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261. Phil Plait's Bad Astronomy: Bad News
... What's New? Bad Astronomy . ... April 16, 1999 The Big News this week is that the intrepid astronomers Marcy, Butler and Fischer at San Francisco State University have found another set of extrasolar planets, but this time they have found three planets orbiting a single star. ... First, the astronomers did not discover another galaxy at all, but three planets around another star. ... A solar system is a star with planets orbiting it, a galaxy is a collection of billions or even trillions of stars. ...
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Ссылки http://www.badastronomy.com/bad/news/upsand.html -- 20.2 Кб -- 09.04.2016
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262. Phil Plait's Bad Astronomy: Bad News: A Twofer!
... What's New? Bad Astronomy . ... News . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Today we have two Bad News articles for the price of one (free, that is). ... The article in question is actually pretty good, talking rather humorously about several recent discoveries in astronomy. The problem is in the image caption along with the article: ``Within the newly discovered galaxy named DA15456 exists the largest planet ever found'' This is wrong for two reasons. ...
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Ссылки http://www.badastronomy.com/bad/news/twofer.html -- 19.4 Кб -- 09.04.2016
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263. Phil Plait's Bad Astronomy: Misconceptions: The Kessel Run
... Bad Astronomy . Misconceptions . ... Book Store . Bad Astro Store . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Every couple of weeks I get an email saying how the line about the Kessel run in Star Wars can actually be correct. ... For the Kessel run, the point I make on my web page is that when it was originally written, Lucas (or whoever) did not know that a parsec was a unit of distance, not time! ... 2008 Phil Plait. ... Check out my book "Bad Astronomy" . ...
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Ссылки http://www.badastronomy.com/bad/misc/kessel.html -- 19.5 Кб -- 09.04.2016
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264. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Bitesize Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... At what rate are photons collected when HST is viewing objects billions of light years away? ... Part of my job is to figure out exactly this number-- for an object of a given brightness, how many photons do we see in our camera aboard Hubble? ... Even over the area of Hubble's 2.4 meter mirror, only a handful of photons are counted every second. ... 2008 Phil...
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Ссылки http://www.badastronomy.com/mad/1997/photon.html -- 19.9 Кб -- 09.04.2016
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265. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... If his wheels are rotating fast enough to cause the car to be going sixty miles per hour, even though the semi may only be going one mph slower, as soon as the car hits the ramp, the ramp becomes the road and is moving at zero mph relative to the car. ... However, that same piece of tire will be moving pretty quickly relative to a ramp moving at the same speed as the car. ... From the ramp's point of view, the car is moving very slowly. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1997/knight.html -- 22.4 Кб -- 09.04.2016
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266. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Bitesize Astronomy . ... Mad Science . ... Site Info . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. Hey, it's either this or one of those really irritating PayPal donation buttons here. ... Area of science: Astronomy . ... How big is the comet hale-bopp's tail? ... Pictures of Hale-Bopp show the two tails really well. I really recommend the site linked above, since it has lots of pictures and info about the comet. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1997/hbtail.html -- 19.2 Кб -- 09.04.2016
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267. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Area of science: Astronomy . ... When all of the sudden this small round amber light appeared in the sky from about a 45% angle directly in front and a little off center. ... It was very bright! ... It sounds like you were lucky enough to see a very bright meteor burning up in the atmosphere. ... I have some info about meteors on my web page, too, called Bad Astronomy . ... 2008 Phil Plait...
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Ссылки http://www.badastronomy.com/mad/1997/bolide.html -- 21.3 Кб -- 09.04.2016
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268. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... The name "parsec" is indeed a distance of 3.26 light years. ... First off, we need to know about "parallax". ... A great example is easy to show: hold a thumb up in front of your face, about 20 centimeters away. ... That angle is called the parallax angle, and it depends on two things: how far apart your eyes are (the baseline ), and how far away your thumb is. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1996/parsec.html -- 21.2 Кб -- 09.04.2016
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269. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... The Nine Planets . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Does the discovery of dark matter account for the missing light? ... Now, when I look at your question, I think you may be confusing Olbers' paradox with another issue, called the Missing Mass problem. ... In other words, most (perhaps as much as 90%) of the mass of the cluster must be dark-- matter that literally did not emit light. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1996/olbers.html -- 21.4 Кб -- 09.04.2016
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270. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... Site Info . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... What is a magnet made of? ... Everything in the world that you can touch is made up of little tiny building blocks called atoms . ... Every atom naturally has a little bit of electric charge. That means that every atom can be a magnet! ... So you only get a big magnet when all the little magnets -- the atoms -- pull in the same direction. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1996/magnet.html -- 19.1 Кб -- 09.04.2016
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271. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Area of science: Astronomy . ... How big can a comet be in size? ... Have you found a new star? How close can you get to a star with out getting hurt? ... Questions like "How big can something get..." usually run into trouble simply because of definitions. ... So comets may get pretty big, but our definition of just what is a comet may break down before then! ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1996/comets.html -- 23.5 Кб -- 09.04.2016
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272. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . Misconceptions . ... Bad Astronomy : The zodiac contains 12 constellations. ... A couple of things not noted at that site: if Ophiuchus occupies more of the ecliptic than Scorpius, why is it not in the astrological zodiac instead of Scorpius? Most likely, it's because Ophiuchus is not a particularly bright constellation, while Scorpius is a very bright, vivid group of stars that really does look like a scorpion. ... Also, the goat is Capricornus , not Capricorn . ...
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Ссылки http://www.badastronomy.com/bad/misc/zodiac.html -- 21.7 Кб -- 09.04.2016
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273. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . Misconceptions . ... Site Info . ... Take the case of a pair of binoculars advertised in an L. L. Bean catalog. ... Waterproof, shockproof binoculars that let you see up to 100 yards away (emphasis mine). ... On a clear night, though, you can see pretty far away . Even the binoculars advertised will let you see objects roughly ten million light years away (if you're at a dark site). But what's a factor of 1,000,000,000,000,000,000,000 to an advertiser? 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/bad/misc/binocs.html -- 18.8 Кб -- 09.04.2016
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274. Phil Plait's Bad Astronomy: Bad TV
... Bad Astronomy . ... As the Moon retreats, the tides- caused by its pull on the Earth, and which slow the Earth's rotation by friction- are getting smaller. ... A few hundred million years ago, the Moon was much closer, the Earth's orbit was much slower, and time has a way of adding up. ... When the Moon formed close to the Earth, tides were enormous. ... Bad: A few hundred million years ago, the Moon was much closer, the Earth's orbit was much slower, and time has a way of adding up. ...
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Ссылки http://www.badastronomy.com/bad/tv/wildside.html -- 27.3 Кб -- 09.04.2016
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275. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Mad Science . ... The color of light is determined by the wavelength: the long wavelengths make red light, somewhat shorter makes yellow, shorter even than that makes blue. ... The red light gets reflected by the shirt and into your eye. ... A perfect mirror does actually reflect all light hitting it. ... A mirror, on the other hand, reflects the blue and red light in the same direction, and so the mirror actually builds an image of the source of the light. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1996/mirror.html -- 20.1 Кб -- 09.04.2016
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276. Phil Plait's Bad Astronomy: Mad Science
... Bad Astronomy . ... Bitesize Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Although seen here on Earth, aurorae start at the center of the solar system. ... After about three days those particles get near the Earth and hit the Earth's magnetic field. ... Now these particles are moving very fast, and when they hit the air they slam into air atoms that make up our atmosphere, sometimes knocking loose more electrons. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/mad/1996/aurora.html -- 19.8 Кб -- 09.04.2016
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277. Phil Plait's Bad Astronomy: Bad TV
... Bad Astronomy . ... Movies . ... Hey, it's either this or one of those really irritating PayPal donation buttons here. If you believe your TV (and who doesn't), then you know there are billions of asteroids roaming around the solar system, all waiting for their chance to impact the Earth and wipe out human civilization. ... However, NBC decided to make a fictional account of an asteroid strike in their awful, awful made-for-TV movie "Asteroid" , which I cannot say enough bad things about. ...
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Ссылки http://www.badastronomy.com/bad/tv/doomsday.html -- 35.2 Кб -- 09.04.2016
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278. Phil Plait's Bad Astronomy: Bad TV
... NBC's made-for-TV movie "Asteroid" came and went in February (1997), and, as predicted in my Bad News page, it had precious little accuracy in it. ... Incidentally, I don't expect this list will ever be used to help the accuracy of any future movies, but like all my pages, I simply hope it will help inform people about what is Good Astronomy, and what ain't. "Asteroid" ain't. To be fair, they did get some things right. ... Bad: In the opening shot, we see a comet cruising through the asteroid belt. ...
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Ссылки http://www.badastronomy.com/bad/tv/asteroid.html -- 36.2 Кб -- 09.04.2016
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279. Phil Plait's Bad Astronomy: Misconceptions
... Bad Astronomy . Misconceptions . ... In general, withholding Hubble Space Telescope data is a bad thing. ... The idea that withholding Hubble Space Telescope (HST) data is bad is not something I have heard about in the media, but does seem to have some internet staying power. ... People simply being curious as to why HST data are withheld from public view for a year, . ... There is only so much time HST can spend collecting data in a year, and so the available time on the 'scope is quite limited. ...
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Ссылки http://www.badastronomy.com/bad/misc/badhst.html -- 31.9 Кб -- 09.04.2016
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280. Phil Plait's Bad Astronomy: Misconceptions: Bart Sibrel, Moon Hoax Advocate
... Bad Astronomy . Misconceptions . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Note: I am assuming that before reading this page you are familiar with the idea that some people think NASA faked the Apollo Moon missions. If this idea is new to you, try reading my page with links to other pages about the Moon hoax , and my page debunking specific claims of this hoax "theory" . One of the more active proponents of this silliness is one Bart Winfield Sibrel. ...
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Ссылки http://www.badastronomy.com/bad/misc/sibrel.html -- 25.2 Кб -- 09.04.2016
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