Do we know what we did with radio when it was first discovered to know what it would be like if it bounced back to us? Or would it not have been strong enough?
his stupid fucking internet satellites make planning getting things into orbit real hard. also it’s not even his tesla in space. he stole it from mark eberhart
And his 6,000+ starlink pieces of trash in orbit have made earth based telescopes worse. They get in the way of the shot, and the emissions are something like 10x worse than promised.
Him and that tetraethyl lead guy. Just absolute stains.
SpaceX rockets don’t add Methane to the atmosphere. When you burn something, you’re not adding that thing to the atmosphere, you’re adding byproducts from the combustion, and Methane isn’t one of the byproducts of any rocket fuel.
Starship uses methane as a fuel, but that’s not at all the same thing. Methalox engines are one of the cleanest burning rocket fuels after Hydrolox. When burnt, methane just becomes CO2 and water vapor along with a bit of NOx (Nitrous Oxide, aka laughing gas, aka that boost you see in Fast and the Furious) as well.
Falcon 9 and Falcon Heavy are Kerolox (Kerosene, RP-1) engines. RP-1 is basically just a highly refined kerosene. When burnt, it will produce CO2, water vapor, NOx, carbon soot, carbon monoxide (which again mostly becomes CO2) and a little bit of sulfur compounds. The exhaust is nasty but it is not that different from what a normal internal combustion car produces. And even with the large amounts, it is still lower than what cars/trucks/SUVs output to get everyone in your city back and forth to work, the grocery store, and home on a daily basis.
Rocket engines don’t just immediately start, propellant has to be flowing through the turbo pumps before the flames start. Same at shut down. On the video you can see vapour coming out. That’s either methane or oxygen. How much of either? We can’t say because spacex doesn’t talk much about it. Same with ‘venting’ which happens quite a lot as shown on the videos as well. Whether it’s a little or a lot, it’s definitely more than was there before launch.
And that’s on a successful launch. Scott Manly talks about the last launch and shows how the methane levels were draining on the ship way faster than the oxygen levels, pointing to at least incomplete combination and probably methane puking out the back. Methane may be ‘clean’ when it’s burnt under optimal conditions, when it’s conflagrated in a RUD it’s less so.
Yes, yes, “it’s a drop in the bucket, it’s a tiny percentage of blah blah blah” which works fine until they start launching 3 per day. Then the question of what methane (a highly potent greenhouse gas) does when it’s directly added into the upper atmosphere gets answered.
NOx is not Nitrous Oxide and is not short for Nitrous Oxide. Nitrous Oxide is specifically N2O. NOx refers to both Nitric Oxide (NO) and Nitrogen Dioxide (NO2), both of which are far, far more damaging to health and atmosphere than N2O. NOx emissions are the reason diesel is generally nonexistent in US passenger vehicles - not even great mpg numbers have sufficiently-low NOx emissions.
Even if it included N2O, using nomenclature with a variable like “NOx” and grouping it all together as one inert byproduct vastly underrepresents harm. Imagine if you referred to another group as “COx” but saying it’s relatively inert and easily detected by way of a burning lung sensation but feeds plants so it’s not all bad because Carbon Dioxide (CO2) has that effect. Carbon Monoxide (CO) is completely left out of that description and will silently kill you.
The part you’re not talking about is that there’s no catalytic converters on rockets tough, so it’s more like running a carbureted car than a modern car.
that he keeps metering access to because he has a clear favorite in that war and it ain’t Ukraine. have you talked to any Ukrainians how they feel about the world’s richest nazi? because the Ukrainians i’m in community with fucking hate that guy and actively seek technological edges to treat starlink as actively hostile to their usage.
Not really here, this would have been a dummy weight either way since it was the test payload for Falcon Heavy. So *something *was going to be sent up. The Tesla specifically was a publicity stunt, but a similar weight was going into a similar orbit.
The bigger question is why they lost tracking on it in the first place to where they weren’t sure what it was. This wasn’t from any sort of failure, this was a planned and fully successful launch payload into a planned orbit.
Tracking doesn’t necessarily have to be lost for this kind of thing to happen. The Rosetta spacecraft was accidentally given a provisional asteroid designation in 2007.
She’s very popular and I would imagine gets lots of messages. I’m not sure if she would prefer to have you message her directly or post on the subreddit. Either way, Andromeda321 is the real deal. Good luck! Be sure to post your pics here, I bet they’ll be real cool!
Awesome, thanks! Don’t hold your breath, though. Right now, this thing is paying for itself, and it’s not much. My first goal is to get a used DSLR so I can take promotional pictures. I know it’s a manually slewed scope, but I’m not trying to take crazy multi-hour exposures, I’m trying to show what people might expect to see IRL, and take promotional shots of people on the class. Then, I’ll probably look at making the radio telescope rig more seriously, hopefully before summer.
original budget estimates for operations are now too low due to inflation
the entire budget is 1/4000 the military budget, but instead of shoring up this rounding error to make sure that one of our country’s most impressive engineering feats stays usable, we could always just throw it out to bomb more brown kids.
Better fine the US government or NASA for all the Saturn V upper stages that are floating around up there as well. Nearly every Saturn V third stage was sent into an orbit around the sun after the Lunar injection maneuver, they’re all still up there. In fact, they lose track of those and “rediscover” them all the time because. The three-body problem is not fully solvable with our current technology, and the further out you get from initial conditions the less accurate calculations become.
There oughtta be a sci-fi short story competition using this for a basis - what happens when aliens eventually come across this bizarre piece of junk in space?
This entire thread is filled with people that know absolutely nothing about Space but the basics modern “media” poorly conveys, but feel the need to comment and display their ignorance proudly just because they hate Musk. It’s quite sad actually for an actual Astronomy community, there’s worse discussion in here than reddit.
I don’t have any recommendations, unfortunately. But this is very interesting! I have gotten into software-defined radio recently and radio astronomy seems like a good direction to continue learning. Hopefully someone has some good advice.
What a disgusting clickbait title 🤮. The comet is not “racing towards Earth” any more than say Mars is (and Mars comes closer to Earth than this comet will). Maybe some day we’ll live in a world where journalists do not sensationalize headlines with a mix of Deep Impact and The Ninth Gate, but today is not that day.
The poster is just submitting the article as titled, and the scientists are just making cool observations not bothering anyone. The fault for clickbait lies solely with the journalists/editors. I wish instead of continuing the practice from that other site of “submission title must match article title”, we normalize the culture of writing our own plain language de-clickbait-ified titles, the way HackerNews does it.
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