Introduction to Astronomy: Crash Course Astronomy #1

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Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: "What is astronomy?"
Table of Contents:
What is Astronomy? 3:00
Who Studies Astronomy? 3:50
Origins & Developments 6:52
PBS Digital Studios: ruvid.net/u-pbsdigitalstudios
Follow Phil on Twitter: twitter.com/badastronomer
Want to find Crash Course elsewhere on the internet?
Facebook - facebook.com/RUvidCrashCourse
Twitter - twitter.com/TheCrashCourse
Tumblr - thecrashcourse.tumblr.com
Support CrashCourse on Patreon at www.patreon.com/crashcourse

Published on


Jan 15, 2015




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Comments 3 708
Lyu Alex
Lyu Alex 2 days ago
Kly x
Kly x 9 days ago
I started crying in the end I don't know why, but it's so touching I love knowledge, I love science I love learning about new things and the world It's just so fascinating😭
Laurynas 7 days ago
It's ok to 😢
H_curly 10 days ago
I'm writing a short science fiction story that heavily relies on constellations and space travel.
alyssa 13 days ago
i will be an astronomer when i’m older. speaking it into existence
Aprender Idiomas y Cultura General con Rodrigo
I like the pace of your speech. New subscriber. Thanks!
good job!!!!
Hamzah Elhafdaoui
Hamzah Elhafdaoui 15 days ago
the fault in our stars reference
Sci-Fi Facts
Sci-Fi Facts 15 days ago
What is astrophysics?
Slash of the Greatness
Sci-Fi Facts Understanding of math and physics, of space.
Sit Still And Breathe
This is freakin' AWESOME. I love science. Science is what illuminates light (aka knowledge) though out the darkness (aka ignorance/the unknown). Hail science! Love how people deliberately dislike this video.
D. M. Collins
D. M. Collins 20 days ago
I was going to comment "how many of these discoveries will be disproved now that it's five years later," but then you STARTED by covering that! Well played.
ᕱ⑅ᕱ 20 days ago
Looking up the night sky always relieves my stress when i think that i’m just a speck of dust and my problems doesn’t really matter....ironic... I love watching astronomical phenomena more than anything...i saw a meteor 01/2020 which was unforgettable....i want to see solar/lunar eclipses, northern lights, comets...etc...
Mr Smiley
Mr Smiley 22 hours ago
Same man
Zylox Dragon
Zylox Dragon 22 days ago
But... the world is flat! I seen videos!
Regina V
Regina V 25 days ago
anyone else just here for fun? lol
Yerimssi 26 days ago
I have a dream to be an astronomer
Anakin Moonwalker
Anakin Moonwalker 29 days ago
I have a rhetorical boner for this channel. History was great, Politics pretty good and this stuff already got me hooked... Good job!
Galaxy SQ
Galaxy SQ 29 days ago
Uhhh I think I’m late😂
GD IzzyConfusing
Kepler’s idea was to inscribe a sphere, inside of an octahedron, circumscribed a sphere around that, then placed the whole thing inside an icosahedron, threw in an other sphere, wrapped the entire thing in a dodecahedron, threw in an other sphere, place the thing in a tetrahedron, then threw in an other sphere, and placed the whole thing in a cube, threw in an other sphere and yet, you’d have six spheres.
sophie blazquez
sophie blazquez Month ago
Geology alert : Becarfull we now know the earth is not mostly molten. The outter core is the only molten part of the earth. The rest of it is solid, the mantle should be represented in green (it evokes peridotite) and not in red (which evokes lavae). Great video :)
I love both science and engineering Everybody says Physics is hard physics sucks But physics is everything for me And engineering is also my love But I can't decide my career Please god let me choose a job i will be happy with
MAW 17 days ago
Same problem iam facing today
Yuki's Roblox
Yuki's Roblox Month ago
Our whole universe was in a hot dense state when nearly 14 billion years ago expansion started. Wait. The earth began to cool arthropods began to drool Neanderthals developed tools We built a wall We build the pyramids Math science history Unraveling the mystery It all start with a Big Bang HEY
Laura Chapple
Laura Chapple Month ago
This may be weird, but I *love* the brief opening animation and theme song for this series. It communicates the wonder and joy of astronomy so succinctly.
Hasfast Month ago
You can't start a video saying that it's essential to understand that what we think we know about the universe might be wrong, then write off Astrology as a non-science without doing proper testing yourself. Implement scientific observation to the knowledge on this subject, actively apply it in your life for a prolonged period of time, then extract an actual conclusion from the experience independent from anything you might have read or think you understand about it. I guarantee you'll find consistencies between it and literally every other form of knowledge in the world. The fault in your statement lies in your approach, not in Astrology.
Gavesh Lakshan
Gavesh Lakshan Month ago
Skyett Month ago
Phil is literally part of the reason why Hubble is successful
Aka_ ReaPer
Aka_ ReaPer Month ago
My astronomy teacher sent me here
blue diamond
blue diamond Month ago
it made me happy when you said we are astronomers , :D ,thumbs up.
1GirlOnFire1 Month ago
I’m 17 and I’m taking an astronomy class at a junior college this semester and I’m so scared 😭 it’s basically quantum physics of space
Amaya Grace
Amaya Grace Month ago
I’m taking a college course in astronomy starting tomorrow and I’m terrified lol pray for me please
nana leslie
nana leslie Month ago
Did you know that astronomy 🪐 is the best things ever? Also I think that we all need to learn more math. Because that always helps with astronomy 🔭
nana leslie
nana leslie Month ago
I love astronomy 🔭 I❤️❤️ this is a perfect show for me! Thank you so much!!!🚀🛸⭐️🛰
daniel craig
daniel craig 2 months ago
Many thanks, I been tryin to find out about "is there a lot of math in astronomy?" for a while now, and I think this has helped. Have you heard people talk about - Qanailey Riyhloe Domination - (do a search on google ) ? Ive heard some great things about it and my brother in law got amazing results with it.
VirTual 2 months ago
Just wonderful, I been tryin to find out about "astronomy stories" for a while now, and I think this has helped. Have you ever come across - Qanailey Riyhloe Domination - (search on google ) ? Ive heard some unbelievable things about it and my mate got amazing results with it.
Gilberto jose
Gilberto jose 2 months ago
Cheers for this, been searching for "astronomy questions" for a while now, and I think this has helped. You ever tried - Qanailey Riyhloe Domination - (Have a quick look on google cant remember the place now ) ? Ive heard some awesome things about it and my m8 got excellent success with it.
No Hombre
No Hombre 2 months ago
Me: r/whoosh
George Aziz
George Aziz 2 months ago
hopefully the big bang isn't in this series because it sounds like nonsense to me
SPACE SL 2 months ago
furguts 2 months ago
id love to hear jacksfilms voice over
Loki Vato
Loki Vato 2 months ago
The evolutionist slant is lovely
Edward Palafox
Edward Palafox 2 months ago
I love experiencing existential crises.
Ewhite2208 2 months ago
Loved your delivery on this. Great energy!
favkrite. 2 months ago
I’m a 5th grader, what is geology, hydrology, and petrology?
Tuts 2 months ago
Hi young man! So, basicaly geology is the study of stones, the Earth and the minerals that are in it. Hydrology is the study of water! It comes from the greek "Hydro" that means water. And petrology , is a part of geology, but focused on the evolution of stones and how they are made!
Riko Saikawa
Riko Saikawa 2 months ago
Guided tour of what we can’t ever see
otti green
otti green 2 months ago
Amazing video, could anybody explain the difference between Brahe's solar model and Kepler's solar model?
sammie tee
sammie tee 2 months ago
people may doubt on me but imma really pursue this dream :))
James Madduma
James Madduma 2 months ago
Those likes are far from space
Melissa 2 months ago
What programming language did you use to build and calibrate the camera that was installed onto the Hubble?
Righte Mareon
Righte Mareon 2 months ago
4:15 cool🤩
galleon30000 2 months ago
The age of the moon is 6.2 billion years old and is also hollow. The moon’s origin was originally in a constellation of Ursa Minor, that’s in the Little Dipper. It came from the solar system called Chowta. This solar system has 21 planets in it of which our moon came from the 17th planet and was one of four moons that were circling that particular planet../The moon was purposely put into the tail of a planetary asteroid, which brought it across our galaxy to Earth. This was over 11,000 years ago. It did not calm from the Earth as many surmise, because the Moon is in fact older than our planet.
Mhd Phy
Mhd Phy 2 months ago
بسم لله الرحمن الرحيم له ملك سموات و الارض و لله على كل شيء شهيد صدق لله. العظيم. قال لله تعالى حبيبي يولج الليل في النهار و يولج النهار في الليل في النهار للهم صل على حبيبنا محمد كما صليت على حبيبنا ابراهيم. و على الرسل اجمعين. عمري و عشقي لله
Nathan Kamau Ngigi
Nathan Kamau Ngigi 3 months ago
Which is...?
Barry Deeks
Barry Deeks 3 months ago
end sex crime vilify me
You are great
Chandler Muriel Bing
3 minutes in and this dude is freaking me out
brnadig394 3 months ago
Crash course archeology please! And geology!
Xavier Pierce
Xavier Pierce 3 months ago
You guys really have no clue what you all are talking about
Rob Fowler
Rob Fowler 3 months ago
I love this series. I think its excellent. I just wish you had dedicated at least one video to astronomy. You know, taking a telescope out into a dark night and teaching us what to look for and how to find it. This is more about astrophysics and cosmology than it is about astronomy.
WILLIAM BLAIR 3 months ago
It could have been a great video. Denigrating people, even ancient people, ( 5:30 ), as just one example, is needless, and crass. He goes on to bash astrology, and other things. Why? It's not what you say, but the narcissism and vitriolic delivery that ruined what could have been a perfect video about astronomy.
The Sun Is A Planet
The Sun Is A Planet 3 months ago
Every time the light goes around the earth I get 1% smarter
MMD rmt
MMD rmt 3 months ago
please add Persian subtitle
Anshuman Chettri
Anshuman Chettri 3 months ago
I have an extempore speech competition based on astronomy anddddd well here I am
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