11/01/2018 Newsround

Hello, I'm Ricky and this

is Newsround on Thursday morning.

Coming up in the next few minutes...

The astronaut who got

taller in space.

How dog poo could be

the future for energy.

And find out which TV show topped

the most-watched list.

A Japanese astronaut has said sorry

after wrongly claiming he'd grown

an extra 9 centimetres in space!

But his body has been changing.

Here's Ayshah.

Astronaut Norishige Kanai hit

the headlines this week after saying

he'd stretched a staggering nine

centimetres in space -

that's the size of an

average chocolate bar!

But he's now admitted to making

a measurement mistake.

Whoops!

Norishige has grown

during his first month

on the International Space Station,

but only by two centimetres.

It's quite normal for astronauts

because there is zero gravity,

which is the force here on earth

that pulls us downwards.

Without gravity, the bones

in someone's spine can

expand and move apart slightly,

leading to a small change in height.

It doesn't hurt, though.

But don't start thinking

you can all go up in space

if you want to get taller,

because it doesn't last forever.

Eventually your spine goes back

to normal when you come

back down to earth.

Now, we're not afraid of talking

about poo here at Newsround -

but this is a stinky story,

even for us...

Ah, a beautiful evening

in a quaint English village.

Well, things aren't quite

as lovely as they seem,

because this lamp could soon be

powered by poo.

Brian is an inventor,

and he's made a special machine

to turn dog poo into energy

to power street lamps.

This is deadly serious,

so we've spent 2.5 years working

on this in secret to get

the engineering and the

science correct with it,

which is what we've done.

So how does it work?

Lift up this dispenser

and grab a free bag,

however many you want.

We then scoop that into the bag

and all you do is lift up that top

cover, the whole bag,

nothing is emptied, goes in there.

Turning the handle pushes

the bag into the machine,

where the poo is broken down

by microbes, and this produces

methane and carbon dioxide,

which fuels the light.

The lamp is a big hit in Brian's

village, and he's hoping that this

machine can bring poo power to other

parts of the country.

Looks like it wasn't such

a pants idea after all!

Next, 2017 saw so many brilliant TV

shows hit our screens,

but which ones did British viewers

love the most?

Well, the results are in.

And the winner is...

Hidden beneath the waves,

right beneath my feet,

there are creatures

beyond our imagination.

Yes, Blue Planet 2

was the most-watched

TV show of the year.

A chart-topping 14 million

people saw episode one

of the wildlife series,

which included dramatic footage

of walruses fighting to find a home,

and dazzling scenes

of surfing dolphins.

Second place went to

Strictly Come Dancing.

13 million people watched the final,

which was won by actor Joe McFadden

and his dance partner Katya.

Close behind in third place

was ITV's I'm a Celebrity,

Get Me Out of Here!,

which attracted an audience of 12.7

million for its launch episode.

Britain's Got Talent

and the New Year's fireworks made

it into the top ten,

but 2016's top TV show

The Great British Bake Off

missed out completely.

The delicious baking contest did

still bring in millions of viewers

after moving to Channel 4

and changing its judges

and presenters.

Let's hope 2018 is packed full

of even more incredible TV moments!

Newsround missed out on the top ten

once again! Maybe this year...

Sticking with TV now and meet one

of the stars of a brand

new BBC nature documentary

which starts tonight.

I've been taking a look.

Meet the world's smallest cat.

No, this isn't a kitten -

it's a rusty spotted cat

and lives in Sri Lanka.

They weigh little more

than a bag of sugar,

around 200 times lighter

than a lion.

Almost fully grown, this cat can sit

in the palm of your hand.

And while he might look

cute, this furry fella

is a pretty fierce hunter.

They look similar to their furry

cousins, the domestic house cat,

but the rusty spotted cousin has

hardly ever been filmed

like this before.

It's one of the stars in the BBC's

new wildlife documentary Big Cats.

Hang on a minute, shouldn't

they have called it Small Cats?

That's your lot for today.

Have a great day at school.

See you later.