Lunar meteorite identification pictures
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Mixed in with all of that microscopic matter would be some larger bits, and the larger the size, the fewer samples there'd be, with ones that get up over a metre in size being quite rare.Ī primer on meteoroids, meteors and meteorites. If we were able to capture a day's worth of accumulated meteoroids, before they flashed through the sky, we would find that most are microscopic dust grains and ice crystals. In between these events, though, it doesn't seem like much happens.īased on careful surveys, it is now estimated that, on any particular day, anywhere from 5 to 300 metric tons of cosmic rock and ice (aka meteoroids) plunge into Earth's atmosphere, all travelling at anywhere from 40,000 to 256,000 kilometres per hour when they hit the top of the atmosphere.
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Credit: Aleksandr Ivanov/Wikimedia Commons (CC BY 3.0) The dawn sky over Chelyabinsk, Russia was lit up like full daylight on February 15, 2013, as this massive asteroid plunged into the atmosphere. Occasionally, there's an exceptionally bright meteor that flashes through our sky, and perhaps once a century, we witness something much bigger - such as the object that exploded over Chelyabinsk, Russia in February 2013. We have a few prominent meteor showers each year, as well as several minor ones that may or may not be noticed, depending on the phase of the Moon and the local light pollution. In general, the relationship between Earth and Space appears fairly tranquil. Some meteorites are even from Mars or the Moon! Most meteorites contain some of the earliest minerals to form in our solar system, over 4.5 billion years ago There are three basic kinds of meteorites - iron, stony, and stony-iron Larger meteoroids produce a bright fireball, or can even explode as a bolideĪny piece of a meteoroid or asteroid that hits the ground is called a meteorite When a meteoroid enters the atmosphere, it produces a streak of light across the sky, called a meteor Rocks in space are known meteoroids (larger ones are usually called asteroids) Here's your guide to meteorites, and everything you need to know to identify them. The most efficient thing is to send in photos if a specimen looks like it might be a meteorite, we might then ask the finder to bring it in for closer examination.A blaze of light flashed through the early morning darkness on Wednesday, July 24, flaring so brightly that, for just a few moments, night became like day.įinding the object behind this brilliant display could reveal answers to mysteries about the birth of our solar system, or could provide us with even deeper questions to be answered. We are unlikely to return phone calls asking for meteorite identifications because we simply cannot identify rock specimens over the phone. If you don't hear from us, and you are eager to sell your specimen, contact one of many meteorite dealers you can find on-line.We must meet these deadlines to fulfill our primary missions of teaching and research.) (We can’t guarantee a response, since each of us has a never-ending series of deadlines related to teaching, research, and grants. E-mail 1 to 3 of your best photos to These photos will be sent out to the faculty, post-doctoral researchers, and graduate students in the hope that one of them will have the time to respond.It is hard to identify samples from photos alone, so it is crucial that the photos be sharp and with natural colors! Take a couple of well-lit (indirect natural light is best), sharply focused, high resolution photos.At Pitt, only one person in 40 years has ever brought in something that turned out to be a meteorite, and this person was a geologist. Keep in mind that you most likely do not.In particular, check out his " meteorwrongs" pages, for one of these not-meteorites is likely what you've got. Randy Korotev at Washington University in St Louis). To see if you have a meteorite, please first visit Identifying Meteorites written by meteorite expert Dr. Both iron-rich slag and iron ore can attract a magnet, which unfortunately is also a common test for meteorites. In the Pittsburgh region, most finds are either slag from old blast furnaces, pieces of iron ore, or other artifacts of the regional metals industry. Nearly 100% of all finds brought in by the public turn out to not be meteorites.