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RNA compound and vitamin B3 found in samples from near-Earth asteroid

cnn.com

11–20 of 110 posts

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#11
>“Since the Hayabusa2 spacecraft collected two samples directly from asteroid Ryugu and delivered them to Earth in sealed capsules, contamination can be ruled out.”

I seriously doubt that it could be "ruled out" just like that.

For one, the spacecraft (or the empty capsules) could have been pre-contaminated before their launch.

Second, the capsules could have been contaminated after arrival even if they were "sealed" (perhaps the seal had issues, or maybe it happened when they opened them, since one assumes they couldn't test still sealed capsules, they'd have to open them).

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#12
post #5

This has gotta add weight to the Panspermia hypothesis. Panspermia is a hypothesis that suggests life on Earth may have originated from microorganisms or organic matter that traveled through space, potentially from other planets or moons in our solar system or even from other star systems.

I don't think it gives more weight to panspermia.

Rather, IMHO, it gives us more information on how the conditions on Earth might have been when life emerged. We're getting more and more clues that a lot of the basic blocks of life are present in asteroids and thus might have been present on the primordial Earth as well in some watery soup where life emerged.

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#13
post #5

This has gotta add weight to the Panspermia hypothesis. Panspermia is a hypothesis that suggests life on Earth may have originated from microorganisms or organic matter that traveled through space, potentially from other planets or moons in our solar system or even from other star systems.

> Panspermia is a hypothesis that suggests life on Earth may have originated from microorganisms But where did the microorganisms on the asteroid come from?

Space Balls

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#14
post #11

> “Since the Hayabusa2 spacecraft collected two samples directly from asteroid Ryugu and delivered them to Earth in sealed capsules, contamination can be ruled out.” I seriously doubt that it could be "ruled out" just like that. For one, the spacecraft (or the empty capsules) could have been pre-contaminated before their launch. Second, the capsules could have been contaminated after arrival even if they were "sealed…

I wonder if there's a "control group": a tiny but identical container that goes through all the same steps. Nothing can ever be proof that it wasn't contaminated or a seal was broken on the real but not the control container, like, nothing will convince an Internet conspiracy theorist, but a control vessel and a handful such missions ought to prove beyond reasonable doubt that it wasn't contaminated from earth. I'm personally already willing to trust that they thought of (and controlled for) these things and more, since it's their job and we're just thinking out loud here.

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#15
post #11

> “Since the Hayabusa2 spacecraft collected two samples directly from asteroid Ryugu and delivered them to Earth in sealed capsules, contamination can be ruled out.” I seriously doubt that it could be "ruled out" just like that. For one, the spacecraft (or the empty capsules) could have been pre-contaminated before their launch. Second, the capsules could have been contaminated after arrival even if they were "sealed…

[flagged]

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#16
post #5

This has gotta add weight to the Panspermia hypothesis. Panspermia is a hypothesis that suggests life on Earth may have originated from microorganisms or organic matter that traveled through space, potentially from other planets or moons in our solar system or even from other star systems.

pseudo-panspermia, the blocks of life comes from space, but life emerges in a planet.

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#17
post #5

This has gotta add weight to the Panspermia hypothesis. Panspermia is a hypothesis that suggests life on Earth may have originated from microorganisms or organic matter that traveled through space, potentially from other planets or moons in our solar system or even from other star systems.

The opposite. If such compounds are common in asteroids absent life, then the rise of RNA/DNA on different planets is more likely to be happening spontaneously, without anything traveling between planets. This finding suggests that some building blocks of life may be very common, increasing the chances of life arising locally without need of panspermia.

Is that the opposite?

It's an alternative explanation, but I'm not sure if this is evidence against panspermia either.

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#18
post #15
post #11

> “Since the Hayabusa2 spacecraft collected two samples directly from asteroid Ryugu and delivered them to Earth in sealed capsules, contamination can be ruled out.” I seriously doubt that it could be "ruled out" just like that. For one, the spacecraft (or the empty capsules) could have been pre-contaminated before their launch. Second, the capsules could have been contaminated after arrival even if they were "sealed…

[flagged]

>You better alert the scientists that they missed something, then! That's some serious business, they must be alerted to their failings immediately!

Yes, unimaginable that scientists could have made a mistake that a layman could spot, or just said something to create good PR to their mission, even when it's inaccurate.

They also never unwittingly or intentionally BS in their research papers, right? And only a colleague (or a higher level intellect than theirs) could spot a mistake... /s

>Seriously though, do you really think these scientists are making claims, being widely reported, without having made the same conclusions and analysed the situation with all the data, not just that reported through a story on the Internet .. ?

Seriously, similar blunders have happened time and again.

  In 1996, scientists at NASA declared that a 6.3-ounce 
  rock, broken off from a Mars meteorite discovered in 
  Antarctica in 1984, contained flecks of chemical compounds 
  — polycyclic aromatic hydrocarbons, magnetite, and iron 
  sulfide — that suggested the existence of bacteria on the 
  Red Planet 3.6 billion years ago. "August 7, 1996, could 
  go down as one of the most important dates in human 
  history," intoned one newspaper report. But within two 
  years the theory began to crack.

  Traces of amino acids found in the rock, crucial to life, 
  were also found in the surrounding Antarctic ice. More 
  damning, other non-Martian rocks — rocks from the moon, 
  where it is clear life does not exist — showed the same 
  "evidence" of life. By November 1998 an article in Science 
  declared "most researchers agree that the case for life on 
  Mars is shakier than ever."
>Because it seems you're smarter than rocket scientists. Are you a brain surgeon, then?

This particular case aside, you appear to believe that you need to be smarter than X person to be able to spot an error they made. It doesn't take a very high IQ however to see the error in the above idea.

In any case, based on the insults, did you just wanted to lash out on someone to feel better for yourself?

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#19

ASTEROIDS! Crunchy rocks of breakfast cereal from the depths of space! Delicious with cold milk. Fortified with RNA compound and vitamin B3. No added complex organic molecules.

I just want Asteroid that tastes like real Asteroid!

Re: RNA compound and vitamin B3 found in samples from near-Earth asteroid

#20

They didn't detect RNA which would be extraordinary. What they detected is Uracil, one of the molecules that is found in RNA. They didn't found any other nucleotides. " Other DNA/RNA nucleobases were not positively identified in both the A0106 and C0107 samples. This does not necessarily exclude a possibility that those nucleobases are present in the Ryugu samples, but just they may be below the detection limit under…

> For having RNA you need a molecule composed of roughly 200 nucleotides.

miRNA are order of magnitude smaller.

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