259

The metric does not measure what it is claimed it does, and even if it did it would be meaningless for assessing the role of Dr. Kate Bouman in creating the image. I'll go on to why, but I first want to draw particularly attention to the fact that Dr. Bouman has explicitly rejected the idea that she deserves sole credit: But Dr Bouman, now an assistant ...


132

Technically, that is the percentage of the code she contributed, 2410 lines in 90 commits. From https://github.com/achael/eht-imaging/graphs/contributors But that tells us nothing about what the code does. Andrew Chael, the man who is credited with doing the work in that article, has spoken up against the rhetoric used against her. From https://www....


120

Is Neil Tyson's claim that the Gregorian calendar is the “most accurate calendar ever devised” true? TL; DR: The Gregorian calendar qualifies as "most accurate" if one defines "most accurate" as a calendar that has a leap year every four years except for years that are divisible by 100 but not by 400. Tyson didn't mean that. He made it somewhat clear what ...


86

There are many reasons why this is wrong. The first one is the assumption of 1 supernova per 25 years. That was the value arrived at in Gustav Tammann's article published in 1970. Others got values up to 100 years (Tammann himself changed his value later). All these values are really only good guesses. Worse errors are made in the percentage of remnants ...


57

Their claim is incorrect. On an astronomical scale, one kilometer is a very small value. In fact, Earth's orbit regularly varies by far more than 1km. According to the NASA's Solar System Exploration website's facts and figures, Perihelion (closest) Metric: 147,098,291 km Imperial: 91,402,640 miles Scientific Notation: 1.47098 x 108 km (0....


54

The International Astronomical Union acts as the internationally recognized authority for assigning designations to celestial bodies (stars, planets, asteroids, etc.) and any surface features on them. and they say: The IAU frequently receives requests from individuals who want to buy stars or name stars after other persons. Some commercial enterprises ...


49

Yes, there was a famous narrowband signal detected in 1977, which became known as the "Wow! signal". Whether it came from outer space is unknown. The original astronomer wrote a 30th Anniversary Report on the signal in 2007, which covers a lot of the technical details. Wikipedia adequately covers the topic. Brian Dunning of the Skeptoid Podcast examined ...


49

False. That little outfit called NASA says this: The Persian Calendar, also known as the Iranian Calendar, is made available in a similar fashion for it is the most accurate of calendars. These calendars are included for the millions of people who use them regularly. But this is quite complicated, as the term "accuracy" for a calendar might mean quite ...


46

The Goldilocks zone ("Circumstellar habitable zone") is a real thing: In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, colloquially known as the Goldilocks zone, is the region around a star within which planetary-mass objects with sufficient atmospheric pressure can support liquid water at their ...


41

Is there any evidence other than this to back it up? A Gallup poll in 1999 found that 18% of Americans thought the Sun revolves around the earth. So there is support for the notion that substantial numbers of people in the US hold this belief. A 2005 EU survey is reported as finding that a higher percentage of Europeans held the same view. The sample ...


39

The old title asked "Did researcher Katie Bouman only contribute 0.26% of code that created Black Hole image," and the existing answers do a good job explaining why it isn't true and why lines of code aren't a useful metric. The new title, however, asks "Was credit for the black hole image misappropriated?" and the correct answer should appear rather ...


38

This image is software generated, according to its Wikimedia page: Own work, created with "Full Sky Observatory" Source bitmap for projection from Nasa's Clementine Spacecraft You can see some pixelization happening at the very bottom and top of the moon. Another dead giveaway is the fact that the moon in the image is full for the entire month, ...


36

Well, the answer is that: Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space. -Douglas Adams, Hitchiker's Guide to the Galaxy Nothing else is visible in the frame simply because the angle of the image is too narrow to ...


32

Data Estimated number of eukaryotic (human) cells in the human body: 1.0×1014 —Wolfram Alpha The haploid human genome (23 chromosomes) is estimated to be about 3.2 billion base pairs long. —Human Genome – Wikipedia The full DNA content of a cell is therefore 6.4 Gbp. Average base pair size: one bp corresponds to approximately 3....


30

People have stepped on the Moon when they went there and left footprints, so we've plenty of photographic evidence of their footsteps on the Moon. In fact, it turns out that people do leave footprint in dust, even if they weigh less, like a child leaves footprints on Earth while weighing as much as a man on the Moon. Pictures taken from the Moon itself The ...


23

As is typical of "Answers in Genesis" they don't seem to even have a basic understanding of what they are talking about. They are confusing how gases normally behave in common experience (i.e. on scales of human experience). When dealing with a nebula, we are talking structures that expand for light years in all directions... Read that again: light year*...


22

This is known as the Giant Impact Hypothesis or the "Big Splash". As remarkable as it sounds, it is actually is the scientific consensus of how the moon was formed. The Moon is generally believed to have formed from debris ejected by a large off-centre collision with the early Earth. A letter to Nature magazine, August 2001. More evidence for this ...


22

Nearly True This works, but there is one detail missing, and depending on your latitude the picture could be misleading. The sun moves approximately one finger width across the sky each 15 minutes, but the sun does not necessarily set vertically down onto the horizon. You have to use your hand to measure the distance the sun has to travel along it's path, ...


22

It's a fair statement to make, even if not true (and especially not when taken out of context). From the context it's apparent that he meant predictive calendars in widespread use. Also one can imply that fairly simple rules can be qualification needed for everyday use. I think it's obvious that with today's knowledge of mathematics and physics even the ...


20

The current night sky as seen from Nairobi, Kenya (1°17′ south latitude) and from Darwin, Australia (12°27′ south latitude) are shown below. Nairobi, Kenya night sky: Darwin, Australia night sky: Sources: https://www.fourmilab.ch/cgi-bin/Yoursky Nairobi, Kenya is just south of the equator, so at the right time of the year (this is the right time of the ...


18

The first and second panels bear streaks that look like what has been tentatively described as ejecta from 'sand geysers'. These may occur when subsurface solid carbon dioxide (dry ice) deposits sublime, resulting in outgassing that blows dust into the air. See for instance this image from the wiki article, originally published by Piqueux et al. in the ...


18

This appears to be a myth that has been repeated in the media. White it is true that whale and sperm oil have been used historically as lubricants, modern synthetic replacements exist from a variety of manufactures to include the Nye Lubricants that is mentioned in various articles as being a provider to NASA of lubricants. At least three articles have ...


16

Evan Harper gave a great answer, but I'll supply an alternative one from the astronomy angle. Trans-pluto isn't an astronomical term. The closest is "Trans-Neptunian object", which is any object orbiting outside Neptune (Pluto is one, by the way). By extension you could say that a "Trans-plutonian object" orbited outside of Pluto, but it's not a normally ...


16

This appears to be a metastasization of a hoary old myth originating with the anthropologist Marcel Griaule. The original claim was that the Dogon cosmology included information about the Sirius star system not obtainable without advanced technology. In fact, it is not clear that they had this knowledge – Griaule seems to have severely over-intepreted ...


15

Basically, Tyson's claim is roughly true considering that more accurate alternatives in actual use are either: observation-based, i.e. tweak the calendar at is goes (current Persian i.e. Solar Hijri calendar), or purely predictive, but diverge from the Gregorian one well in the future: Milanković's (="revised Julian') diverges in the year 2800 (making it ...


14

The relevant paper seems to be "Cinzano, P., Falchi, F., Elvidge C.D.  2001, The first world atlas of the artificial night sky brightness". It gives numerical data per country and as of excellent observation conditions Australia is in the list of many other countries who are also pretty good. In table 1 they give numbers of how many percent of the ...


14

The article in question has the correct answer: Any NEO that is going to hit the Earth will swing near our planet many times before it hits, and it should be discovered by comprehensive sky searches like Spaceguard. There are many all-sky survey projects that would likely detect any civilization-damaging asteroid. And if the survey projects detect such ...


14

No, that isn't exactly what Stephen Hawking said. What Hawking did was propose an explanation to one of the most puzzling problems in theoretical physics. How can black holes exist when they seem to break two fundamental laws of physics?1: Laws of Relativity Quantum Mechanics PBS explains: Last week, famed physicist Stephen Hawking made headlines with ...


13

To add to @DavePhD's answer, there are differences with the quotes from Quora according to the Internet Sacred Text Archive (ISTA) which hold translations by Ralph T.H. Griffith Shape of Earth is like an Oblate Spheroid — (Rig Veda XXX.IV.V). There are only 10 books in Rig Veda so Rig Veda XXX (30) cannot be found. The sun has tied Earth and other ...


13

Likely close to that much, yes. We don't know the precise amounts of these trace precious metals in Psyche, merely that the main constituents are nickel and iron. Our understanding of the amounts of gold and platinum in asteroids derive largely from studying meteorites, which should be representative of asteroid compositions. Given those assumptions, Psyche ...


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