We Asked a NASA Scientist – Does NASA Know About All the Asteroids?

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Does NASA know about ALL the asteroids? We know about the vast majority of larger ones and none of those pose a threat, but space is big, so we’re always on the lookout. NASA asteroid expert Dr. Amy Mainzer explains. Learn more: nasa.gov/planetarydefense

  1. tohtoriTurvotus

    Quick, hide the asteroids! NASA is at the door!

  2. Gregory Kitchens

    That’s probably not a question you want the answer to, and you also don’t want the answer to what the plan is if a major asteroid is going to hit earth. You really don’t want the answer to that.

  3. Khaleda Begum

    Wow, I want to be an astronout of NASA.


    What about solar storms?

  5. Jenniffer de Jesus

    Next: how many rockets has been launch

  6. Zoo Brawler

    I want to know about Aliens….

  7. Srj Rnj

    Will the world end in 10 years from now?

  8. Antang Gamer

    Penipuu jakooo

  9. Elina Paudel

    Interesting…. I like it 👌Astronomy is so amazing 😍❤👌

  10. Alan Peat

    There seeing space ships 🚀 on the 🌙 right now get me , don,t now about here🛰🗼🛰

  11. in2dionysus

    Just worry about that rogue planet comin at us that is 2000 times larger then the sun UY Scuti, lol

  12. irin a

    That background music is totally distracting, can’t hear a thing with concentration. Please remove the background music completely for next videos.

  13. Jose Valadez

    living in fear,

  14. Jose Valadez

    clown show

  15. M. Richard Speights

    NASA produced this video?

    Grammatically, the answer to this awkwardly worded, vague question is, yes, NASA knows about all the asteroids. If the space agency were this imprecise in building space ships, we’d still stare longingly at a Moon we’d yet to visit.

    Before studying the stars, how about we spend a little more time studying the language we use to describe the stars?

  16. HYPER Ꝋ

    i kept on picturing going to my window right now and seeing a giant one falling because that’s the one we missed

  17. Mystical STD

    If big big asteroid comes. We are fu*ked

  18. Gaurav Tyagi

    A new force .

  19. klutterkicker

    This is the little video you see satirically playing at the beginning of an asteroid apocalypse movie.

  20. Abdo Samir

    Why is Pluto not a planet nasa

  21. Max Power

    I saw a few chart sizes and when compared to our planet its insignificant. We could be in a collision course. The furthest we ca see is not even close to the mass of this object… just wondering😯

  22. MattsLegoChannel

    Question is astronauts brave? Idk just wondering

  23. svenm sandity

    Wow i would of thought making a rover/satellite on a asteroid that doesnt rotate and putting a means to communicate with it on the level of using our own stars light to see things moving around us at a point which could be very powerful in knowing whats moving faster then us around us making a sort of triangle view as we communicate with it every year

  24. Dino Nucci

    Has NASA found a sane Democrat?

  25. Duly Noted

    Our sun, our planet and planets around us, our entire galaxy, is traveling through space. We will encounter something in our path.

  26. Parodist

    Aren’t those ‘smaller pieces’ the ones literally crashing into trucks and stuff here on Earth? Oof, space you scary 🥊🎮

  27. Gerald Key Sr.

    How about the 2 massive planet sized space objects headed toward Earth as we speak that is from another system. How about that this is the reason for the blacklight’s.

  28. Shannon Wilson

    What are all these really dumb questions that you ask nasa? Oh wait, it’s nasa, even these simple and dumb questions is too hard for them…

  29. sparker68

    The answer was no

  30. Walter Cruz

    Number 1 USA.🌎🇺🇸🦅

    God bless America.🇺🇸🙏🏻

  31. Nighthawke70

    Not until SPACETRAK is deployed, dedicated exploration/exploitation is established and in full production, is when a full understanding of the belts is gained.

  32. Angel Coach


  33. hulk hulk


  34. Larry Whittington

    A Project in progress 😎👍🌎💫 Shoemaker has been a great source to discover new ideas. Godspeed

  35. hamsaraj young scientist

    Hi NASA, I am a time traveler I am coming from 1991

  36. Bismark Canales


  37. Song and Music

    Oh, it’s good but not best. I wish, you will make the best. Love you nasa. From,,,,,,,,,, Bangladesh

  38. Claudia Kroll

    Lies!! All lies!!!

  39. Tariq Mulla

    I love NASA. 😘

    Ah nice to see Amy Mainzer after such a long time. I had crush on her. 😁

  40. Wise Mind

    Guessing of probability remains only a quantum drop …🤩💐

  41. prdamico

    If a big asteroid was going to impact earth, you all would not tell us anyways……

  42. star. Watcher Steven

    I would like to see you do more space commentary

  43. ManChan


  44. astronaut PK

    Nasa is my love

  45. Nicola Tesla


  46. Ron M

    Thanks. 👍🏻

  47. AshiYa Ken

    Team planetary defense

  48. Infinite Monkey

    Amy should have her on youtube channel presenting Astronomy.

  49. Stjepko

    Fun fact: If there was big asteroid going to hit earth we would know millions of years before.

    Keep up good job Nasa

  50. Rafael Rodrigues

    Olá Aqui É A Renata Mãe Do Mãe Do Rafael Eu gosto muito do seu Vídeos Muito obrigado por favor Colocar Legenda em Português Abraço Renata Minas Gerais Confins Brasil

  51. Jordane Andrade Soares

    Sou brasileira. Vocês que falam inglês desde criança aproveitem a aprotunidade de ler artigos científicos.

  52. PEC20CE030 Muhamad Jesil

    പൊന്നമ്മച്ചീ 🙏

  53. Rafael Rodrigues

    Olá Aqui É A Renata Mãe Do Mãe Do Rafael Eu Assisto Seus Vídeos na Conta do YouTube Do Meu Filho Eu Gosto muito Obrigado Minas Gerais confins Brasil Abraço Renata

  54. Matt W

    The music is a bit distracting ….

  55. Minty Leaf 🌿ʕっ•ᴥ•ʔっ

    amazing as always

  56. C13.H

    Fun fact: Inspiration 4 is on live

  57. لؤي LUAI 1

    Nothing new happen to me still

  58. lt

    Wow NASA

  59. Wander With Merh

    Watching from Saudi Arabia 😊


    me wating st 1 am from india

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  62. Pratik Hire

    Dr.Amy your So Pretty 😍

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  64. Eve Mcbarnette

    They are going find more ,🚀🚀🪐

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  66. only growth

    Love from india ❤️

  67. Marcus Moreira


  68. Julieth Peña


  69. Kahve Adam


  70. Eve Mcbarnette


  71. immatsen


  72. Blake Hill

    i just want to say i love nasa videos

  73. Joseph Callari


  74. Guilherme Fernandes


  75. Ayan Banerjee


  76. cynbloxy

    whatsapp car

  77. Valdir Souza


  78. Angel

    I love Nasa

  79. Maria gabriella Assis mai


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