Comments by "H. de Jong" (@h.dejong2531) on "Astronomers Answer When Will Pluto Collide With Neptune" video.

  1. You'd need about 75 times Jupiter's mass before ignition occurs.
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  2. No. Its magnetic field is not strong enough to do that.
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  3.  @ToddDouglasFox  There's a big difference between "we don't know if it works" and "we know that it doesn't work". Astrology sits firmly in the second category. To give one example: if astrology worked, we'd see this show up in statistics: people born on certain dates would be more accident-prone than others. Insurance companies study this for a living, and have found no correlation between date of birth and accident rates. The shift of the ecliptic is another big red flag. We may not know everything, but there are things we do know. Astrology has been proven beyond any doubt to be useless.
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  4. In 1976, someone retranslated a Sumerian text and claimed it talks about an unknown planet. Charlatans then claimed this planet (Nibiru) would destroy Earth in 2012 (coinciding with the end of one period in the Mayan calendar). When that didn't happen (and indeed, no new planet was visible in the night sky), charlatans moved on to the next bit of nonsense. The 1976 translation turned out to be full of errors. Data from archaeology and astronomy disproved the Nibiru claims. We have found actual planets much further out than this hypothetical one. Sedna has a 10,000 year orbit. So we know Nibiru doesn't exist, and any claims about a "planet 9" that will destroy us can be dismissed.
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  5. Astrology doesn't work. The best thing you can do to improve your life is throwing away those charts.
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  6.  @larryswindcatcher  We know a lot more than you think. We've mapped the magnetic fields in the solar system.
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  7. When you have 3 points of a planet's orbit, you can calculate its orbit. Depending on the accuracy of your data and the distance of the object, this can be done quickly: we've done this in less than a week for some of Saturn's moons. For Pluto, it took 1 year. No need to wait until 2178.
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  8. This has nothing to do with cancel culture. The current definition just wasn't working well any more for astrophysics purposes. Classification (=dividing things into categories) has always been part of science, because it makes it easier to have a discussion when everybody uses the same classification. When Galileo saw Jupiter and understood that it was a planet like ours, the solar system had two classes: anything in orbit around the Sun is a planet, anything in orbit around a planet is a moon. Then we started to discover asteroids, starting with the largest: Ceres. This was initially considered a planet. Then we discovered hundreds of smaller objects in similar orbits, and astronomers added a new class: asteroids. Ceres was moved from the Planet class to the Asteroid class. Then we discovered Pluto. Seemed to be alone in its region, so it was considered a planet. Then we discovered hundreds of smaller objects in similar orbits, and astronomers added a new class: dwarf planets. Pluto was moved from the Planet class to the Dwarf Planet class. The more objects you have, the more classes it becomes useful to divide them into. This is done everywhere in science. What most people call mosquitoes, biologists divide into several hundred species. Etc. In this case, a scientific classification has entered the public consciousness and people are flipping out because they have an emotional attachment to Pluto.
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  9. That's nonsense. Classification (=dividing things into categories) has always been part of science, because it makes it easier to have a discussion when everybody uses the same classification. When Galileo saw Jupiter and understood that it was a planet like ours, the solar system had two classes: anything in orbit around the Sun is a planet, anything in orbit around a planet is a moon. Then we started to discover asteroids, starting with the largest: Ceres. This was initially considered a planet. Then we discovered hundreds of smaller objects in similar orbits, and astronomers added a new class: asteroids. Ceres was moved from the Planet class to the Asteroid class. Then we discovered Pluto. Seemed to be alone in its region, so it was considered a planet. Then we discovered hundreds of smaller objects in similar orbits, and astronomers added a new class: dwarf planets. Pluto was moved from the Planet class to the Dwarf Planet class. The more objects you have, the more classes it becomes useful to divide them into. This is done everywhere in science. What most people call mosquitoes, biologists divide into several hundred species. Etc. In this case, a scientific classification has entered the public consciousness and people are flipping out because they have an emotional attachment to Pluto.
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  10. Astrology is nonsense. Consider this: your "sign" is based on the position of the sun relative to 12 constellations, 2200 years ago. That position isn't constant: it changes due to precession. These position have changed by more than 30º, meaning "your sign" no longer matches the position of the sun relative to the constellations. Astrologers blithely keep using the wrong signs. In addition, the stars exert no measurable influence on anyone.
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  11. Incorrect. Gravity alone accounts for the near-misses. Planetary magnetic fields are far too weak to deflect another planetary body. And most asteroids are not affected by magnetic fields because they don't contain magnetic materials.
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  12. That effect is tiny.
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  13. You're incorrect. The current model of the formation of the solar system has the planets moving around quite a bit. The channels you're recommending are all pseudoscience channels, they peddle ideas we already know are incorrect. The electric universe idea, for instance, has been disproven.
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  14. When you have 3 points of a planet's orbit, you can calculate its orbit. Depending on the accuracy of your data and the distance of the object, this can be done quickly: we've done this in less than a week for some of Saturn's moons. For Pluto, it took 1 year.
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  15. Classification (=dividing things into categories) has always been part of science, because it makes it easier to have a discussion when everybody uses the same classification. When Galileo saw Jupiter and understood that it was a planet like ours, the solar system had two classes: anything in orbit around the Sun is a planet, anything in orbit around a planet is a moon. Then we started to discover asteroids, starting with the largest: Ceres. This was initially considered a planet. Then we discovered hundreds of smaller objects in similar orbits, and astronomers added a new class: asteroids. Ceres was moved from the Planet class to the Asteroid class. Then we discovered Pluto. Seemed to be alone in its region, so it was considered a planet. Then we discovered hundreds of smaller objects in similar orbits, and astronomers added a new class: dwarf planets. Pluto was moved from the Planet class to the Dwarf Planet class. The more objects you have, the more classes it becomes useful to divide them into. This is done everywhere in science. What most people call mosquitoes, biologists divide into several hundred species. Etc. In this case, a scientific classification has entered the public consciousness and people are flipping out because they have an emotional attachment to Pluto.
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  16. The electric universe is a hypothesis not supported by mathematical models. Every experiment we did to test this hypothesis failed. So the hypothesis has been disproven: https://www.youtube.com/watch?v=T9q-v4lBGuw
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  17. The magnetic fields of the planets are not strong enough to do that.
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  18. Then Pluto wouldn't be the 9th planet, but the 10th. Ceres becomes a planet too under that definition.
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  19. That video is wrong.
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  20. No, they confirm Earth is a globe. Look at any of the planets through a telescope. You can see they are spheres. You can even see that Jupiter and Saturn rotate. You can see the 4 Galilean moons orbit Jupiter.
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