What is Apollo: Definition and 47 Discussions

Apollo is one of the Olympian deities in classical Greek and Roman religion and Greek and Roman mythology. The national divinity of the Greeks, Apollo has been recognized as a god of archery, music and dance, truth and prophecy, healing and diseases, the Sun and light, poetry, and more. One of the most important and complex of the Greek gods, he is the son of Zeus and Leto, and the twin brother of Artemis, goddess of the hunt. Seen as the most beautiful god and the ideal of the kouros (ephebe, or a beardless, athletic youth), Apollo is considered to be the most Greek of all the gods. Apollo is known in Greek-influenced Etruscan mythology as Apulu.As the patron deity of Delphi (Apollo Pythios), Apollo is an oracular god—the prophetic deity of the Delphic Oracle. Apollo is the god who affords help and wards off evil; various epithets call him the "averter of evil". Delphic Apollo is the patron of seafarers, foreigners and the protector of fugitives and refugees.
Medicine and healing are associated with Apollo, whether through the god himself or mediated through his son Asclepius. Apollo delivered people from epidemics, yet he is also a god who could bring ill-health and deadly plague with his arrows. The invention of archery itself is credited to Apollo and his sister Artemis. Apollo is usually described as carrying a golden bow and a quiver of silver arrows. Apollo's capacity to make youths grow is one of the best attested facets of his panhellenic cult persona. As the protector of young (kourotrophos), Apollo is concerned with the health and education of children. He presided over their passage into adulthood. Long hair, which was the prerogative of boys, was cut at the coming of age (ephebeia) and dedicated to Apollo.
Apollo is an important pastoral deity, and was the patron of herdsmen and shepherds. Protection of herds, flocks and crops from diseases, pests and predators were his primary duties. On the other hand, Apollo also encouraged founding new towns and establishment of civil constitution. He is associated with dominion over colonists. He was the giver of laws, and his oracles were consulted before setting laws in a city.
As the god of mousike Apollo presides over all music, songs, dance and poetry. He is the inventor of string-music, and the frequent companion of the Muses, functioning as their chorus leader in celebrations. The lyre is a common attribute of Apollo. In Hellenistic times, especially during the 5th century BCE, as Apollo Helios he became identified among Greeks with Helios, the personification of the sun. In Latin texts, however, there was no conflation of Apollo with Sol among the classical Latin poets until 1st century CE. Apollo and Helios/Sol remained separate beings in literary and mythological texts until the 5th century CE.

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  1. PeterDonis

    I Does Special and General Relativity Affect Aging of Apollo Astronauts?

    I recently read Michael Collins' excellent book Carrying the Fire in which, among other things, he describes the Apollo 11 mission to the Moon and back. After the astronauts returned and were quarantined inside an isolation facility, they spoke to President Nixon, and Collins remarks in...
  2. Astronuc

    Margaret Hamilton, Lead Programmer, Apollo Program's Guidance Computer

    Margaret Hamilton the Pioneering Software Engineer Who Saved the Moon Landing https://interestingengineering.com/margaret-hamilton-software-engineer-who-saved-the-moon-landing Margaret Hamilton began working with Edward Lorenz, the father of Chaos Theory, in MIT's meteorology department. As...
  3. D

    I Simulation debugging for Apollo Lunar Landing

    My simulator is trying to mimick the actual conditions of the Apollo landing. I have entered in numbers for my runge kutta simulator for LEM mass, dry mass, fuel, thrust of the rockets, fuel burn rate per second etc etc. But I am not able to land, only very close to landing. I copied the...
  4. Janus

    What were the early design concepts for the Apollo program?

    In the TIL thread, I posted a link which had a number of imaged of an early proposal for the Apollo program. I thought I'd use them to do a few renders of what it might have looked like, and point out some of the major differences from the final version. First, what the craft in fully...
  5. S

    NASA What did Apollo CM use helium for?

    Hello All Diagrams of the Apollo Command Module show tanks of helium, What was this used for? best regards ... Stef
  6. B

    B Looking for an example.... (misalignment of the Apollo 11 rocket)

    I once read that if the Apollo 11 rocket had been misaligned by even half a degree on the launch pad that the lunar landing would not have happened. I would like to find this information again to use it as an example for my students in their life planning, i.e. if they make small mistakes now...
  7. DennisN

    Apollo 13: What did the crew see when they looked out the window?

    Nice photos here: Apollo 13: Enhanced images reveal life on stricken spacecraft (BBC, 13 april 2020) http://www.bbc.com/news/science-environment-52264743 Amazing to see these photos, particularly since it became such a dangerous mission due to the accident, or maybe I should say "problem"...
  8. M

    What happens if I speed up an Apollo group asteroid?

    Okay, having devised the antimatter bomb, I'm moving along to the concept of using Apollo group asteroids as freight trains for the inner solar system, but my knowledge of orbital mechanics is zilch. For example, (343158) 2009 HC82 appears to have a max speed of about 56 km/s at perihelion...
  9. diogenesNY

    Stargazing CApollo 11 50th Anniversary: CSPAN3 Coverage Today

    Today on Cspan3 https://www.c-span.org/ They are broadcasting what is essentially a 50 year delay coverage of the Apollo 11 mission. I watched the launch, and it was _amazing_. This seems to be mostly the straight CBS coverage with Walter Cronkite and an amazing stream of guests from Wally...
  10. PeroK

    What was the impact of Apollo 11 on the future of mankind?

    For anyone with access to the BBC iPlayer, in the "Archive" section there is a Panorama special from 1969 discussing the impact of the first Moon landing on the future of mankind. Fascinating. Definitely worth a watch.
  11. C

    Apollo Guidance Computer boots up

    Someone just booted up an Apollo Guidance Computer. Can't quite play space invaders on it but I though it was interesting..
  12. Physics345

    B Why does the flag on the moon appear to be waving during the Apollo 13 mission?

    Hi Everyone, Can someone please explain to me why the flag is moving as if wind is blowing on it during the Apollo 13 mission? I am well aware that it's not actually wind blowing on the the flag causing it to move, but I still would love to know why this occurs. Note: I am very uneducated...
  13. T

    Help with an Apollo space program flight simulation guide

    Hi all, This is my first time posting on this forum. I'm not sure if this is the right place to ask this question so apologies in advance. Perhaps someone could recommend a more appropriate forum for me to post this on. I'm working on creating documentation for a simulation. It's an Apollo...
  14. mr1batman

    About apollo 11 and apollo 17 are they real ?

    the apolo missions what do you guys think about them are they real or not and why ?
  15. enorbet

    From the Moon to the Scrap Heap and Back

    Greetings all In the mid 1960s Raytheon developed the first microcomputer chip ICs and Rope Memory that would get us to the moon. Apparently within a mere 10 years these historic small steps that were more than a decade ahead of their time and of considerable historic value were auctioned off...
  16. sevenperforce

    Suborbital docking - Apollo Landings

    Suppose that one of the Apollo landings had developed a fuel leak in the lunar ascent module, such that even with a lightened load, the ascent module only had enough delta-v to reach about half of lunar orbital velocity. One possible rescue solution would be to lower the command module's orbit...
  17. C

    B Looking to understand Apollo 15 and density

    Okay, so this is the website: <Moderator's note: link deleted as it is not a valid reference> I found this page as I was looking for a way to compare the assumed gravitational constant of the moon and the acceleration of the hammer/feather from the Apollo 15 experiment video. I have only taken...
  18. D

    Were the Apollo Missions a waste of money?

    Critics of human space flight (which I usually identify as) generally feel that manned missions are a huge waste of money. The case is made that the amount of science you get per dollar spent on manned missions does not make them worthwhile, and that money should be spent on better science...
  19. mrspeedybob

    Why did the Apollo spacecraft go into Earth orbit first?

    I've been playing Kerbal Space Program. I have found the simplest way to get to an outer planet is to launch straight up at dawn and the simplest way to get to an inner planet is to launch straight up at dusk, and in neither case to mess about with going into Kerbal orbit. This got me to...
  20. A

    Travel time for apollo to the moon with Kepler's thirs law

    Hi everyone, For one of my project in school, i need to calculate the travel time to the moon. To do that, I thought to use Kepler's third law which is : (2(pi) / P )2 * a3 = GM where : P : period of travel a : major semiaxes (not sure in english, but it is the half the longest radius of the...
  21. T

    Equations for Apollo Spacecraft Orbital Velocity & Moon Escape Velocity

    Look for help on these equations. Any help will be greatly appreciated. Thanks so much! :) The Apollo spacecraft must be traveling at what velocity in order to remain in a 110 kilometer orbit around the moon? The magnitude of the Apollo’s orbital velocity can be computed from the laws of...
  22. R

    Apollo Spacecraft Re-entry Program

    I'm working on an Apollo re-entry program and would like to somehow check my results I got for re-entry. I'm using 3 DOF equations to calculate the trajectory of the spacecraft .Equations of motion: \dot{V} = -\frac{D}{m} - g\sin{\theta} \dot{\phi} = -\frac{V\cos{\theta}}{R+h} \dot{\theta} =...
  23. L

    Apollo 11 liftoff acceleration function

    Hello, Recently I saw a youtube video of the Apollo 11 launch with time and velocity data. I took data in 5 second increments and put the data in my graphing calculator. I used a quadratic regression to come up with a velocity time function. I then differentiated this function to come up...
  24. B

    Furthest Earthlings From Earth: Apollo 13 or Cow?

    Now, we all know that Apollo 13's slingshot trajectory around the moon carried the august crew of that storied ship further from Earth than any other human beings have ever been. However, the ancient nursery rhyme assures us that the cow jumped over the moon. Looking into the physics of bovine...
  25. W

    Is Apollo 18 Just Space Propaganda?

    "Apollo 18", worthless thrills. Just saw this movie trailer. It looks like pure BS. If anything I'd call it botched entertainment for substituting the spirit of progress and exploration that characterised the moon landings with fear and superstition. Its practically propaganda...
  26. C

    Apollo spacecraft Homework Help

    Homework Statement On April 11, 1970, Apollo 13 was launched at Kennedy Space Flight center, Florida LC 39A. Appollo 13 carried Astronaunts James A. Lovel, John L Swigert, and Fred W. Haise on their voyage to the moon. However, two days into the flight and 321,860 km from Earth when stirring...
  27. Mech_Engineer

    Apollo 11: Mankind's First Steps on the Moon

    On July 20, 1969 American astronauts Neil Armstrong and Buzz Aldrin became the first men to set foot on the moon, also being the first men to ever land and set foot on another celestial body. To this day 41 years later, the Apollo program stands alone in: Sending humans beyond low Earth orbit...
  28. A

    Can Telescopes Capture Photos of Apollo Moon Landing Equipment?

    Hi. I was just reading a thread on the distance of the moon from the Earth on another thread, and it reminded me of a converstion with a guy a long time ago, that I haven't had resolved - even in my own mind. This guy was a 'moon landing hoax' type. I was pointing out to him the absolute...
  29. L

    Apollo 13/ October Sky Physics

    1. What are two examples of physics found in Apollo 13 or October Sky Physics 3. When they slingshot around the moon and in October Sky when they do the projectile and when the mine caves in. I need one more for Apollo 13..with explanation please
  30. A

    Discover the Fascinating Technology Behind the Apollo Missions

    I hope this is the right forum for this question. If not, I apologize. I'm looking for a book that details the Apollo systems and how they were used to get us to the moon. Ideally I'd like to see details of the various components, where they fit and what they do. I have some engineering...
  31. M

    Apollo 11 launch at 500 frames per second

    http://www.petapixel.com/2010/04/26/apollo-11-launch-at-500-frames-per-second/ High speed footage of the Saturn V's engines starting and lift-off with a very informative technical commentary.
  32. S

    What Really Happened to the Apollo Flag?

    Been watching "For All Mankind" footage of the Apollo Mission, and have one question I understand that the moon has no atmosphere and so the flag that was planted on the moon stays stretched out and streight, but this point I am rather confused by the footage of the documentary as when it was...
  33. M

    How can I solve this nonlinear ODE homework on Apollo reentry?

    Homework Statement http://www.math.udel.edu/~moulton/Apollo%20EC.pdf This is the full problem that I am working on for my ODE class. Homework Equations I would figure acceleration equals the second derivative so a=d^2s/dt^2 and V=ds/dt like the hint says. The Attempt at a Solution I...
  34. I

    Orbital Period of Apollo Mission

    Homework Statement On each of the apollo missions the command module was placed in a very low aprox circular orbit above the moon. Assum the avrg hieght was 60km above surface of moon and moons radius is 7738km. (Mass of moon=7.34x10^22kg) What was the command modules orbital period...
  35. B

    What Factors Influence the Re-entry of Apollo 13's Command Module?

    My Physics class is doing a Nasa project where we divided up the path a saturn-v shuttle takes. My group is working on the re-entry after the pod has been ejected. Our end result will be a spreadsheet of the return to Earth till landing. If anybody has some helpful websites or just want to list...
  36. M

    Apollo 11 UFO Encounter: What Do We Know?

    Anyone know anything about this? I tried searching for more information but that quickly turned up pages related to "alien bases on the dark side of the moon," so I gave that up.
  37. P

    Calculating Apollo 13 Command Module Drag Coefficient

    So, after looking at all the stuff those geniuses up at NASA came up with, I'm trying to figure out how to get the drag coefficient for the Apollo 13 command module reentry. Heres the stuff I thought were important: Entry-interface 400,000 ft 36,129fps Drogue chutes deploy at...
  38. M

    Apollo 1 command Module Pressure/Force

    Homework Statement What would have been the force on the hatch of the Apollo 1 command module (Before the fire) during the "plugs out test" Homework Equations more info 14.8 PSI of pressure outside of the module and 17.5 PSI 1 PSI= 6 894.75729 pascals. 14.8 x 6894.74=102 042.152...
  39. R

    How did Apollo get to the moon?

    Q: What kind of trajectory was used? And why was it used over the Hohmann transfer? The time of flight to the moon on Apollo 11 was 100 hours, 39 minutes 53 seconds. The time of flight for a Hohmann transfer would have been 119 hours from my calculations. I've done some research and found...
  40. M

    Was Physics Misrepresented in the Movie Apollo 13?

    Apollo 13 and "bad" physics Hey everyone. I'm new to this site becasue i thought you guys might be able to help me out with something. For a report, i am to find two "good" uses of physics and two "bad" uses of physics in apollo 13 and to explain why they are good or bad uses, using...
  41. Ivan Seeking

    What did the Apollo 11 crew see while on their way to the moon?

    http://www.cohenufo.org/unsolved.html#aldrinapollo11 See in particular the videos on page two. It is claimed that this case is not resolved. I was aware of the story but never saw the video or the specific claims made by Aldrin, which can be seen on the show cited: "First on the Moon: The...
  42. P

    The Apollo Laser Ranger Retroreflector Experiment

    Does anyone know the reference and when the results of this was first published? My apologies, but my scientific literature searching skills are limited to biological science. I can't help wondering if given the state of the technology of the early 70s whether this might not have been...
  43. Pengwuino

    Apollo landings to be photographed

    http://www.guardian.co.uk/international/story/0,3604,1530611,00.html Will it end all the conspiracy theories....... probably not
  44. N

    Honeysuckle Creek 35th Apollo Anniversary

    Honeysuckle Creek 35th Apollo Anniversary Question: Who received the first images of Men walking on the Moon? Answer: Honeysuckle Creek did. Question: Who received the first images from the Viking Probes/Landers on Mars? Answer: Honeysuckle Creek/Tidbinbilla did. Honeysuckle Creek...
  45. S

    Moon-Earth Position: Apollo 8 Photo Examined

    Since the moon always has the same side facing Earth, shouldn't the Earth always be in the same position in the sky when observing from the moon? There's a photo taken by the Apollo 8 crew in a book I have that claims the Earth is rising above the horizon of the moon. The book is "The Rough...