Science
What are orbits and eclipses? What is an orbit? (NASA) (https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-orbit-58.html) What causes an orbit to happen? (Qualitative Reasoning Group) (http://www.qrg.northwestern.edu/projects/vss/docs/space-environment/1-what-causes-an-orbit.html) What is orbital mechanics? (Rocket & Space Technology) (http://www.braeunig.us/space/orbmech.htm) Orbital mechanics I (The Physics Hypertextbook) (https://physics.info/orbital-mechanics-1/) Heliocentrism from the Greeks to Copernicus & after (Wikipedia) (https://en.wikipedia.org/wiki/Nicolaus_Copernicus#Copernican_system) Copernicus (Biography) (https://www.biography.com/people/nicolaus-copernicus-9256984) Galileo & the controversy that moons orbited Jupiter (Wikipedia) (https://en.wikipedia.org/wiki/Galileo_Galilei#Jupiter.27s_moons) Modern flat Earth societies (Wikipedia) (https://en.wikipedia.org/wiki/Modern_flat_Earth_societies) The middle ages (History) (http://www.history.com/topics/middle-ages) What is the heliocentric model of the universe? (Universe Today) (https://www.universetoday.com/33113/heliocentric-model/) From geocentrism to heliocentrism (Futurism) (https://futurism.com/from-geocentrism-to-heliocentrism/) Live tracking: Where is Halley's comet now? (The Sky Live) (http://theskylive.com/3dsolarsystem?obj=halley) Comet trajectories: Where is Halley's comet (The Planets Today) (http://www.theplanetstoday.com/comet_trajectories.html#) Halley's comet completes an elliptical orbit around the sun every ~76 years (Wikipedia) (https://en.wikipedia.org/wiki/Halley%27s_Comet#Orbit_and_origin) Planets & stars orbit around their common centre of mass, the 'barycentre' (NASA) (https://spaceplace.nasa.gov/barycenter/en/) Lagrange points: Parking places in space (Space) (https://www.space.com/30302-lagrange-points.html) Kepler's laws (One-Minute Astronomer) (http://oneminuteastronomer.com/8626/keplers-laws/) Planetary motion: The history of an idea that launched the scientific revolution (NASA) (https://earthobservatory.nasa.gov/Features/OrbitsHistory/) Does our galaxy orbit anything? (Astroquizzical) (https://astroquizzical.com/astroquizzical/the-moon-orbits-the-earth-the-earth-orbits-the) How do gravitational slingshots work? (Universe Today) (https://www.universetoday.com/113488/how-do-gravitational-slingshots-work/) Gravitational slingshot (Math Pages) (http://www.mathpages.com/home/kmath114/kmath114.htm) Voyager 1 & 2 spacecraft flight paths (Vimeo) (https://vimeo.com/69465942) Voyager 1 slingshot & other probes (Wikipedia) (https://en.wikipedia.org/wiki/Gravity_assist#Voyager_1_.E2.80.93_farthest_human-made_object) Do unmanned spacecraft like Voyager travel in straight lines? (Ask An Astronomer) (http://curious.astro.cornell.edu/about-us/156-people-in-astronomy/space-exploration-and-astronauts/satellites-robotic-space-craft/968-do-unmanned-spacecraft-like-voyager-travel-in-straight-lines-intermediate) What is a gravity well? (Qualitative Reasoning Group) (http://www.qrg.northwestern.edu/projects/vss/docs/space-environment/3-whats-a-gravity-well.html) Gravity wells scaled to Earth surface gravity (xkcd) (https://xkcd.com/681_large/) Voyagers 1 & 2 do have thrusters (NASA) (https://www.nasa.gov/mission_pages/voyager/voyager20111114.html) The Farthest: The documentary about the Voyagers we mentioned (IMDb) (http://www.imdb.com/title/tt6223974/) Energy relationships for satellites (The Physics Classroom) (http://www.physicsclassroom.com/class/circles/Lesson-4/Energy-Relationships-for-Satellites) Why doesn't the Moon fall upon Earth? (Physics Stack Exchange) (https://physics.stackexchange.com/questions/9049/why-doesnt-the-moon-fall-upon-earth) Why the Moon is getting further away from Earth (BBC) (http://www.bbc.com/news/science-environment-12311119) Is the Moon moving away from Earth? (Ask An Astronomer) (http://curious.astro.cornell.edu/about-us/37-our-solar-system/the-moon/the-moon-and-the-earth/111-is-the-moon-moving-away-from-the-earth-when-was-this-discovered-intermediate) Outer space is not a perfect vaccuum (Wikipedia) (https://en.wikipedia.org/wiki/Vacuum#Outer_space) How are satellites launched into orbit? (Astronomy WA) (http://www.astronomywa.net.au/how-are-satellites-launched-into-orbit.html) The different types of orbits of satellites (Wikipedia) (https://en.wikipedia.org/wiki/Satellite#Orbit_types) One of many satellite finder apps (iTunes) (https://itunes.apple.com/us/app/satfinder-3d-augmented-reality/id1054455714?mt=8) Does zero gravity exist in space? (Yale Scientific) (http://www.yalescientific.org/2010/10/mythbusters-does-zero-gravity-exist-in-space/) NASA's vomit comet trains astronauts in the ways of weightlessness (Gizmodo) (https://www.gizmodo.com.au/2014/04/nasas-vomit-comet-trains-astronauts-in-the-ways-of-weightlessness/) Feeling weightless in an elevator if the cable breaks (Hyperphysics) (http://hyperphysics.phy-astr.gsu.edu/hbase/elev.html) What is the difference between weight & mass? (Thought Co.) (https://www.thoughtco.com/mass-and-weight-differences-606116) What is an eclipse? (NASA) (https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-an-eclipse-58) Eclipse (Wikipedia) (https://en.wikipedia.org/wiki/Eclipse) Solar eclipse of August 21, 2017 (Wikipedia) (https://en.wikipedia.org/wiki/Solar_eclipse_of_August_21,_2017) What science can learn from a total solar eclipse (Cosmos) (https://cosmosmagazine.com/space/what-science-can-learn-from-a-total-solar-eclipse) Here's what scientists have learned from total solar eclipses (Space) (https://www.space.com/36785-solar-eclipse-science-throughout-history.html) How are total solar eclipses used by scientists? (NASA) (https://eclipse2017.nasa.gov/how-are-total-solar-eclipses-used-scientists) Why a total solar eclipse is such a big deal (YouTube) (https://www.youtube.com/watch?v=oNH3akWXaV8&feature=share) Two minutes of darkness with 20,000 strangers (FiveThirtyEight) (https://fivethirtyeight.com/features/eclipse-towns-planning/) 2 July, 2019 is the next total solar eclipse (Time And Date) (https://www.timeanddate.com/eclipse/solar/2019-july-2) The Moon's orbit & rotation (Windows 2 Universe) (https://www.windows2universe.org/the_universe/uts/moon1.html) Diagram showing the Earth-Moon system (Wikipedia) (https://en.wikipedia.org/wiki/Orbit_of_the_Moon#/media/File:Earth-Moon.PNG) Why future Earthlings won't see total eclipses (NPR) (http://www.npr.org/sections/thetwo-way/2017/08/14/542700588/why-future-earthlings-wont-see-total-solar-eclipses) Perihelion & aphelion (Wikipedia) (https://en.wikipedia.org/wiki/Perihelion_and_aphelion) Types of solar eclipse: Partial, annular, total & hybrid (National University of Singapore) (http://www.math.nus.edu.sg/aslaksen/gem-projects/hm/0304-1-08-eclipse/Types%20of%20Solar%20Eclipse.htm) The diamond ring effect during a toal solar eclipse (Wikipedia) (https://en.wikipedia.org/wiki/Baily%27s_beads) Solar eclipse of January 24, 1925 in New York City (Wikipedia) (https://en.wikipedia.org/wiki/Solar_eclipse_of_January_24,_1925) What is the umbra? (Time And Date) (https://www.timeanddate.com/eclipse/umbra-shadow.html) Scientists to take flight for longer views of the eclipse (The New York Times) (https://www.nytimes.com/2017/08/14/science/eclipse-planes-flights-ionosphere.html?mcubz=1) Chasing the total solar eclipse from NASA’s WB-57F jets (NASA) (https://www.nasa.gov/feature/goddard/2017/chasing-the-total-solar-eclipse-from-nasa-s-wb-57f-jets) When astronomers chased a total eclipse in a Concorde (Motherboard) (https://motherboard.vice.com/en_us/article/8q8qwk/the-concorde-and-the-longest-solar-eclipse) NASA's best photos of the total solar eclipse of 2017 (Space) (https://www.space.com/37874-best-solar-eclipse-2017-photos-by-nasa.html) The Sun's diameter is ~1.392 million km (Space) (https://www.space.com/17001-how-big-is-the-sun-size-of-the-sun.html) The Sun's corona extends millions of kilometres into space (Wikipedia) (https://en.wikipedia.org/wiki/Corona) How do computers predict eclipses? (NASA) (https://eclipse2017.nasa.gov/how-do-computers-predict-eclipses) What do Flat-Earthers think is going on during a solar eclipse? (IFL Science) (http://www.iflscience.com/space/what-do-flat-earthers-think-is-going-on-during-a-solar-eclipse/) Where are you from? Send us a postcard! Strange Attractor, c/ PO Box 9, Fitzroy, VIC 3065, Australia Corrections Gravity assist owes both Kepler & Newton (The Science Classroom) (https://thescienceclassroom.wikispaces.com/Gravitational+Assist) Check out our new Fireside home Find aaaaall the great episodes, show notes, Patreon link & handy instructions should you feel like leaving us a cheeky iTunes review ? (http://strangeattractor.random.productions) Image credit: NASA