Rebecca: What do you do on the space station?
Ed: We have a lot of things to do, life is actually quite busy. Most of the time we are running experiments. The rest of the time we're doing things like you do around your house, except it's on a spaceship. You have to clean it up, keep everything running, sometimes you have to do plumbing. It's a lot of work just to keep all the systems working.
Lois: What do you enjoy most about being an astronaut?
Ed: There's a lot of thing I enjoy. The biggest one of course is you get to fly in space. That's a really neat thing. Being here is a lot of fun. You get to fly inside here and that is a lot of fun.
Victoria: What's the strangest thing you have seen in space?
Ed: Well the strangest thing I've seen up here is that fact that things don't drop. When you let them go they just stay there. It takes a while to get used to that.
Connor: What is it like when you blast up to space?
Ed: It's a real thrill to blast up to space. What it feels like is a like a huge person puts their hands behind you and pushes you. We go up so fast that after only eight minutes we're up in space.
Michael: How do you know what time it is?
Ed: We go so fast that we go around the Earth once every 90 minutes. The sun comes up for us 16 times a day, so you can't look out the window to tell the time. So we just have to use our watches.
Gabriella: What do you do in your spare time?
Ed: My favourite thing to do in my spare time is to look out the window and take photographs of the Earth.
Antonia: Have you ever been ill in space? If so, how do you deal with it?
Ed: I've never actually got sick up here. That's because when you get sick on the ground it's because you've caught germs off other people, but there's only one other person up here, so along as he doesn't get sick, I won't get sick.
Marcus: How do you get all the water you need and do you recycle it?
Ed: We get our water from recycling. When you breathe, you actually breathe out water. If you breathe on a window you can see that. So we filter our air and condense the water out of that so we can drink.
Jamie: What training do you need to be an astronaut?
Ed: It takes a lot of training, everything from studying physics and astronomy to learning to fly jets. That is one of the most fun things about this job, that you get to learn so many things.
Alex: How do you get your electricity?
Ed: We use big solar panels outside the space station and they give us our electricity and in the night time we use batteries.
Rosie: Can you see our school through your window?
Ed: I don't think I can actually see your school, but I can see large cities. Just yesterday we went over London and I got some very nice photos of London from up here.
Tom: Do you have any problems with meteorites crashing into the ISS and how do you deal with them?
Ed: It's not that big of a problem as space is mostly empty. But there are a lot of very small meteorites, smaller than a grain of sand. And when you go outside the space craft you can see chips in the paint, caused by those small meteorites.
Paige: What are the feelings you get when you look down from space?
Ed: The biggest feeling I get when I look down is that I would like to visit all these strange and interesting places that I can see from here.
Alex: Can you have a shower on the ISS?
Ed: No, without gravity we can't take a shower, so we wash up with soap and a towel.
Jamie: How does it feel when you re-enter Earth?
Ed: First off I've only re-entered in a space shuttle before, but when I leave here, I'll be leaving in a Soyuz, which is a Russian ship in three months. But inside the shuttle, you start to feel heavy, because the shuttle is slowing down. And outside you can see bright orange flames because the air gets so hot as we slow down.
Ryan & Oscar: How long will it take you to build the ISS?
Ed: The construction process is still going on and I think it will take about five more years.
Kirsty: How can you tell if it's night or day?
Ed: The easiest thing to do is to look down on the ground. If you can see the ground very well, then you're on the daylight side. If you're on the dark side of the Earth then sometimes you see mini lights and sometimes you can see lightning storms.
Michael: What are the reasons for building the ISS?
Ed: There's a lot of reasons for building the ISS, I think the big reason is to help us learn the things we need to learn before we try to go to Mars and back to the Moon.
Lucy: When do you think we'll get to Mars?
Ed: That's a good question, I'd certainly like to go myself. Maybe one of you will get to go. I hope so.
Click here to listen to the full chat
UK school kids speak to astronaut in space
Try the shuttles quiz
I talked to astronauts on a space station!
