 | date=2017|doi=10.2514/1.A33 ...

...along with [[Pluto]] and its four other moons, by the ''[[New Horizons]]'' spacecraft in July 2015.<ref Name=UniverseToday>{{cite web|title=Pluto's Moon Nix|auth ...te = 20 July 2011| url = http://www.space.com/12372-pluto-fourth-moon-nasa-spacecraft.html | access-date = 21 July 2011}}</ref> The search for rings was motivate ...

...approach of the comet, allow for impacts on Mars, its moons, and orbiting spacecraft. Dust particles ejected from the nucleus of the comet, at more than double ...t.<ref name="NS-20131206" /> Studies in 2014 showed the threat to orbiting spacecraft to be minimal.<ref name="CIOC140802" /> The greatest threat would be about ...

The complex motions of orbits can be broken down. The hypothetical motion that the body follows under the gravitational effect of one other bo ...de variety of software is available to simulate orbits and trajectories of spacecraft. ...

...the mission objectives and altitude, [[spaceflight]] using this form of [[spacecraft propulsion]] is theorized to be significantly less expensive than spaceflig ...or [[Skyhook (structure)|non-rotating tethers]], that capture an arriving spacecraft and then release it at a later time into a different orbit with a different ...

...ion Test]] (DART), a [[NASA]] space mission that deliberately collided a [[spacecraft]] with the moon on 26 September 2022 to alter its orbit around Didymos. Bef ...f>{{cite journal |last=Witze |first=Alexandra |date=2021-11-19 |title=NASA spacecraft will slam into asteroid in first planetary-defence test |lang=en |journal=[ ...

...ile the largest ones are too sparse to obtain good statistics from in situ spacecraft detectors. Discrimination between interstellar and interplanetary populatio ...hat material recovered from the seafloor could be from an extraterrestrial spacecraft. His peers are skeptical. + comment |url=https://www.nytimes.com/2023/07/24 ...

[[File:Startram.jpg|thumb|right|240px|Hypothetical StarTram spaceport. The launch tube stretches into the distance to the east ...rical power storage method, superconducting magnets are only on the moving spacecraft, inducing current into relatively inexpensive aluminum loops on the acceler ...

...ZE ions]]), as well as [[secondary radiation]] from nuclear reactions from spacecraft parts or tissue.<ref name=122-123 /> ...epresents the folding of predictions of tissue-weighted LET spectra behind spacecraft shielding with the radiation mortality rate to form a rate for trial ''J''. ...

...n 26 Years |url=https://www.universetoday.com/154028/if-launched-by-2028-a-spacecraft-could-catch-up-with-oumuamua-in-26-years/ |date=20 January 2022 |work=[[Uni ...icial name was decided, ''Rama'' was suggested, the name given to an alien spacecraft discovered under similar circumstances in the 1973 science fiction novel '' ...

...strogeology)|volatile ices]].<ref name = "Pluto updates"/> The size of the hypothetical impactor has been estimated as 150–300&nbsp;km.<ref name="LPSC2017McKinnon" ...ef name="THT-20150719"/> Some groups of hills in the basin are named after spacecraft; for example, “[[Coleta de Dados Colles|Coleta de Dados]]”, in honor of the ...

{{Short description|Hypothetical Solar System planet}} {{About|the hypothetical planet first suggested in 2014|the dwarf planet previously classified as th ...

{{Short description|Hypothetical black hole formed soon after the Big Bang}} In [[cosmology]], '''primordial black holes''' ('''PBHs''') are hypothetical [[black hole]]s that formed soon after the [[Big Bang]]. In the [[inflation ...

...the cosmic microwave background by the [[Cosmic Background Explorer|COBE]] spacecraft in 1992, and several modified CDM models came under active study through th ...of increasingly rigorous cosmological observations, including the [[Planck spacecraft]] and the Supernova Legacy Survey. First results from the SNLS reveal that ...

...}</ref> He proposed that the two objects were the remnants of a [[Phaeton (hypothetical planet)|destroyed planet]],<ref name="ARX-20060816">{{cite journal |last=So ...ef> and disproves the existence of the hypothesized inner planet [[Vulcan (hypothetical planet)|Vulcan]]. ...

...ts such as [[projectile]]s, parts of [[Machine (mechanical)|machinery]], [[spacecraft]], [[planets]], [[star]]s, and [[galaxies]]. The development of classical m ...chanics]].) Objects with non-zero size have more complicated behavior than hypothetical point particles, because of the additional [[degrees of freedom (physics an ...

...[Machine (mechanical)|machinery]], and [[astronomical objects]], such as [[spacecraft]], [[planets]], [[star]]s and [[galaxies]]. ...oratory engineering]]''' – the process of designing and analyzing detailed hypothetical models of systems that are not feasible with current technologies or method ...

...4A..13P |doi=10.1051/0004-6361/201525830 |s2cid=119262962 }} The [[Planck (spacecraft)#2015 data release|Planck Collaboration]] in 2015 published the estimate of Primordial black holes are a hypothetical type of [[black hole]] proposed in 1966,<ref>{{cite journal |last1=Zel'dovi ...