General Astronomy: Lecture 1 - Introduction
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- čas přidán 31. 05. 2017
- List of referenced videos:
Interactive Scale: htwins.net/scale2/
Video 1: The Scale of the Universe - • How Big Is The Universe?
Video 2: Asteroid Discovery - • Asteroid Discovery - 1...
Video 3: The Most Astounding Fact - • The Most Astounding Fa...
Video 4: Understanding Simulated Universes - • Understanding Simulate...
Video 5: Why is the Milk Gone? - • Why is the Milk Gone?
Video 6: Pale Blue Dot - • Pale Blue Dot - You Ar...
I am a new astronomer and just found this series. Thank you so much for the time and effort put into making these, I cannot wait to finish them all.
You explained everything so well!!! Peaceful to listen to, thanks so much! Can’t wait to watch your other vids. :)
im not even halfway through this lecture and im already so excited !!! like... ive read books about astronomy, but nothing like hearing other people talk about it!! so happy and grateful you shared this with us !!
Thank you so much for uploading these for the public. This is exactly what I was looking for!
Absolutely incredible lecture, Astronomy has always interested me and not only has this helped me prep, study and give an easy and digestible refresher, but set me up to explain it to others. You have a very personal way of explanation and is perfect to listen too before I go to bed or when I’m on the bus. Thank you so much!
Though this is for your class, I love that you have made this information public. I am always wanting to learn, and have a limited knowledge of astronomy. And since I want to write Science Fiction, this helps me greatly to have a nice base to learn more.
I was really curious about the course and decided to CZcams it and YOU came up. I'm a student at SOSU and am so excited that you take the time to make these videos. I look forward to attending your class in March! Thanks again.
I know it's been a while since this was uploaded but I was stuck not knowing what classes to take going back to college. And this has been helpful in helping me choose what I want to do!!
I loved this and will definitely watch the whole series! Thank you for uploading these ❤️
This was great! I was having trouble in my beginning Astronomy class as to him not explaining things well! So this is a breath of fresh air! thank you
This is just really awesome. I've been looking up at the stars lately, and decided it was time to learn about the universe. This blew me away. You have awakened a nation in me that I will purse for the rest of life. Thank you.
I will be taking Astronomy soon for a Gen Ed. ! Thank you for posting!🙌✨
Great video, I really learned a lot. Cannot wait to watch the next one!!
Thank you for making this info available to the youtubes, as of now i plan and hope to be able to watch the whole course but we shall see :)
thanks for sharing this I was always interested in Astronomy and this Lecture has certainly improved my general knowledge of our universe. Look forward to Lecture 2
Science has always been an interest of mine, i tried Biology course in college which didn't work out. but now i'm totally interested in Astronomy and will be using these lectures to prepare for college. :) Thank you!
I'm a student at SOSU and am so excited that you take the time to make these videos. 😅
this was AMAZING!! i loved this :D thank you for posting!
Well done! I'm listening to these while working. Gotta admit, the flow, the topic, and a good instrumental play list really brings it all together.
what work do you do?
@@trap-pd2mv I work with Earth Observation systems, so a lot of computer work.
this is really well done, thank you so much!
wanna study astrophysics this is helping me with all my basics and refreshing my memory
Thanks for making this vedio public ......this was the only thing I was looking for ...... I really owe u for this🥺
I enjoyed this lecture so much! Better than a tv show
Very informative, thanks. I never really understood powers quite how powers of 10 were worked out until I saw your explanation.
Thank you so much for this uploading this fantastic video 🥰
It explained very well!!
i learned alot
i hope more video's to come :)
Thank you for this🥰 Astronomy is not really a priority in my country but I know this is what I wanted💖💖💖
Thank you for sharing this valuable information. May the force of the universe be with you and give you more knowledge and share it... :)
Very interesting and informative lecture. I enjoyed it very much.
I just entered highschool and saw this video and I loved it, if u couldn’t tell I want to work in a field that relates to this
I love my astronomy class and really want to be an astronomer in the future but I suck at math lol
Thank you for sharing it!! I'm in the middle of my last year of high school and I'd like to study astronomy next year. I can improve my english skills because my native language is Spanish and at the same time I learn about astronomy ♡♡ I'm really grateful for it. Saludos desde Chile :D
Thanks for your Presentation
Thank you for this amazing youtube channel and these valuable courses! I just wanted to know where I can get a pdf file of this course syllables?
You have fueled a fire in me. 😮
Thanks taking an astronomy class this fall semester and I wanted to get a head start.
Same. I am really worried about the calculations. I looked over MITs final exam on open source and I almost cried. I did not know any of the formulas. Way over my head!
Thank you!
Thanks for uploading this!
You say all science points to the big bang, but isn't there another theory that has taken it's place or has it already been disproven?
You’re a great guy
Thank you that's a kind of you..
I learned so much!
Thank you
Thanks buddy!
Amazing
Thanks for sharing, made me reminisce about my college astronomy class!
This was a great Lecture. Thanks for all the demonstrations. I would add though that Astrology is about noticing the patterns of planetary movements and how these patterns affect our psyche. When you have lived life, if you want to see, then it hits you like a brick. LOL. God bless.
Great series. What is the textbook you use for the course?
Thank you.
I love astronomy and I currently in 1 year of astronomy, my professor had didn't started about astronomy till now, but I am eagerly to start astronomy. What should my step by step process. Can you give me a piece of advice?
It really helpssss
Please recommend some good books to read as a beginner.
Is there a way I could get your course through you tube? I've been into astronomy since I was 7 years old. I possess knowledge of astronomy beyond the average person but I am open to learning beyond what I know now.
40:00 I always used Astronomy, Astrophysics, Cosmology as synonyms. Won't do that anymore.
Hello! Very instructive and informative lecture! However I have to point out that it needs a little refining. Others have pinpointed the poor analogy of the mass of a teespoon of neutron star material and cars... I have to mention that the earth's radius and not the diameter is about 6370000 m as mentioned at 52:37!
Hello, I'd like to ask about the small circle of range you say we've observed of our galaxy - by observe you mean studied? Because if it's literally about seeing stuff, don't we have real images of say the black hole at the center of the galaxy, or Andromeda?
What book do you use for your course?
Thank you so much. I plan on staying the course and learning a bit. Peace love & jello
TomCat
What is the best school to study astronomy and astrophysics
I have heard about space-time, but why do we call space-time warp, not just space warp as seen from the graph at 27:20?
When you view something, how do you know if you're looking at a small object close up or a large object far away?
Are these a good resource for Astronomy Olympiads?
my grades aren’t good especially with online school but being an astrophysicist/theoretical physicist is a dream of mine
am i gonna be ok?
I'm homeschooled and I constantly worry whether or not what I've learned is equivalent to whatever schools teach in their education. I've always been mostly ahead, but being at my last year of high school, I just don't know. My advice is this: just keep studying and if you have the passion for it, learn everything you can, and even go above and beyond what's expected of you. Doing the bare minimum of work won't push you further. My dream is to get into the work of either marine biology, meteorology, or possibly psychology? Still unsure because they're all so cool! Good luck out there 👍✌
How did they take that picture of Saturn with Earth in it? Is that taken from some spaceship we sent out years ago?
hi..i need to prepare for toefl test..kindly let me know if there is any source for studying astronomy available?
ha, I only knew Scott Manley from his ksp videos. anyway, watching the asteroid discovery video I wonder if Earth meets the prerequisite for being a planet. It doesn't look like Earth was able to clear its neighbourhood from other objects.
Bro! Thank you so much for this video. I know its a little outdated but!, It CAME IN CLUTCH!. I really appreciate you man! /.\
@21:39 The question of "how far out have we observed stars and planets?" The circle u put there can't b correct. Right? I mean we have observed stars outside of our own galaxy yes? I'm confused lol
Thanks for sharing 👍2022
OK I understood now
56:10 Brian Greene
Is the cosmos a finite thing?
"Before we begin"?
Hunh? That was your beginning. You began back there...
do light speed increases at blackhole.
Why TF would anyone dislike this?
The photo of the protoplanetary disk comes from where? Do you know when it was taken and by whom; that is, what group took the photo?
Indeed. I apologize for the lack of references with my videos. These were uploaded for my students and I have not yet adjusted them entirely for the public. I hope to add a list of all references soon. As for your question, this photo, which was released on November 6 of 2014, was taken by the Atacama Large Millimeter/submillimeter Array, or ALMA. Here is a link to an article about the image in question. I hope this helps! www.popsci.com/article/science/astronomers-capture-beautiful-image-distant-planets-forming
Mr. Spahn - Thank you so much for uploading these lectures. It is very much appreciated.
@@SpahnsScienceLectures
52:55 Earth diameter is 12.756 km
on the second photo you see no stars because it is a round sunset...you can see a moon cresent like that, the new moon just after sunset… you can tell by the way the moon looks obviously..
Brian greene, author of some amazing books! Great video though!
Thank you for publishing these lectures. I'm getting into astrophotography and wanted to understand more what I'm looking at!
this is well
Second image, photo of crescent moon, that "star" is Venus.
Does the sun nova on a clock cycle? I heard every 12,068 years every star novas.
Not all stars get nova,only super massive stars are nova ,example ears is not massive it's not nova on a time but if stars are massive than sun at list more than 8 times its get a nova
56:12 Brian Cox? close, but no cigar .. Brian Greene
I want to learn about astronomy but I can not afford to study it in college. How can I go about learning more, beyond general reading and CZcams videos?
18:30 Shinra Tensei
A teaspoon of neutron star weighs about 10,000,000 tons, or 2,500 cars... Wait what?! A car weighs 4,000 tons?
Yeah he definitely got confused there. Ten million tons would be ten million cars...
How strong/weak does a gravitational field have to be for dark energy effects to take place? For example, how far outside the (albeit ill defined) edge of the Milky Way does the cosmological constant come into play?
Must ,......?
Better to use exponential 10 to talk about very large numbers. The names have no intuitive meaning.
29:00 ... "70 or so galaxies in your butt". Hehe
Hi there!
I am stuck upon a problem for few days and I haven't solved it yet. Can you solve this problem please?
Assume that a gravitational anomaly in the solar system has shifted a field of asteroids into Earth's orbit, and the field is now moving directly towards Earth. The asteroid field has a density of p (asteroids/volume), and each asteroid has an average mass of m. The asteroid field stretches over a distance d in Earth's path. Assume that the Earth moves with a velocity of v, the asteroids with u, and that v>>u. Let R be the radius and M the mass of the Earth. The Earth collides with asteroid field. Show that the slow-down velocity ∆v of the Earth due to the asteroid collisions is given by
∆v = v(1-1/(1+pi (R^2)dp (m/M)))
I hope to see your response soon.
Time is up.
@@r_1901 I solved it and got selected!
I dont belive there is any reason to get an excistencial crises. vi send a prope out past Saturn , as a big selfistick, we are awesome
You drive a really heavy car! Lol
whoever disliked has no interest in astronomy
@19:17 Please check your maths there I dunno what cars you have that weigh 4000 tons lol
I'm listening to this lecture because I want to explore the flat earth theory in pursuit of truth. i have always thought the mainstream version of space is true, but never occured to me it could he a government coverup.
Who is here for TOEFL test?
Hey look ... our Galaxy is flat 🙄🤦♂
why am i watching this? i do not know.
i could definitly stand on a neutron star