Recent comments in /f/space

egregiouscodswallop t1_j5uffub wrote

I'm too young to remember the Challenger personally but here are two theories when it comes to making documentaries: 1) his public appearance made him seem important at the time, but he was essentially a mouthpiece for others who were more entrenched in the story and 2) the creators could be either too old or too young, either assuming everyone would already know him or that he was some irrelevant character since he never came up during interviews. Either way, sounds like he could have been cut for time. Especially if his role was mainly media based since media offer us a window to the drama and the documentarian was already backstage in the thick of it.

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A_Vandalay t1_j5ub0sy wrote

Depends what you mean by make it big. Some will likely succeed and even thrive as launch companies. However launch is a particularly difficult part of the industry to succeed in. The overwhelming majority of the revenue in space is made from providing satellite services not launching them. There is a reason SpaceX is trying to break into that market. Launch is incredibly competitive and is likely to become more so as reusable rockets increase the development required to be competitive while lowering the expected revenue per launch. All of these problems are exacerbated by the sheer number of small sat providers entering the market. There just isn’t the market demand to sustain all of these providers. 1-2 maybe but there are several dozen. And almost 10 with real hardware/potential to be operational in the next year or so. From the outside it looks like that whole segment of the industry is bubble that is about to pop, and the only ones that will survive long term will be the ones that can progress beyond small launch to the medium/heavy lift as both relativity and Rocketlab are working towards.

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Radixx t1_j5u6st3 wrote

We went there for the last one in 2017 and found a great spot in the Giant City state park just south of the city. Big field with unobstructed views and free! The park employees had maps and were very helpful. 10/10! We live in Dallas so staying local for the 2024 one.

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svarogteuse t1_j5u45an wrote

Newton's law: A body in motion stays in motion unless acted upon by on outside force.

This largely depends on where you are in space but there is always an outside force which is some body with gravity.

If you are near a significant body of some kind (moon, planet, star) the frisbee is going to be influenced by the gravity of that object. Technically its going to influenced by your own gravity but you can through it hard enough to overcome that. The frisbee is largely going to inherit your status since the energy you impart to it isn't enough to significantly change where it goes. On that large body, even an airless one its going to land maybe a long way away, but be pulled downward until it impacts because you cant toss it with enough velocity to orbit, or reach escape velocity.

If you are in orbit it will likely also remain in orbit around the same body. It retains the momentum you had plus whatever change in velocity you give it, which isn't likely enough to cause it to leave that orbit either to impact or to escape.

If you are in/near a small body like say a 1km asteroid you might be able to toss it with enough force to escape the body, but its going to go into orbit around the sun with roughly the same orbit as the body you started in/near.

If you are in deep space, lightyears from any body yes its going to go in a straight line as far as you can tell but you are likely in orbit around the center of the galaxy so it will be too. Its just going to be in a big circle one that takes 226 million years to complete.

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triffid_hunter t1_j5u31ax wrote

Depends where in space, and on your definition of a 'straight line'.

If you're in intergalactic space, yeah basically - although it would slowly get broken up by cosmic rays of various sorts.

If you're in LEO, it would end up in a very slightly different orbit to you - although in some ways an orbit is a type of straight line.

It probably wouldn't stay up there for too long, atmospheric drag would pull it down a lot faster than a human or a space station due to its higher surface area vs mass ratio - also it might get melted by sunlight.

In other areas in space, you'll have some blend of those effects (plus other smaller ones like solar wind) depending on local conditions.

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Nonsenseinabag t1_j5u2ory wrote

It would enter an orbit based on how much momentum it had. If you were able to get it to escape earth's atmosphere, it might be in orbit around Earth until it decayed from friction with the small amount of atmosphere that's up there.

If you managed to chuck it hard enough to escape Earth's gravity, then it would enter solar orbit and would have a similar orbital path as Earth and the two may eventually intercept again, and it would return to earth.

If you managed to escape solar gravity... quite a feat! And it would exit the solar system and travel until it encountered something to pull it into its gravity well.

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space-ModTeam t1_j5u2lr2 wrote

Hello u/Ok-Bug-6129, your submission "What would happen if you threw a frisbee in space? Would it just move in a straight line until caught?" has been removed from r/space because:

  • Such questions should be asked in the "All space questions" thread stickied at the top of the sub.

Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.

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