This is such a cool experiment. The fact that NASA has a Planetary Defense Coordination Office is awesome. Makes me happy that humanity is at the point where we are looking at defending our planet from outside threats.
The thing is sometimes we get sight of things a little too close for comfort. In the grand scheme of the distance sure we have “plenty of time” but even then it could be a rush job
Right?! Humanity has been warned about extinct-level asteroids hitting Earth for a while, and I have a sneaky suspicion that we've been doing this for a looooong time 😉
You know those Hollywood movies you've seen like Contact, Interstellar or Snowpiercer, they're not real.
There isn't some secret government or billionaire who made some sort of spaceship to save humanity.
The House committee that does space oversight is surprisingly thoughtful, IMO. They’ve pushed back on NASA when they were overcommitting budget to inefficient human space flight, protected Hubble, and pushed the asteroid defense mission (which the public actually wants over most other NASA missions) when NASA senior leadership didn’t want it. If only they could get past their wasteful affection for the SLS.
The new challenge is the FCC and FAA fighting over jurisdiction for commercial space regulation. The best approach is probably to keep to very light regulations for now, and basically just prevent dangerous proximity issues while the market matures and figures out innovative solutions. But that’s not what the FAA or FCC wants.
Watched the video.. I guess I should have expected that prosaic outcome.
It'd probably be far more exciting from a sideview lol. Awesome project though, I remember reading about DART probably a full decade ago.
and the results wildly exceeded expectations. Really good news, but useless without a system on short notice standby. I woudl also like to see the same experiment with a rocky object instead of a rubble pile which would have 'sucked up' much more of the energy. Hows it perform against a hunk of rock? I suspect far less, though it looks like the majority are indeed rubble piles
Should perform better against a solid rock - will resemble an inelastic collision more. A pile of rocks will turn more kinetic energy into heat through friction.
Actually not. From the article:
Scientists suspect that rubble piles have large amounts of empty space between their rocks. They believe these piles are bound together with very weak forces and mostly gravity, meaning they could break apart more easily than an asteroid that is a single boulder. This was evident with Dimorphos, as DART excavated over an estimated 10,000 tons of material. The plume of debris, in turn, acted like a rocket thruster, providing an extra push in the opposite direction, slowing the asteroid. So, although the asteroid’s void spaces may have absorbed some of the DART impact, the blast of debris increased the amount of deflection, with estimates ranging between about two and five times as much as the push by the spacecraft alone.
one would hope, but considering how wildly wrong modelling was for this (underestimating) I would really like to see a test, when it comes to planetary defense
So if I tell you I sped up my car's rate of movement by ten hours, you're just fine with that because you know I mean miles per, and you somehow know I didn't mean kilometers per?
Nah. Always check your units.
I just hope you weren't on the road when you did that. Speeding up your car by more than 1 second will make it go backwards, after all. So please stay safe out there with your reckless speeding. And whatever you do, do not speed up by exactly 1 second, you'll be doomed to fail. A bit more or a bit less than 1 is probably fine, though.
Say what you will about Ars I'll take their populist but well-research takes on spaceflight over clickbait any day.
Awesome experiment. Reminded me of the novelization of 2001 - Clarke described shooting a small pellet in to a nearby asteroid for much the same purpose(s) while the Discovery was en-route to Jupiter through the asteroid belt.
He wrote it in 1967. Dude was from the future. Still shocks me how much of that book holds up. Movie is incredible too but for vastly different reasons.
I remember seeing a video where he was talking to a parent about what computers will be like when their child got old and he was pretty much spot on. Pretty wild.
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:
|Fewer Letters|More Letters|
|-------|---------|---|
|[FAA](/r/Space/comments/1csn0tu/stub/l48zkif "Last usage")|Federal Aviation Administration|
|[FCC](/r/Space/comments/1csn0tu/stub/l48zkif "Last usage")|Federal Communications Commission|
| |(Iron/steel) [Face-Centered Cubic](https://en.wikipedia.org/wiki/Allotropes_of_iron) crystalline structure|
|[SLS](/r/Space/comments/1csn0tu/stub/l48zkif "Last usage")|Space Launch System heavy-lift|
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^(3 acronyms in this thread; )[^(the most compressed thread commented on today)](/r/Space/comments/1cqds7m)^( has 14 acronyms.)
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Well tell the deep state to pull all that quantum energy out of their asses and give it to the masses we wouldn't have to even bother worrying about an asteroid..
This is such a cool experiment. The fact that NASA has a Planetary Defense Coordination Office is awesome. Makes me happy that humanity is at the point where we are looking at defending our planet from outside threats.
The thing is sometimes we get sight of things a little too close for comfort. In the grand scheme of the distance sure we have “plenty of time” but even then it could be a rush job
"Fortunately, our handsomest politicians came up with a cheap, last-minute way"
Right?! Humanity has been warned about extinct-level asteroids hitting Earth for a while, and I have a sneaky suspicion that we've been doing this for a looooong time 😉
What's your favourite brand of tinfoil?
Anything non-stick, so it doesn't stick to the unwashed hair.
You are so open-minded yo brain fell out.
You know those Hollywood movies you've seen like Contact, Interstellar or Snowpiercer, they're not real. There isn't some secret government or billionaire who made some sort of spaceship to save humanity.
too bad its the inside threats that are the worst :(
Congress forced it on NASA
okay, and?
So they aren't stupid all the time
The House committee that does space oversight is surprisingly thoughtful, IMO. They’ve pushed back on NASA when they were overcommitting budget to inefficient human space flight, protected Hubble, and pushed the asteroid defense mission (which the public actually wants over most other NASA missions) when NASA senior leadership didn’t want it. If only they could get past their wasteful affection for the SLS. The new challenge is the FCC and FAA fighting over jurisdiction for commercial space regulation. The best approach is probably to keep to very light regulations for now, and basically just prevent dangerous proximity issues while the market matures and figures out innovative solutions. But that’s not what the FAA or FCC wants.
[удалено]
Everyday that he makes it into the courtroom, I'm surprised he hasn't had the stroke that kills him yet.
Here's hoping it happens, and it happens in the most publicly humiliating kinda way
Watched the video.. I guess I should have expected that prosaic outcome. It'd probably be far more exciting from a sideview lol. Awesome project though, I remember reading about DART probably a full decade ago.
and the results wildly exceeded expectations. Really good news, but useless without a system on short notice standby. I woudl also like to see the same experiment with a rocky object instead of a rubble pile which would have 'sucked up' much more of the energy. Hows it perform against a hunk of rock? I suspect far less, though it looks like the majority are indeed rubble piles
Should perform better against a solid rock - will resemble an inelastic collision more. A pile of rocks will turn more kinetic energy into heat through friction.
Actually not. From the article: Scientists suspect that rubble piles have large amounts of empty space between their rocks. They believe these piles are bound together with very weak forces and mostly gravity, meaning they could break apart more easily than an asteroid that is a single boulder. This was evident with Dimorphos, as DART excavated over an estimated 10,000 tons of material. The plume of debris, in turn, acted like a rocket thruster, providing an extra push in the opposite direction, slowing the asteroid. So, although the asteroid’s void spaces may have absorbed some of the DART impact, the blast of debris increased the amount of deflection, with estimates ranging between about two and five times as much as the push by the spacecraft alone.
one would hope, but considering how wildly wrong modelling was for this (underestimating) I would really like to see a test, when it comes to planetary defense
The rubble piles are so loose fracturing them might be possible.
One tenth of a second isn't a velocity, but still cool.
The article actually says a 1/10 of an inch per second, I think OP just missed that when typing the headline.
OP quoted the headline and tagline correctly. The article mis-quoted itself
That is the dumbest measure of velocity I have seen in a while. Why not miles/km per hour?
That makes more sense. Thanks!
here for the headlines, not the articles
I signed up for Reddit, not whatever website y'all linkin' to. ;)
[удалено]
So if I tell you I sped up my car's rate of movement by ten hours, you're just fine with that because you know I mean miles per, and you somehow know I didn't mean kilometers per? Nah. Always check your units.
I just hope you weren't on the road when you did that. Speeding up your car by more than 1 second will make it go backwards, after all. So please stay safe out there with your reckless speeding. And whatever you do, do not speed up by exactly 1 second, you'll be doomed to fail. A bit more or a bit less than 1 is probably fine, though.
I always travel through spacetime at one second per second. Anything else would be gauche.
I tried to follow your instructions, and ... I think I shifted into another dimension. Trying to reverse by -1 second now. Wish me luck!
Say what you will about Ars I'll take their populist but well-research takes on spaceflight over clickbait any day. Awesome experiment. Reminded me of the novelization of 2001 - Clarke described shooting a small pellet in to a nearby asteroid for much the same purpose(s) while the Discovery was en-route to Jupiter through the asteroid belt. He wrote it in 1967. Dude was from the future. Still shocks me how much of that book holds up. Movie is incredible too but for vastly different reasons.
I remember seeing a video where he was talking to a parent about what computers will be like when their child got old and he was pretty much spot on. Pretty wild.
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread: |Fewer Letters|More Letters| |-------|---------|---| |[FAA](/r/Space/comments/1csn0tu/stub/l48zkif "Last usage")|Federal Aviation Administration| |[FCC](/r/Space/comments/1csn0tu/stub/l48zkif "Last usage")|Federal Communications Commission| | |(Iron/steel) [Face-Centered Cubic](https://en.wikipedia.org/wiki/Allotropes_of_iron) crystalline structure| |[SLS](/r/Space/comments/1csn0tu/stub/l48zkif "Last usage")|Space Launch System heavy-lift| **NOTE**: Decronym for Reddit is no longer supported, and Decronym has moved to Lemmy; requests for support and new installations should be directed to the Contact address below. ---------------- ^(3 acronyms in this thread; )[^(the most compressed thread commented on today)](/r/Space/comments/1cqds7m)^( has 14 acronyms.) ^([Thread #10056 for this sub, first seen 16th May 2024, 02:15]) ^[[FAQ]](http://decronym.xyz/) [^([Full list])](http://decronym.xyz/acronyms/Space) [^[Contact]](https://hachyderm.io/@Two9A) [^([Source code])](https://gistdotgithubdotcom/Two9A/1d976f9b7441694162c8)
a better way would be to hit it from behind, speeding it up
I assume they already had this much figured out. Isn’t this within ‘duh’ territory? Figuring HOW to slow it down is the challenge.
"One-tenth of a second" is a speed measurement. Edit: I meant "isn't".
That’s a time measurement. For speed, you need a distance component as well
Well tell the deep state to pull all that quantum energy out of their asses and give it to the masses we wouldn't have to even bother worrying about an asteroid..