Brady filming with Professor Ed Copeland at the Large Hadron Collider.
Brady Haran

Space Careers: Brady Haran

  • 20th Jul 2025
  • Author: Caitlin Hauxwell

This summer, the National Space Centre is celebrating the global space industry. As part of our Space Across the World theme, we’re highlighting interesting careers in science and space, taking a sneak peek into all the working parts that make the international space community go round.

From Test-Tube to YouTube

I had the privilege of chatting to Brady Haran, the science journalist and filmmaker behind some of the most popular educational YouTube channels including Numberphile, Sixty Symbols, Computerphile, and Deep Sky Videos.

Brady outlined how his lifelong interest in space and science led him to working on the Test Tube project (an award-winning series of videos highlighting the ups and downs of life as a scientist), and from there onto YouTube, when the platform was in its infancy.

He then shared how he was able to establish such a prolific career in online video journalism and graciously let me pick his brains about asteroids, Moon landings, scientific mysteries, and his career as a whole.

I met with Brady over a Zoom video call on a Monday morning early in July, and the room in the background behind him was busy in an organised-chaos kind of way. Posters, books, models and papers were dotted between furniture. In contrast to the active backdrop, Brady sat relaxed in a blue t-shirt. And despite a few technical blips and some pesky flu symptoms from both of us, the conversation began.

Brady, could share your childhood interests and your background before you started YouTube?

I grew up in Australia, in Adelaide. My childhood interests were pretty typical – I was always really into space, Lego, Star Wars. I also got a real fascination with Apollo quite young, because my dad was always fascinated by the Apollo Moon landings and I think I got that from him. And that’s carried through until today. I’m real Apollo-obsessive. But I was also really into sport and all the usual things an Australian boy would be into. But I quite liked the science-y and maths-y things and found science and math very easy at school.

I always wanted to be a journalist, a newspaper journalist. Partly because that was what my dad did, and maybe you don’t see much past what your dad does. But that was my dream and that’s what I became.

I did one year of university but after that year got accepted into a cadet programme at the big newspaper in Adelaide, so I left university and became a journalist. I was a newspaper journalist in Adelaide for about seven years, and I worked in different areas of journalism. Towards the end I was getting quite into science journalism, but I was a bit of an everything-journalist.

And then I moved to the UK. I started working for the BBC – their website, at first, but then they moved me into more television and filmmaking because they wanted me to make videos. Then, with all these new video skills I had and my interest in science, I started a few little side projects, making videos about science with the University of Nottingham (because I was living in Nottingham by this point). I started a few YouTube channels when YouTube wasn’t that big of a thing. And they really blew up, then YouTube blew up. I found myself with really popular YouTube channels and then I just transitioned into making YouTube videos about science-y, geeky things full-time.

And how many subscribers do you have now?

Across all the channels, there’s just over 11 million subscribers, 1.4 billion views, and 4,795 videos.

I’m at least 1,000 of those views! You talked about Apollo, have you seen any Moon rocks?

I did a video on Objectivity where I went to Houston, and I went to the vault where all the Apollo rocks are stored. Huge, underground thing. There are these huge cabinets, and they were like “there’s all the Apollo 11 rocks, all the Apollo 12 rocks…” and they’ve got a separate lab on the side where they take them all out. And they have the ‘Genesis rock’ there, which is my favourite Moon rock. They had that, and I was able to see it with my own eyes.

They’re funny. You know, they cut them up and keep every piece of dust obviously, but when they throw their rubbish out at the end of the day I guess there’s a thin chance there’s some grain of Moon somewhere, so they have to incinerate all their rubbish there in the vault. Because nerds like me could just rifle through the bins.

Which is fair enough, because my overshoes I had to wear when I was in the vault – I kept them!

Is it cool, being able to interview people at the forefront of science?

It’s amazing. An amazing privilege. And yeah, it still excites me, and I feel really, really fortunate.

It has also spoilt me a little bit. Now, sometimes, if I go to a public lecture and I’m sitting in the back I find it frustrating that I can’t ask all my questions! Or if I go to a museum just as a guest, I can’t believe I’m not getting to touch things. But I’m really, really grateful for the opportunities that have come about as a result of [my career]. I feel honoured and really lucky.

The people from the Nobel [Institute] have always seen the videos and liked them, and last year they invited me to the Nobel Prize ceremony and I went along to the dinner and everything. It was really, really amazing.

It’s cool because there are these things that have all this mystique around them, like Nobel prizes, and always seem like a magical, fairy-tale thing. So to actually go there and see what it looks like...makes things seem more amazing.

Like the Large Hadron Collider – you always hear about it, then to go there and go inside it and see it and smell it and touch it. Things like that are really cool.

Do you feel like you’ve learned a lot about physics and space from these years of interviewing people?

Yes, of course. But I have also probably forgotten stuff.

I always think it’s really important to play the fool a little bit. I’m interviewing people for various reasons and I think it helps with the video. It helps the audience. It makes the person I’m interviewing feel more comfortable. But it does sometimes happen that I’ll be interviewing someone and I’ll be asking my dumb questions, and at the end of the interview I’ll put my camera down and then I’ll say I’ve got a few more questions. And I’ll ask really complicated stuff.

Are there any videos in particular that you’re really glad you made?

On Deep Sky Videos, we made 110 videos about each of the Messier objects in space. I’m really proud that we did that. It took us many, many years and sometimes it felt like a hard slog because some of [the objects] are a bit same-y but we found something to say about each one.

I really love going to telescope sites and observatories. So going to Paranal in Chile, where the Very Large Telescope is…was a real highlight of my life. Also going to the ALMA in the Atacama Desert up high in the mountains where all those receivers are was really amazing. And La Palma!

We were there for a few nights and filmed in all those telescopes. I love really, really big telescopes. I think they’re like the cathedrals of science. These huge structures that really take my breath away. How silent they are! How these huge things can swing around and move and you don’t even know what’s happening. So yeah, I love doing that as well.

Do you have any advice for people who may want to go into science journalism?

One piece of advice I give to people making videos is to keep making more videos. A lot of people come up to me and they’ve had one idea or one video they’ve made, and they’re disappointed it hasn’t become successful and been watched a million times. They’re like, “what can I do to make people watch my video?” I always think that’s really the wrong way to attack the problem. The thing is, once you’ve made a video, go on to make the next one. And once you’ve made that one, go on to make the next one. And then after that, go on to make the next one. Forget about the ones that came before, because if you keep making new content – whether it’s videos or you’re a writer or you’re doing a podcast – you’ll get better at it the more you do it. And secondly, you become a bigger target to be found.

If you make one video that doesn’t get watched many times, you think you’ve failed and you become dispirited, but everyone at the start isn’t being watched a lot. The important thing is not to stew over your success. If you’re all about making the stuff, I think that’s a good sign you’re going to be successful. My other advice is to make sure you have good sound. People will forgive a slightly dodgy video if they can hear what’s being said and it sounds good. Don’t record next to a lawnmower.

  1. Alien.
    Leo_Visions, Unsplash

    What about any burning astronomy questions that you have, or you’d like to talk more about?

    I’m really curious as to what’s going to happen with the discovery of alien life. I have a theory that’s not popular – that it’s going to be an anti-climax. It’s going to be gradual. We’ll make a few gradual discoveries that hint at life, and we get closer and closer to confirming it until we’re about 80% sure. And it will get to a point where people don’t realise we’ve found them.

    In films and media, it’s often portrayed as this paradigm-changing moment, that changes the way we look at our place in the universe. And I don’t think it’s going to play out that way.

  2. Comet 1P/Halley
    NASA/W. Liller

    If you could go anywhere into space and be safe, where would you go?

    I mean, it would be cool to go and look at my asteroid. Just to see what it looks like. I’d love to go and cruise alongside Halley’s Comet for an hour maybe, because I’m obsessed with comets. I could go and see what it’s like at the moment, out there in the cold.

    I’d love to go and look at one of the two Voyagers for a while; I’m very drawn to them. The romance and mystery of them, all cold and alone out there. Oh, and I’d love to see all the Milky Way, since it’s the only thing we never get to see fully.

  3. Asteroids
    NASA/JPL-Caltech

    Now, there’s one particular place in space related to you. There’s an asteroid that was given your name! How did that happen?

    It kind of happened behind my back! I didn’t know it was happening until it happened. Seriously, I think that’s one of the coolest things that’s ever happened to me. Like, I’ve been lucky enough to win a few awards and prizes, but nothing compares to how excited I was to have an asteroid named after me.

    It's probably not super surprising, because it’s mainly nerds who name asteroids and nerds appreciate my videos more than most people. So, it was just a nerd or two that really appreciated my videos and were also in a position to recommend some names to the asteroid naming authorities.

Asteroid 46925 Bradyharan

It is just a pixel, but I’ve seen lots of pictures of the pixel moving through the starfield. But they’ve also made some renderings of it because it’s surprising how much information they can figure out from a pixel. Just from the curve of this pixel getting a little bit lighter, and lighter, and darker at different rates they’ve been able to tell a lot about its size and its shape.

I work with an artist called Pete McPartlan and he took a lot of the real data we had about [the asteroid’s] size and shape and its colour and things like that. We were able to render something as to what it might look like. It’s been described to me as looking a little bit like a big guitar pick. It’s got this semi-triangular shape.

Thanks to Brady for his time, and for being willing to go on the other side of the interview for once! Don’t forget to look out for more space-related career blogs.

Full references / credits:

(Banner image) Brady filming with Professor Ed Copeland at the Large Hadron Collider. Credit: Brady Haran

(1) Brady receiving his OAM from King Charles at Windsor Castle. Credit: Brady Haran

(2a) Brady interviewing Sir Martyn Poliakoff. Credit: Brady Haran

(2b) Brady at Observatorio Astrofisico on the island of La Palma in the Canary Islands. Credit: Brady Haran

(3) Brady filming with Professor Ed Copeland at the Large Hadron Collider. Credit: Brady Haran

(4) Brady at the annual Nobel prize ceremony. Credit: Brady Haran

(5) Brady in the Atacama, visiting the ALMA observatory. Credit: Brady Haran

(6) Brady at the Very Large Telescope in Paranal, Chile. Credit: Brady Haran

(7a) Alien. Credit: Leo_Visions, Unsplash (https://unsplash.com/photos/gray-scale-photo-of-human-face-sMPRCsoUM4A)

(7b) Comet 1P/Halley. Credit: NASA/W. Liller 

(7c) Asteroids. Credit: NASA/JPL-Caltech

(8) A rendering of asteroid 46925 Bradyharan, made by Pete McPartlan. Credit: Brady Haran/Pete McPartlan