The Astronomy Thread

  • Guest, it's time once again for the massively important and exciting FoH Asshat Tournament!



    Go here and give us your nominations!
    Who's been the biggest Asshat in the last year? Give us your worst ones!

iannis

Musty Nester
31,351
17,656
Why don't they just build like 30 of the things, daisy chain them, launch them into orbit, and then see wtf happens when you turn it on. They could still keep the one at the lab while they did it!

This is how The Rapture starts.
 

Merrith

Golden Baronet of the Realm
18,427
7,131

Araxen

Golden Baronet of the Realm
10,459
7,852
NASA released an animated gif of Pluto and Charon orbiting it.

rrr_img_96210.gif


I know all planets/dwarf planets wobble to some extent but the wobble on Pluto is much more pronounced then I've ever seen. Maybe it's because New Horizon's is still pretty far away. July can't come soon enough so we can get some clearer pictures.

NASA just released the best GIFs of Pluto so far | The Verge
 

Itzena_sl

shitlord
4,609
6
Keep waiting for the 'oh, it was a clock ticking too fast'-style headline for this but more and more keeps coming out about this EM Drive that sounds promising I guess.

NASAs seemingly impossible space engine looks more possible after latest test | The Verge
There's one of three ways this ends, in descending likelihood.

1) Whoops, experimental error but at least we know to watch out for X when doing similar testing from now on
2) Interesting but non-applicable SCIENCE! which fits some obscure or unloved corner of known phenomena.
3) Holy fucking shit reactionless engines and warp drives plus we need to re-write the laws of physics on our way to conquering the known universe.

To be perfectly fair, any of these are useful - even the first will make thenext"I have this engine design..." thing end a lot quicker. There's nothing wrong with learning from your mistakes, after all.

Why don't they just build like 30 of the things, daisy chain them, launch them into orbit, and then see wtf happens when you turn it on. They could still keep the one at the lab while they did it!
CubeSat - Wikipedia, the free encyclopedia

Bolt an EMDrive to the back of one of these rigged as a probe and point it into deep space then fire up the engine.
 

Mudcrush Durtfeet

Hungry Ogre
2,428
-757
NASA released an animated gif of Pluto and Charon orbiting it.

rrr_img_96210.gif


I know all planets/dwarf planets wobble to some extent but the wobble on Pluto is much more pronounced then I've ever seen. Maybe it's because New Horizon's is still pretty far away. July can't come soon enough so we can get some clearer pictures.

NASA just released the best GIFs of Pluto so far | The Verge
It's because the center of the Pluto-Charon system is not inside Pluto. Essentially, both objects orbit each other.
 

Furry

🌭🍔🇺🇦✌️SLAVA UKRAINI!✌️🇺🇦🍔🌭
<Gold Donor>
21,933
28,696
It would disprove relativity. I'd say thats a pretty big event
biggrin.png


I'll wait for more serious conformation though. The same scientific standard of proof applies to all science before I accept it.
 

1987

Bronze Baronet of the Realm
3,585
8,186
It's because the center of the Pluto-Charon system is not inside Pluto. Essentially, both objects orbit each other.
This. The moon is just much more massive compared to pluto than most "planets" moons. So they both orbit a point in space. Technically this is true for all celestial bodies (its the same way we detect exoplanets), but the similarities in mass are just much more pronounced with Pluto and its large moon.
 

Lenas

Trump's Staff
7,560
2,299
Charon is about half of Pluto's size. Our moon in comparison is about 50x smaller / 80x lighter than Earth.
 

Cad

scientia potentia est
<Bronze Donator>
25,447
49,132
Charon is about half of Pluto's size. Our moon in comparison is about 50x smaller / 80x lighter than Earth.
Charon is also about 20x closer to Pluto than the Moon is to earth.
 

Furry

🌭🍔🇺🇦✌️SLAVA UKRAINI!✌️🇺🇦🍔🌭
<Gold Donor>
21,933
28,696
It would disprove relativity. I'd say thats a pretty big event
biggrin.png


I'll wait for more serious conformation though. The same scientific standard of proof applies to all science before I accept it.
Someone negged me because nothing in science can be proven. What sort of neanderthal mongloids are being produced by our education system now adays that think proof means something is a fact? Never mind that proof does not mean proven.

Proof simply means compelling evidence that supports an idea. The standard of proof is a well established system for most fields of science, and is the point when observably something is almost certainly true. Confusing proof or proven with factual is idiotic. Take the recent boson discovery in particle physics. That was announced after it met the standard of proof for science. The speed of light is verified to the standard of proof. The gravitational constant is verified to the standard of proof. Countless other parts of science have been verified to the standard of proof, and it is the standard that science uses to differentiate between what could be true and what almost certainly is true.
 

Palum

what Suineg set it to
26,579
41,426
Someone negged me because nothing in science can be proven. What sort of neanderthal mongloids are being produced by our education system now adays that think proof means something is a fact? Never mind that proof does not mean proven.

Proof simply means compelling evidence that supports an idea. The standard of proof is a well established system for most fields of science, and is the point when observably something is almost certainly true. Confusing proof or proven with factual is idiotic. Take the recent boson discovery in particle physics. That was announced after it met the standard of proof for science. The speed of light is verified to the standard of proof. The gravitational constant is verified to the standard of proof. Countless other parts of science have been verified to the standard of proof, and it is the standard that science uses to differentiate between what could be true and what almost certainly is true.
Not true, Einstein had to pilot a spacecraft to light speed himself and read the speedo to confirm c.
 

Mudcrush Durtfeet

Hungry Ogre
2,428
-757
Charon is also about 20x closer to Pluto than the Moon is to earth.
This would actually make it MORE likely for the center of rotation to be inside the larger object. If the center of the moon was 20 times closer to the center of the Earth-Moon system, then the center of the Earth would also be 20 times closer to the center of the earth-moon system.
 

Tuco

I got Tuco'd!
<Gold Donor>
47,468
81,133
It would disprove relativity. I'd say thats a pretty big event
biggrin.png


I'll wait for more serious conformation though. The same scientific standard of proof applies to all science before I accept it.
I'm clueless about any of this stuff, wouldn't it just uhh, clarify relativity, and not disprove it?


Also as a layman, I don't understand how it's so difficult or takes so long to prove that the system is producing reactionless thrust or not. It's not like Rossi's bullshit ECat system (Energy Catalyzer - Wikipedia, the free encyclopedia) where he's trying to obfuscate what's happening to avoid being found out. I'm not judging the scientists involved, I just don't understand it.

Now that we see that the EMDrive works in a vacuum, what are the top explanations involved that explain the produced thrust given our current understanding?