Comments by "Astrum" (@astrumspace) on "How Can Hubble See Distant Galaxies Clearly, But Not Pluto?" video.

  1. Light does make a difference yes, but Hubble could do as long of an exposure as it likes if that was the only obstacle. The real issue with dim light is that Pluto rotates, so too long of an exposure means a blurry image.
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  2.  @ontoverse  it's a great one to point out if you are star gazing with friends. Guaranteed "woahs" :)
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  3. There was a lot of people who have asked this question in the comments of my videos, too many to specifically thank here, but thank you all! If you have a space related question that you want to see a video on, ask away, and yours might be picked next!
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  4. New Horizons has already sent all the Pluto data back. I think it took about 2 years. Since then it visited Ultima Thule, and has since sent back all the data for that too. It might get one more encounter before it runs out of fuel. About movement, Earth's movement doesn't really make a difference becuase Hubble tracks the objects. So galaxies are easy targets. Pluto rotates, that is another issue there. Too long of an exposure and it's already rotated a bit.
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  5. The rotation means you can't do a long exposure, but even if you could, the resolution is still too low
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  6. That was taken with the radio telescope EHT. It's very different from Hubble because it is an array telescope plus it only looks in radio waves. I did a video on it https://www.youtube.com/watch?v=rzWFHFMToZA
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  7. Well if they aren't going to send probes there, then they should! I don't know how good JWST will be at it to be honest because its an infrared telescope. We'll see!
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  8. Very basically, longer exposures
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  9. Imagine this image is take with the greatest zoom camera we possess. If you look at the initial image, you'll see it's all in focus, the flower, the building, the trees. But the flower has less pixels than the building, that's why it looks blurry, not because it's out of focus. And that is the issue.
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  10. Oh my goodness, can't resist a Father Ted reference 😁
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  11. Well the blurry photo of the flower isn't blurry because it is out of focus, look at the zoomed out view and you can see it is in focus. It's blurry because at that size, there's less pixels to distinguish details. The building on the other hand, even though its far away, is massive, so even at this distance there are plenty of pixels to see detail. Same applies to Pluto and the galaxies. Hubble simply can't zoom in enough, at its max zoom Pluto is only a few pixels across. Hope that clarifies it a bit!
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  12. My favourite song from it!
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  13. This is the time where paying attention to trigonometry in school would have come in handy :) and we all thought we would never use it in the real world! Basically, the parralax method is accurate, or when we sent probes off to distant planets, they would have never made it. So considering we DO know the distances of how much we move, we CAN use parralax to determine the distances to Cepheid Variables. If you don't want to accept that, I suggest you take a course in astrophysics to really try and grasp this concept, because I don't know what more a comment section on YouTube is going to help 😅
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  14. At this point I assume you are just trolling :P
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  15. Luckily I wasn't aiming this video at them, rather the people that enjoy astronomy but just don't know much about it yet :)
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  16. It's a radio telescope, not really the same as something like Hubble. If you had an array of visible light telescopes like the EHT then that could work
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  17. Ok imagine then that the still was taken with the most powerful zoom lense we possess.
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  18. Greg thanks for trying to enlighten the comment section! It's appreciated.
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  19. Just an interesting detail that gets skipped somehow!
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  20. Do you have a link? :)
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  21. Yes, this is my favourite song from it :)
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  22. I would love to, but haven't yet.
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  23. I loved the book so I should give that a go too!
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