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- ...🜨</sub>''' or '''<math>R_E</math>''') is the distance from the center of [[Earth]] to a point on or near its surface. ...lattened ball (an [[oblate spheroid]]). Because it is not perfectly round, Earth's [[radius]] varies. ...3 KB (372 words) - 08:02, 20 September 2024
- ...r they estimated the mass of the mountain, they could estimate the mass of Earth. ...ree }}</ref> Their estimate for mass was about 20% less than the "correct" Earth mass as understood today. ...2 KB (373 words) - 19:42, 9 May 2024
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- ...the place of Greenwich Mean Sidereal Time. UT1 is the same everywhere on [[Earth]]. UT1 must follow this rule: ...>{{Cite book|url=https://www.worldcat.org/title/429605165|title=Time: from Earth rotation to atomic physics|last=McCarthy|first=Dennis D.|last2=Seidelmann|f ...1 KB (197 words) - 09:12, 12 January 2025
- ...es on a globe.svg|280px|thumb|The two angular variables are related to the Earth's latitude and longitude]] ...[[longitude]] and [[latitude]] on [[Geographic coordinate system|Earth]]. Earth's longitude is the same as the variable [[phi (letter)|phi]], which can be ...1 KB (161 words) - 03:02, 18 September 2019
- ...r they estimated the mass of the mountain, they could estimate the mass of Earth. ...ree }}</ref> Their estimate for mass was about 20% less than the "correct" Earth mass as understood today. ...2 KB (373 words) - 19:42, 9 May 2024
- ...🜨</sub>''' or '''<math>R_E</math>''') is the distance from the center of [[Earth]] to a point on or near its surface. ...lattened ball (an [[oblate spheroid]]). Because it is not perfectly round, Earth's [[radius]] varies. ...3 KB (372 words) - 08:02, 20 September 2024
- ...ngian Points|Earth–Moon L<sub>5</sub> Lagrangian point]] ('''L5'''), [[Low Earth orbit]] ('''LEO''')'' ...proximate required Delta-V for [[Mars]], the [[Moon]], and [[Earth science|Earth]], both ways. The red arrows show the directions in which it is possible to ...2 KB (400 words) - 02:38, 3 November 2023
- [[File:WorldMapLongLat-eq-circles-tropics-non.png|thumb|300px|Map of Earth showing some major latitudes]] The '''latitude''' of the [[Earth]] gives the distance north or south of the [[equator]].<ref>{{cite web |url ...1 KB (196 words) - 17:01, 29 November 2024
- ...strength of the earth's pull, we will get a gravity vector field for the [[Earth]]. ...1 KB (237 words) - 04:58, 8 September 2024
- ...] and a [[direction]]. The acceleration due to gravity at the surface of [[Earth]] is represented by the letter ''g''. It has a standard value defined as {{ ...ject, the greater the force of gravitational attraction pulling it towards Earth. In the [[equation]] above, this is <math>F</math>. However, the amount of ...5 KB (810 words) - 21:59, 28 January 2025
- ...with areas in a 186 to 179 ratio, so the eccentricity of the orbit of the Earth is approximately which is close to the correct value (0.016710219) (see [[Earth's orbit]]). ...3 KB (497 words) - 15:21, 1 February 2024
- | caption = Diagram of the Moon's orbit with respect to the Earth. While angles and relative sizes are to scale, distances are not. ...distance from Earth (center to center), where ''ɑ''<!-- Latin alpha --> is Earth's equatorial radius, and ''{{pi}}'' is the Moon's parallax between the ends ...4 KB (613 words) - 22:52, 5 November 2023
- ==Solar radiation at Earth== The [[wikt:solar|solar]] radiation at [[Earth]]'s distance from the Sun has an energy [[flux]] density of 1370 W/m<sup>2< ...3 KB (407 words) - 00:36, 13 April 2024
- ...ot that there is any attraction between the sun and the earth but that the earth follows the straightest path it can follow in curved space-time. ...2 KB (273 words) - 15:11, 7 January 2024
- * 1 N is the force of Earth's gravity on a mass of about 102 g. * On the Earth's surface, a mass of 1 kg pushes on its support with an average force of 9. ...2 KB (367 words) - 10:54, 14 August 2022
- [[File:WorldMapLongLat-eq-circles-tropics-non.png|thumb|440px|Map of [[Earth]] showing lines of [[latitude]] (horizontally) and [[longitude]] (verticall ...at 90° S(outh). Places with the same latitude are on a circle, around the Earth. ...2 KB (301 words) - 17:09, 5 July 2024
- ...useful coordinate system for finding and tracking objects for observers on Earth. It is based on the position of stars relative to an observer's true or ide ...on the position of stars relative to the Earth's [[equator]]. Imagine the Earth's equator extended out to an infinite distance. The equatorial describes th ...5 KB (755 words) - 16:31, 6 September 2024
- ...stellar stream''' is a close [[stellar stream]] 80-226 parsecs away from [[Earth]]. It is estimated to be only 120 million years old, similar age to the [[P ...478 bytes (67 words) - 01:37, 20 March 2025
- ...is equal to the mass of the [[Sun]], about 332,950 times the mass of the [[Earth]], or 1,048 times the mass of Jupiter. Masses of other [[star]]s and groups ...450 bytes (70 words) - 07:13, 5 July 2023
- ...ght|300px|Two clocks will show different times in [[outer space]] and on [[Earth]].]] ...n a spaceship far away from any planet would move faster than a clock near Earth. ...7 KB (1,031 words) - 09:16, 1 February 2025
- ...[[gravity]] acts between objects with [[mass]], like the [[sun]] and the [[earth]]. Another example is [[electromagnetism|electromagnetic force]], which act ...is an acceleration. Everything that has a mass is being pulled toward the Earth because of that acceleration. This pull is a force called weight. ...6 KB (896 words) - 20:03, 21 May 2024
- ...ere. A real-world sphere is called a ''globe'' if it is large (such as the Earth), and as a ''ball'' if it is small, like an [[association football]]. The [[Earth]] and the [[Sun]] are nearly ''spherical'', meaning sphere-shaped. ...3 KB (419 words) - 21:22, 24 January 2025