Browse content similar to Space Special. Check below for episodes and series from the same categories and more!
Line | From | To | |
---|---|---|---|
Coming | 0:00:02 | 0:00:02 | |
Coming up | 0:00:02 | 0:00:07 | |
Coming up next, | 0:00:07 | 0:00:07 | |
Coming up next, Click, | 0:00:07 | 0:00:07 | |
Coming up next, Click, followed | 0:00:07 | 0:00:07 | |
Coming up next, Click, followed by | 0:00:07 | 0:00:08 | |
Coming up next, Click, followed by Newswatch. | 0:00:08 | 0:00:26 | |
We've long fantasised about the possibility | 0:00:29 | 0:00:30 | |
of life on other planets. | 0:00:30 | 0:00:38 | |
But it was only in 1995 that we actually found the first | 0:00:38 | 0:00:41 | |
planet outside of our solar system. | 0:00:41 | 0:00:43 | |
These exoplanets are hard to find. | 0:00:43 | 0:00:44 | |
Of course they are, they're relatively tiny. | 0:00:44 | 0:00:47 | |
And so far they've mainly been detected indirectly, | 0:00:47 | 0:00:51 | |
either by the incredibly slight dimming of a star's light | 0:00:51 | 0:00:55 | |
as the planet moves in front of it, or by the wobble of the star | 0:00:55 | 0:00:59 | |
caused by something orbiting it. | 0:00:59 | 0:01:02 | |
In the last 20 years we've detected about 2000 exoplanets, | 0:01:02 | 0:01:05 | |
but we haven't actually seen many at all. | 0:01:05 | 0:01:10 | |
And this is why. | 0:01:10 | 0:01:15 | |
Well, the planets are very, very faint compared to a star | 0:01:15 | 0:01:18 | |
and they're very close to a star. | 0:01:18 | 0:01:19 | |
The kind planets where we might find life, an earthlike planet orbiting | 0:01:20 | 0:01:23 | |
a star, would be 10 billion times fainter than a star. | 0:01:23 | 0:01:27 | |
But if you can see the planets, you can start to look for evidence | 0:01:27 | 0:01:31 | |
of life on their surfaces. | 0:01:31 | 0:01:36 | |
What you need is something to block out the light of a star. | 0:01:36 | 0:01:39 | |
What you need is a star shade. | 0:01:39 | 0:01:45 | |
Due to go into space in the middle of the next decade, | 0:01:45 | 0:01:49 | |
it is a crazy-sounding thing that can be flown in between a space | 0:01:49 | 0:01:54 | |
telescope and the star to precisely block out the star's light | 0:01:54 | 0:01:57 | |
and reveal any planets. | 0:01:57 | 0:02:01 | |
It'll be a few tens of metres in diameter, and in order to block | 0:02:01 | 0:02:07 | |
out just the light from that distant star, it'll need to be | 0:02:07 | 0:02:10 | |
about 40,000 kilometres away from the telescope. | 0:02:10 | 0:02:21 | |
And this is not even the maddest part of the scheme. | 0:02:21 | 0:02:24 | |
See, there's a problem. | 0:02:24 | 0:02:25 | |
The star shade won't fit in a rocket. | 0:02:25 | 0:02:28 | |
And that's why a big part of the work being done here | 0:02:28 | 0:02:31 | |
at Nasa's Jet Propulsion Laboratory, in Pasadena, and the beautiful | 0:02:31 | 0:02:34 | |
solution they've come up with, is all about fitting the thing | 0:02:34 | 0:02:37 | |
into a tight space and then unfurling it once in space. | 0:02:37 | 0:02:40 | |
And the inspiration comes from origami. | 0:02:40 | 0:02:41 | |
Wow! | 0:02:57 | 0:02:59 | |
It's really quite impressive. | 0:02:59 | 0:03:00 | |
At the end you can see how large an area you can fill with such | 0:03:00 | 0:03:04 | |
a small volume of material. | 0:03:04 | 0:03:07 | |
But this is only the half of it because you have petals | 0:03:07 | 0:03:10 | |
which come at here as well? | 0:03:10 | 0:03:12 | |
Yes, exactly. Oh, my goodness. | 0:03:12 | 0:03:15 | |
This cardboard model is the latest test to make sure the shade | 0:03:16 | 0:03:25 | |
can unfurl perfectly when it's all alone. | 0:03:25 | 0:03:26 | |
The flower shape blocks out the light better than a circle, | 0:03:27 | 0:03:30 | |
and those outer petals need to be made to an accuracy | 0:03:30 | 0:03:33 | |
of 50 to 100 microns. | 0:03:33 | 0:03:40 | |
If I may say, this sounds crazy! | 0:03:40 | 0:03:42 | |
This sounds like we want to spot some planets, | 0:03:42 | 0:03:44 | |
what are we going to do? | 0:03:45 | 0:03:46 | |
We're going to put a shade in space and we're going to fire | 0:03:46 | 0:03:50 | |
it 40,000 kms from the telescope? | 0:03:50 | 0:03:52 | |
That sounds insane. | 0:03:52 | 0:03:55 | |
Yeah, but what's really cool about that if there is this insane | 0:03:55 | 0:03:59 | |
concept of how you're going to fly this | 0:03:59 | 0:04:01 | |
massive shade so far away, 40,000 kilometres away from the telescope, | 0:04:01 | 0:04:04 | |
but once you start breaking it down into little problems, | 0:04:04 | 0:04:06 | |
you start testing and build a petal, you build the truss, | 0:04:07 | 0:04:10 | |
you build the shield, you realise piece by piece | 0:04:10 | 0:04:12 | |
what engineering needs to go in to that problem to solve it. | 0:04:12 | 0:04:15 | |
So we just break it down into little problems that we can solve | 0:04:15 | 0:04:19 | |
in a piecewise fashion. | 0:04:19 | 0:04:21 | |
Yeah, and isn't that a great motto for life? | 0:04:21 | 0:04:23 | |
Take an impossible problem and break it down into more possible chunks. | 0:04:23 | 0:04:29 | |
I love the fact that at JPL you can just wander into a random room | 0:04:29 | 0:04:34 | |
and it is called something like the Extreme Terrain Mobility lab. | 0:04:34 | 0:04:37 | |
That's what they're doing here. | 0:04:37 | 0:04:38 | |
They're making robots to cope with extreme terrain. | 0:04:38 | 0:04:40 | |
This is Axel, which is a robot with a pair of wheels that can be | 0:04:40 | 0:04:44 | |
lowered down cliffs. | 0:04:44 | 0:04:45 | |
And this is Fido and Athena. | 0:04:45 | 0:04:47 | |
These are the prototype is for the Mars rovers | 0:04:47 | 0:04:50 | |
Spirit and Opportunity. | 0:04:50 | 0:04:51 | |
Of course the point about robots is they can do things that humans | 0:04:51 | 0:04:58 | |
might want to do but in places that humans can't go. | 0:04:58 | 0:05:01 | |
All of these have fairly familiar designs, wheels here, | 0:05:01 | 0:05:03 | |
some robots have legs. | 0:05:03 | 0:05:06 | |
But Kate Russell has found one that looks like nothing | 0:05:06 | 0:05:09 | |
I have ever seen before. | 0:05:09 | 0:05:10 | |
In 2012 the world watched with baited breath as Nasa deployed | 0:05:10 | 0:05:13 | |
a rover on the surface of Mars using a sky crane. | 0:05:13 | 0:05:16 | |
This kind of science is incredibly expensive. | 0:05:16 | 0:05:24 | |
The rover weighed 900 kilograms, as much of a full grown giraffe. | 0:05:24 | 0:05:30 | |
But the equipment required to land it gently, it had to be able to take | 0:05:30 | 0:05:34 | |
the weight of 32 giraffes. | 0:05:34 | 0:05:36 | |
Total cost? | 0:05:36 | 0:05:37 | |
$2.5 billion. | 0:05:37 | 0:05:40 | |
It would have been much cheaper if Curiosity was lightweight, | 0:05:40 | 0:05:43 | |
came flat-packed and was sturdy enough just to be dropped | 0:05:43 | 0:05:46 | |
on the red planet's surface. | 0:05:46 | 0:05:52 | |
Meet Super Ball, a tensgrity robot in development to Nasa Ames. | 0:05:52 | 0:05:58 | |
This lightweight sphere-like matrix can be packed down flat, | 0:05:58 | 0:06:02 | |
taking up minimal space in a rocket and vastly reducing launch costs. | 0:06:02 | 0:06:05 | |
Because of the unique structure of this robot and the fact | 0:06:05 | 0:06:08 | |
that it can deform and reform itself and take massive impacts, | 0:06:08 | 0:06:11 | |
eventually Nasa will be able to literally throw it at the surface | 0:06:11 | 0:06:17 | |
of a planet and its scientific payload in the middle | 0:06:17 | 0:06:20 | |
will be protected. | 0:06:20 | 0:06:24 | |
It's bouncy. | 0:06:24 | 0:06:27 | |
Once deployed, Super Ball can handle much rougher terrains then a rover, | 0:06:27 | 0:06:32 | |
rolling right over obstacles and up and down hills. | 0:06:32 | 0:06:38 | |
Tendon wires connecting the struts spool in and out to create momentum, | 0:06:38 | 0:06:41 | |
in much the same way as flexing your muscles | 0:06:41 | 0:06:44 | |
moves your limbs. | 0:06:44 | 0:06:45 | |
If it bumps into anything solid, it'll just bounce back. | 0:06:45 | 0:06:48 | |
It should even be able to survive falling off a cliff. | 0:06:48 | 0:06:51 | |
The next step for Super Ball is to redesign the robot such | 0:06:51 | 0:06:54 | |
that it can actually survive at least a one-storey drop. | 0:06:54 | 0:06:58 | |
You can expect to see a system like this on an actual Nasa mission | 0:06:58 | 0:07:02 | |
probably in 15 or 20 years' time. | 0:07:02 | 0:07:07 | |
Over at JPL, they are working on limbed robots. | 0:07:07 | 0:07:11 | |
Its research spawned from the DARPA Robotics Challenge where teams | 0:07:11 | 0:07:14 | |
competed to create highly mobile and dextrous robots that can move, | 0:07:14 | 0:07:17 | |
explore and build things without human intervention. | 0:07:17 | 0:07:31 | |
The plan for King Louis is to be sent into space to build stuff | 0:07:31 | 0:07:35 | |
with visual codes a bit like QR codes to guide it. | 0:07:35 | 0:07:38 | |
We have a structured environment. | 0:07:38 | 0:07:39 | |
We know what we are putting together so we put signposts | 0:07:39 | 0:07:42 | |
onto all the bits and pieces of the structure we are putting | 0:07:42 | 0:07:46 | |
together, that tell the robot a few things. | 0:07:46 | 0:07:48 | |
Most importantly, it tells the robot where those things | 0:07:48 | 0:07:50 | |
it is manipulating are in space, literally and figuratively, | 0:07:50 | 0:07:53 | |
so it can align itself better. | 0:07:53 | 0:07:54 | |
The codes will also include construction information | 0:07:54 | 0:07:56 | |
like which bits go together and how much torque to apply to a bolt. | 0:07:56 | 0:08:03 | |
This will allow robots to work autonomously in teams, | 0:08:03 | 0:08:06 | |
building space stations or planetary habitats faster | 0:08:06 | 0:08:15 | |
and more economically than previously possible. | 0:08:15 | 0:08:16 | |
But Nasa hasn't completely given up on our four-wheeled space helpers. | 0:08:16 | 0:08:19 | |
Here we've tried to develop new kinds of robots | 0:08:19 | 0:08:22 | |
for future space exploration. | 0:08:22 | 0:08:24 | |
This robot, for example, is called K-Rex. | 0:08:24 | 0:08:26 | |
It's one of our main research robots that we develop and test here | 0:08:26 | 0:08:30 | |
in the robotscape at Nasa Ames. | 0:08:30 | 0:08:32 | |
This is a large play area for robots, a proving ground | 0:08:32 | 0:08:35 | |
that we use to really try to develop things like navigation | 0:08:35 | 0:08:38 | |
or do the mission simulations. | 0:08:38 | 0:08:49 | |
So, the biggest question perhaps of the day for me, | 0:08:49 | 0:08:51 | |
can I drive K-Rex? | 0:08:51 | 0:08:53 | |
Definitely. | 0:08:53 | 0:08:53 | |
Let's have you do that. | 0:08:53 | 0:08:54 | |
Yes! | 0:08:54 | 0:08:54 | |
Now lots of you think we Click reporters have the best jobs | 0:08:54 | 0:08:58 | |
in the world, but after spending a day at the roverscape testing | 0:08:58 | 0:09:01 | |
ground, I think there is another contender for that title. | 0:09:01 | 0:09:08 | |
I've had some really engaging virtual reality experiences. | 0:09:16 | 0:09:18 | |
One of them simply set in an office, but it seems if you are entering | 0:09:18 | 0:09:22 | |
at VR world, you might as well go somewhere really | 0:09:22 | 0:09:25 | |
exciting, like space. | 0:09:25 | 0:09:30 | |
That's where Home: A VR Spacewalk takes you. | 0:09:31 | 0:09:33 | |
Inspired by Nasa's training programme, it aims to bring | 0:09:33 | 0:09:35 | |
a mission in space to the masses. | 0:09:35 | 0:09:41 | |
After getting used to your new surroundings, you undertake | 0:09:41 | 0:09:44 | |
an emergency mission. | 0:09:44 | 0:09:48 | |
Whilst enjoying views of Earth from afar, a friendly hand | 0:09:48 | 0:09:51 | |
from a fellow astronaut helps to get you on your way. | 0:09:51 | 0:09:54 | |
Ah, I can hold a hand. | 0:09:54 | 0:09:55 | |
I feel a strange sense of safety there is another astronaut here. | 0:09:56 | 0:09:59 | |
The BBC commissioned the experience last year, | 0:09:59 | 0:10:01 | |
as its first steps into the world of virtual reality content. | 0:10:01 | 0:10:08 | |
We've taken all the storytelling power of the BBC and applied that | 0:10:08 | 0:10:11 | |
behind it, so there's a great script, a great narrative and then | 0:10:11 | 0:10:14 | |
we've looked at all the cutting edge explorations people are doing around | 0:10:14 | 0:10:18 | |
VR, in terms of bio-monitoring, haptic feedback etc etc and trying | 0:10:18 | 0:10:20 | |
to bring that into it as a massive piece of learning really. | 0:10:20 | 0:10:29 | |
My preview here on the HTC Vive saw it set up with a chair providing | 0:10:29 | 0:10:33 | |
haptic feedback and a heart rate monitor which resulted | 0:10:33 | 0:10:35 | |
in my being sent back to base if readings went too high. | 0:10:36 | 0:10:41 | |
But apparently I'm very calm in space. | 0:10:41 | 0:10:43 | |
In March it will be released for Vive on Steam as well as Oculus. | 0:10:43 | 0:10:47 | |
Wow, this is incredible. | 0:10:47 | 0:10:50 | |
Oh, goodness! I feel most disorientated! | 0:11:01 | 0:11:03 | |
Wow, the depth of it I think was the thing | 0:11:03 | 0:11:05 | |
that was most surprising. | 0:11:05 | 0:11:06 | |
You really got a sense of being up high, seeing things | 0:11:07 | 0:11:10 | |
really, really far away. | 0:11:10 | 0:11:11 | |
It took a while to get grips with what I was meant to be doing, | 0:11:11 | 0:11:15 | |
but just the fact that I was moving around within space | 0:11:15 | 0:11:18 | |
was quite incredible. | 0:11:18 | 0:11:19 | |
Whilst it wasn't possible to create a sense of weightlessness, | 0:11:19 | 0:11:21 | |
the pictures were amazing, but obviously, I can't vouch for how | 0:11:21 | 0:11:24 | |
true to life they are. | 0:11:24 | 0:11:28 |