Today Phil helps keep you from ticking off an astronomer in your life by making sure you know the difference between a meteor, meteorite, and meteoroid. When the Earth plows through the stream emitted by a comet we get a meteor shower. Meteors burn up about 100 km above the Earth, but some survive to hit the ground. Most of these meteorites are rocky, some are metallic, and a few are a mix of the two. Very big meteorites can be a very big problem, but there are plans in the works to prevent us from going the way of the dinosaurs.
Aerolite Meteorites, Inc.: http://www.aerolite.org/
Big Kahuna Meteorites: http://bigkahuna-meteorites.com/
Arizona Skies Meteorites: http://www.arizonaskiesmeteorites.com/
Table of Contents
What Meteors Are 0:59
Meteor Shower 4:22
What Meteors Are Made Of 7:10
Very Big Meteorites Can Be a Very Big Problem 8:36
PBS Digital Studios: http://youtube.com/pbsdigitalstudios
Follow Phil on Twitter: https://twitter.com/badastronomer
Want to find Crash Course elsewhere on the internet?
Facebook – http://www.facebook.com/YouTubeCrashCourse
Twitter – http://www.twitter.com/TheCrashCourse
Tumblr – http://thecrashcourse.tumblr.com
Support CrashCourse on Patreon: http://www.patreon.com/crashcourse
Shooting star http://dakotalapse.com/wp-content/uploads/2013/02/IMG_5555-reboot1.jpg [credit: Randy Halverson / Dakotalapse.com]
Cosmic Fireball Falling Over ALMA http://www.eso.org/public/usa/images/potw1414a/ [credit: ESO / Christoph Malin]
Meteor light https://sphotos-b.xx.fbcdn.net/hphotos-ash3/704204_406950402710734_1157020008_o.jpg [credit: Randy Halverson / Dakotalapse.com]
Bolide 10/16/14 https://www.youtube.com/watch?v=GZXqmPhd8AQ [credit: reddit user -545-]
Meteor Video http://svs.gsfc.nasa.gov/vis/a010000/a010700/a010747/10747_Swift_Asteroid_H264_Good_1280x720_29.97.mov [credit: NASA/Goddard Space Flight Center]
Orbit Video http://svs.gsfc.nasa.gov/vis/a000000/a004100/a004159/209PLINEAR-swingAround.slate.HD1080.mp4 [credit: NASA’s Scientific Visualization Studio]
When Gemini Sends Stars to Paranal http://twanight.org/newTWAN/photos.asp?ID=3003955 [credit: Stephane Guisard]
Perseid below space station http://apod.nasa.gov/apod/image/1208/iss028e024847perseid.jpg [credit: NASA]
Geminids shower http://www.slate.com/blogs/bad_astronomy/2014/12/15/geminids_meteor_shower_photo.html [credit: Neil Zeller]
Cygnus Reentry http://www.slate.com/blogs/bad_astronomy/2014/08/18/fireball_astronauts_photograph_cygnus_resupply_ship_burning_up.html [credit: ESA/NASA]
Stony meteorite http://en.wikipedia.org/wiki/File:AllendeMeteorite.jpg [credit: Wikimedia Commons, H. Raab]
Iron meteorite http://commons.wikimedia.org/wiki/File:Nickel-iron_meteorite_fragment,_5.5_billion_years_old,_found_near_Flagstaff_AZ_-_Franklin_Institute_-_DSC06707.JPG [credit: Wikimedia Commons, Daderot]
Stony iron meteorite http://en.wikipedia.org/wiki/Pallasite#/media/File:Bernham_meteorite_sept_2010.JPG [credit: Wikimedia Commons, Supportstorm]
Chondrites http://commons.wikimedia.org/wiki/File:Allende_meteorite,_carbonaceous_chondrite_(14787764392).jpg [credit: Wikimedia Commons, James St. John]
Pallasite https://www.flickr.com/photos/jsjgeology/14608975850/ [credit: James St. John]
Aftermath of Chelyabinsk Meteor https://www.youtube.com/watch?v=Q9KwK0izt5c [credit: NASA]
Near-Earth asteroid 2013 https://www.youtube.com/watch?v=RmPsQdEHyPU [credit: Gianluca Masi, permission granted by author]
Dinosaur drawing courtesy of Zach Weiner of Saturday Morning Breakfast Cereal http://www.smbc-comics.com/?id=1535
There's an even better way to piss off astronomers:
"hey, can you do a horoscope for me?"
hay whats your sign
Make a episode about astrophotography!
none of the previous videos had so vast amount of information that's totally alien to me!!
Every time I See a shooting star I think of darker than black.
click on this 2:02 an you'll see how hilarious this is. XD
"Crash probes into meteors"… Do meteors sometimes not change their orbit, but change their angle when they get hit? Also breaking up a huge one can make a meteor shower, sort of. Except they will burn out.
Sam bot…. John green
If a big meteor happens every century or so, then hasn't humanity already survived dozens of them?
yo no se.
Oh my gosh Phil, you're such a Libra!
Hey Phil, great episode! I just had one question to ask..
What's your sign ?
I saw a bolide meteor during the day time, I was at a campsite somewhere in South Africa and it passed over the horizon, I remember the front part being bright white with an orange tail (which I thought was fire) streaking out behind it. It left after images in my eye once it was gone. I'd love to see one again some time…
These are great micro lessons. For people that like to learn about science in general.
MST3K reference identified.
– So, you collect rocks?
– Jesus Marie, they are meteorites!
You get a like just for the MST3K reference alone ;-)
in Creole please.
really sick of astronomy and astrology being pitted against each other, if only each side actually took the time to do some research into the other…
I recently saw a shooting star in Spain. It was very bright, and so impressive.
Me and some of my buddies took a bunch of blankets, and sat out on peninsula on my lake for last years Geminids. Tea to keep us warm, and hundreds of shooting stars. I stargaze every night, but it was truly inspiring, because some of my friend nods had never seen a shooting star before, and they were Boy Scouts. XD
Lol hauling mass. Phil you slay me
I saw a 'shooting star' years ago while I stood outside my house. It was awesome.
Space Programme built on the work of Wernher von Braun. Who built the V2 a result of Germany starting WWII. So when we are saved from asteroid impact, don't forget to thank Adolf Hitler.
Could a big enough meteorite kill off fish and other sea lifeforms that we depend on if it happens to hit somewhere in the great ocean?
The shock-wave i reckon would be devastating even under water.
This video brightened my day. Get it? brighten. …. I find my own way out. :c