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Posts tagged orbital-mechanics

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357 posts
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Inverse orbital direction

2 answers  ·  last activity 2 months ago by HDE 226868

planets orbital-mechanics
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What is the highest theoretical escape velocity a 2 billion metric ton vehicle can achieve using a >20$^{\circ}$ gravitational slingshot?

1 answer  ·  last activity 2 months ago by HDE 226868

orbital-mechanics
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How to Calculate Apparent Magnitude/Brightness of Planets from Within the same Solar System

0 answers  ·  last activity 2 months ago by A.E. Stephenson

astronomy planets orbital-mechanics optics
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Earth-sized Moon with Host Planet launched from Star System

4 answers  ·  last activity 3 months ago by user76027

biology planets moons orbital-mechanics rogue-planets xenobiology
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Is it possible for a moon to stay on the same side of its planet relative to the sun?

3 answers  ·  last activity 3 months ago by LonelyCryptid

earth-like reality-check moons orbital-mechanics earth gas-giants gas
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I want ten Earth-years long day on my planet. Can I have it?

6 answers  ·  last activity 3 months ago by Zjerzy

climate planets day-night orbital-mechanics
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Binary Star System Build - Alpha Centauri

1 answer  ·  last activity 4 months ago by user72655

space planets science-based orbital-mechanics solar-system
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Minimal mass of an Earth-like satellite to seriously deter space travel?

1 answer  ·  last activity 4 months ago by Udon Nomaneim

space travel orbital-mechanics space-travel satellites city escape velocity
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Could co-orbital planets also be double planets?

2 answers  ·  last activity 4 months ago by Axion

space science-based physics orbital-mechanics astrophysics
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How close an orbit could you get to Earth with a planet-sized object/ship without severely disrupting Earth's orbit?

3 answers  ·  last activity 4 months ago by DWKraus

space travel spaceships orbital-mechanics space-travel ships
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Making the exoplanet with the most complicated seasons

2 answers  ·  last activity 4 months ago by aphid

planets science-based orbital-mechanics
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If Earth had a sideways axial tilt (like Uranus), would Earth still have tornadoes?

1 answer  ·  last activity 5 months ago by user6760

weather orbital-mechanics earth axial-tilt
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What kind of lunar orbit would cause a total solar eclipse to happen once a day?

7 answers  ·  last activity 5 months ago by Double_S

orbital-mechanics solar-system
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Are Orbital Rings feasible to construct in another star system?

2 answers  ·  last activity 6 months ago by user72655

science-based orbital-mechanics megastructures gas science-fiction dyson-ring
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How long to become a habitable planet

0 answers  ·  last activity 6 months ago by user72655

physics orbital-mechanics solar-system habitability astrophysics
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Binary planets that are not tidally locked

1 answer  ·  last activity 6 months ago by user72655

planets orbital-mechanics solar-system rogue-planets tidally-locked
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What are the odds that an alien spaceship entering a low Earth orbit would collide with an orbiting body?

4 answers  ·  last activity 6 months ago by WhittlesJr

space travel orbital-mechanics space-travel satellites
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Gravity/Ecosystem on a peanut-shaped planet?

2 answers  ·  last activity 6 months ago by DiagonalCorgi

environment planets science-based gravity orbital-mechanics
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What would be the impact on Titan, Saturn and the Solar system if aliens harvested as much hydrocarbons as possible from Saturn's moon?

2 answers  ·  last activity 6 months ago by toncha

science-based orbital-mechanics solar-system science-fiction
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Would it be more efficient to build fleets in orbit?

9 answers  ·  last activity 6 months ago by user6760

space travel spaceships technology orbital-mechanics space-travel shipbuilding ships
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Can a moon orbit a planet's southern pole?

10 answers  ·  last activity 6 months ago by mrkv12

moons orbital-mechanics
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How Would These Planets Affect Earth's Eccentricity?

1 answer  ·  last activity 6 months ago by JohnWDailey

planets science-based orbital-mechanics solar-system earth alternate-earth
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Habitable Planet with Highly Eliptical Orbit

12 answers  ·  last activity 6 months ago by WillRoss1

evolution orbital-mechanics seasons sea species life
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The Nightfall / Kalgash System

1 answer  ·  last activity 7 months ago by Trish

science-based orbital-mechanics solar-system
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After surviving a black hole/wormhole, what are the chances of Earth start orbiting in a new solar system?

4 answers  ·  last activity 7 months ago by Dawidek

planets orbital-mechanics solar-system black-holes earth rogue-planets
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What if Jupiter and Mars swapped orbits?

2 answers  ·  last activity 7 months ago by mico villena

planets orbital-mechanics solar-system
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Would tidal acceleration mean doom for this system?

3 answers  ·  last activity 7 months ago by Axion

space moons orbital-mechanics tides
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What size asteroid is needed to move the Sun?

9 answers  ·  last activity 7 months ago by Gerwin

science-based stars orbital-mechanics
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Could some natural process on a moon do enough stationkeeping to sustain an impossible orbit?

4 answers  ·  last activity 7 months ago by SRM

science-based moons orbital-mechanics
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What did the night sky look like 63 million years ago?

3 answers  ·  last activity 7 months ago by fluffy

astronomy orbital-mechanics natural-disasters alternate-history history
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A supermassive black hole is coming our way. When's the latest that we would notice?

3 answers  ·  last activity 7 months ago by bantu

astronomy orbital-mechanics black-holes modern-age
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What kind of event, if any, would knock the moon off its orbit, without destroying it?

9 answers  ·  last activity 7 months ago by guido

space moons orbital-mechanics apocalypse
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Habitable Planet in the L2 Lagrange Point of a Hot Jupiter

1 answer  ·  last activity 7 months ago by WillRoss1

planets orbital-mechanics
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Space elevator off Europa without running into a nearby moon?

2 answers  ·  last activity 7 months ago by levininja

space orbital-mechanics space-constructs
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Is it safe to orbit HDE 226868?

5 answers  ·  last activity 8 months ago by HDE 226868

astronomy science-based stars orbital-mechanics black-holes
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The major effects on the habitability of exomoons orbiting this Brown Dwarf

2 answers  ·  last activity 8 months ago by Axion

planets moons orbital-mechanics solar-system habitability
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General effects (and narrative practicality) of a moon with an extreme elliptic orbit

1 answer  ·  last activity 8 months ago by Tommy

moons orbital-mechanics science-fiction
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Ideal sun type and corresponding effects for a terrestrial planet with 256 days in a year?

1 answer  ·  last activity 8 months ago by P. M. B.

environment earth-like astronomy orbital-mechanics earth
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Can two moons have intersecting orbits yet be guaranteed not to collide?

5 answers  ·  last activity 8 months ago by Frank Harris

physics orbital-mechanics magic
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Is this planet-moon system possible?

4 answers  ·  last activity 8 months ago by Hunt Castle

planets moons orbital-mechanics
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What would the effects be on a planet whose moon orbits at a speed just faster than a geosynchronous orbit, so there are more months than days?

1 answer  ·  last activity 8 months ago by StrandsW

moons orbital-mechanics tides eclipses geostationary-orbit
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Duplicate Earth and Moon, where should I put it?

3 answers  ·  last activity 8 months ago by Jazzylee

orbital-mechanics earth counter-earth
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Are elliptical rings feasible?

1 answer  ·  last activity 8 months ago by Greenie E. - Reinstate Monica

reality-check science-based orbital-mechanics planetary-rings
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Navigation on a planet with an eccentric orbit

2 answers  ·  last activity 8 months ago by John Lewis

planets orbital-mechanics navigation stoneage
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Feasibility of extra-lunar capture

2 answers  ·  last activity 9 months ago by Darius Arcturus

orbital-mechanics satellites
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If the Moon Titan Orbits Earth

1 answer  ·  last activity 9 months ago by JohnWDailey

moons day-night orbital-mechanics
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How can an Earth-like moon meet these angular diameter conditions?

4 answers  ·  last activity 9 months ago by overlord - Reinstate Monica

planets moons orbital-mechanics solar-system
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Binary World Mechanics

2 answers  ·  last activity 9 months ago by Darius Arcturus

astronomy planets orbital-mechanics
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Can an Unstable Ternary Star System Last Several Hundred Years?

2 answers  ·  last activity 9 months ago by overlord - Reinstate Monica

reality-check stars orbital-mechanics
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What star can give an earth-like planet a 1-day year?

5 answers  ·  last activity 9 months ago by Vogon Poet

reality-check stars orbital-mechanics solar-system
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