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...ylen|V. Van Eylen]], and was announced in 2018.<ref>{{Cite web|url=https://exoplanets.nasa.gov/newworldsatlas/6306/hd-89345-b/|title=HD 89345 b {{!}} New World A ...https://web.archive.org/web/20180703220344/https://upcosmos.com/exoplanets-sub-jupiter-type/|url-status=dead}}</ref> ...

...|10.8|1.3|p=≥|ul=Earth mass}},<ref name="Vogt2015"/> {{val|15.3|1.6|p=≥|ul=Earth mass}}<ref name="Hirsch2020"/> | url=http://phl.upr.edu/projects/habitable-exoplanets-catalog/calculators ...

...radius|link=y}}, ≲0.3 {{Earth radius}};<ref name=Rappaport2014/> ≤0.871 {{Earth radius}}<ref name=Garai2018/> | mass = <0.86 {{Earth mass|link=y}}, ≲0.03 {{Earth mass}}<ref name=Rappaport2014/> ...

...d thermal escape. The [[root mean square]] thermal velocity ({{math|''v''{{sub|th}}}}) of an atomic species is <math>v_\mathrm{th} = \sqrt{\frac{3kT}{m}}< ...ing energy is balanced by escape to space. Recent numerical simulations on exoplanets have suggested that this calculation overestimates the hydrodynamic flux by ...

...he Moon's average barycentric orbital speed is 1.010&nbsp;km/s, whilst the Earth's is 0.012&nbsp;km/s. The total of these speeds gives a geocentric lunar av {{block indent|{{mvar|M}}{{sub|star}} is the mass of the star in [[solar mass]]es}} ...

...uses them to settle toward the central plane of the disk and to orbit at a sub-keplerian velocity resulting in radial drift toward the central [[star]].<r ...ts_Johansen_2012" /> Pebble accretion can result in doubling of mass of an Earth-massed core in as little as 5500 years,<ref name="Morbidelli_Nesvorny_2012" ...

...using the hyphenated names of the primary and major satellite (e.g. the "[[Earth-Moon system]]"). ...although some have been orbited by artificial satellites originating from Earth. ...

{{Short description|Exoplanets confirmed or discovered from direct imaging}} [[File:HR 8799 Orbiting Exoplanets.gif|thumb|right|Motion interpolation of seven images of the [[HR 8799]] sys ...

|Relatively young at 7200 (or 970 relative to Earth) years old as of May 2024. ...|last4=Wei|first4=Y. C.|last5=Li|first5=X. D.|date=October 2007|title=Does Sub-millisecond Pulsar XTE J1739-285 Contain a Low Magnetic Neutron Star or Qua ...

[[File:Earth vs Mars gravity at elevation.webp|thumb|300px|[[Gravity of Earth|Earth]] vs [[Mars]] vs [[Gravitation of the Moon|Moon]] [[gravity]] at [[elevatio ...leration]] on Mars is 3.728 m/s² (about 38% of the [[gravity of Earth]]) and it varies.<ref name=":1">{{Cite journal|last1=Hirt|first1=C.|last2=C ...

...hat TRAPPIST-1 has a surface gravity approximately 177 times stronger than Earth's.}}{{sfn|Agol|Dorn|Grimm|Turbet|2021|p=1}} ...(constellation)|Aquarius]] about {{val|40.66}} [[light-year]]s away from [[Earth]], and has a surface temperature of about {{cvt|2566|K|C F|lk=on|round=10}} ...

...le. Then there is the fact that these objects might be [[brown dwarf]]s, [[sub-brown dwarf]]s, or not exist at all. Because of this, this list only cites ...n {{Jupiter radius|1.6}} ({{#expr: (71492 * 1.6) / 6378 round 2}}{{Nbsp}}{{Earth radius|link=y}} or {{val|{{#expr: 71492 * 1.6 round 3}}}} ''{{val|u=km}}'') ...

| mass = {{val|4.4|1.1|ul=Earth mass}}<ref name=Siraj2025>{{Cite journal |last1=Siraj |first1=Amir |last2=C ...orbit the Sun at distances averaging more than 250&nbsp;times that of the Earth i.e. over 250&nbsp;[[astronomical unit]]s (AU). These ETNOs tend to make th ...

...es an angle ''μ'' swept out in unit time at tangential velocity ''v_t''.)]] ...n further out. One of the fastest known stars in our Galaxy is the O-class sub-dwarf [[US 708]], which is moving away from the Milky Way with a total velo ...

...thumb|320x320px|[[Proxima Centauri]] is the closest [[M-type star]] to the Earth.|center]] ...Using Hubble Space Telescope Fine Guidance Sensor 3: Detection Limits for sub-Stellar Companions |journal=The Astronomical Journal |volume=118 |issue=2 | ...

...ing terms''' pertains specifically to '''[[aerospace engineering]]''', its sub-disciplines, and related fields including [[aviation]] and [[aeronautics]]. ...a [[height#In aviation|height]] measured with respect to the underlying [[earth's surface|ground surface]]. This is as opposed to altitude/elevation [[abov ...