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...thor1=Stahler, Steven |author2=Palla, Francesco | title = The Formation of Stars | publisher = [[Wiley-VCH]] | isbn = 3-527-40559-3 | year = 2004 | url = ht ...line and continuum). Then <math>W_\lambda</math> represents the width of a hypothetical line which drops to an intensity of zero and has the "same integrated flux ...

...articular star|the type of variable stars named after this star|FU Orionis stars}} ...-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars] {{Webarchive|url=https://web.archive.org/web/20170620004609/http://www.sai ...

...-Enceladus galaxy. Yellow arrows represent the positions and velocities of stars originating from the dwarf galaxy, the data taken from a simulated merger w | stars = ...

...es>Earth Tides; D.C.Agnew, University of California; 2007; 174</ref> For a hypothetical solid Earth <math>h = 0</math>. For a liquid Earth, one would expect <math> ...lessandro |date=2009-10-23 |title=Relativistic tidal properties of neutron stars |url=https://link.aps.org/doi/10.1103/PhysRevD.80.084035 |journal=Physical ...

...omy & Astrophysics |chapter=Tycho Star Catalogs: The 2.5 Million Brightest Stars |date=2001 |publisher=CRC Press |isbn=978-1-003-22043-5 |editor-last=Murdin ...oi-access=free}}</ref> A good approximation can be obtained by considering stars as [[black body|black bodies]], using Ballesteros' formula<ref name=Ballest ...

A '''toroidal planet''' is a hypothetical type of [[terrestrial planet|telluric exoplanet]] with a [[Torus|toroidal]] ...nal |last1=Nambo, E. C., Sarbach, O. |title=Static spherical perfect fluid stars with finite radius in general relativity: a review |journal=Revista Mexican ...

...journal |bibcode=2017ARep...61...80S |title=General catalogue of variable stars: Version GCVS 5.1 |last1=Samus' |first1=N. N. |last2=Kazarovets |first2=E. ...t planet]] about four times as massive as [[Jupiter]] orbiting the pair of stars with a period of 11.9 years, and that there was also evidence for a second ...

...|title=Archival VLT/Na ''Co'' multiplicity investigation of exoplanet host stars |year=2018 |last1=Dietrich |first1=J. |last2=Ginski |first2=C. |journal=Ast ...nets orbiting HD 40307 suggested that the [[metallicity|metallicities]] of stars determine whether or not the planetary bodies that orbit them will be terre ...

...ability of natural satellites|habitability]] is instead considered for its hypothetical exomoons.<ref>{{Cite web |last=Cowing |first=Keith |date=2024-09-20 |title= ...>{{cite journal | title=Extrasolar planets and brown dwarfs around AF-type stars. IX. The HARPS southern sample | url=https://www.aanda.org/articles/aa/full ...

{{Short description|Hypothetical object}} '''Antimatter comets''' and '''antimatter meteoroids''' are hypothetical [[comet]]s and [[meteoroid]]s composed solely of [[antimatter]] instead of ...

'''Space travel under constant acceleration''' is a hypothetical method of [[Spaceflight|space travel]] that involves the use of a [[propuls ...environment as the ship passes through it (the sailing ship approach). One hypothetical sailing ship approach is discovering something equivalent to the [[parallel ...

{{Short description|Hypothetical spacecraft propulsion concept using external force fields momentum for tran ...tational field|gravitational]] and [[Magnetic field|magnetic fields]] from stars and planets. Proposed drives that use field propulsion are often called a [ ...

...net]] inside the orbit of Mercury, as well as having given its name to the hypothetical [[vulcanoid]]s.<ref name="Marcia Dunn" /><ref>{{cite web |publisher=[[SPACE {{Portal bar|Astronomy|Stars|Spaceflight|Outer space|Solar System}} ...

| names = {{nowrap|WISEA J085510.74-071442.5}}, [[Gliese Catalogue of Nearby Stars|GJ]] 11286<ref name="CNS5"/> ...tion]] [[Hydra (constellation)|Hydra]]. It is the fourth-[[List of nearest stars and brown dwarfs|closest star or (sub-) brown dwarf system to the Sun]] and ...

...b-brown dwarf]]s, planet-mass objects that formed in interstellar space as stars do. ...he Oort Cloud could have been formed from ejected planetesimals from other stars in the Sun's birth cluster.<ref>{{Cite journal|last1=Siraj|first1=Amir|last ...

...osed.<ref name=nyt>{{Cite news|title=How Old Is This Ancient Vision of the Stars?|url=https://www.nytimes.com/2020/09/13/science/nebra-sky-disk.html|last=Fe ...ved the sky was a solid dome with the [[Sun]], [[Moon]], [[planets]] and [[stars]] embedded in it.<ref>{{cite journal |journal=Westminster Theological Journ ...

...f new stars too young to originate local life (425 infrared-emitting young stars aged 100,000 to a million years). Such clouds contain zones with various de Habitable astronomical objects or habitable zones about nearby stars may be targeted by large (10&nbsp;kg) missions where microbial capsules ar ...

{{Short description|Hypothetical black hole formed soon after the Big Bang}} ...y. Because the creation of primordial black holes would pre-date the first stars, they are not limited to the narrow mass range of [[stellar black hole]]s. ...

...d to detect an orbiting object. These observations further constrained the hypothetical object to be 5–20 times the mass of Jupiter, orbiting between 10 and 20 AU ...ESO CES and HARPS. IV. The search for Jupiter analogues around solar-like stars <!--Reducible--> | last1=Zechmeister | first1=M. | last2=Kürster | first2=M ...

...an the combined [[Power (physics)|power]] of all light radiated by all the stars in the [[observable universe]].<ref name="PRL-20160211"/><ref name="Nature_ ...ck hole]]s. Over a span of millions of years, [[binary star|binary neutron stars]], and [[binary black hole]]s lose energy, largely through gravitational wa ...