We all love talking
about the weather.
Is it too hot,
or is it too cold?
It's a national obsession.
But now scientists
have also started
looking to the heavens...
And wondering what the weather
might be like on other planets.
We are witnessing the birth
of extraterrestrial meteorology
as technology is
allowing astronomers to study
the weather on other planets
like never before.
And our exploration
of the universe
is revealing alien worlds
with weather far stranger
and more extreme than anyone
could ever have imagined.
We thought we had
extreme weather on earth,
but it turns out that
it's nothing compared
to what's out there.
And the search for the weirdest
weather in the universe
is only just beginning.
Captions by Vitac...
www.Vitac.com
captions paid for by
discovery communications
It's a warm spring morning.
And astronomers are
experiencing a rare event.
They're looking through
their telescopes
in the middle of the day.
It's a chance to get
a unique perspective
of one of our nearest neighbors.
To take a closer look,
astronomer Tom Kerss
has set up the great Equatorial
telescope in London
to look at the sun
for the first time since 1927.
At exactly 12 minutes
past noon,
the planet Mercury
will pass in front of the sun.
So here is Mercury
emerging onto the face
of the sun,
looking very beautiful indeed.
Mercury will gradually slink
across the face of the sun
as it overtakes us on the inside
track in the solar system,
about 52 million miles
away from the earth right now.
Since we've known about
the existence of other planets,
we've wondered what
these mysterious alien worlds
are like.
Could they be home to life,
and is there any way
of finding out?
So we've been wondering - whether other planets
might be habitable or not.
The key question that we need
to ask to begin with is,
- what is the atmosphere - actually like?
- What is the climate like? - What's the weather like,
whether it be very extreme
- or whether it be - quite pleasant and stable,
the kind of weather that we
think is necessary for life?
So what will the
weather be like on Mercury?
If we look back at the beginning
of the Mercury transit,
we can see a really clean bite
taken out of the sun.
And the edge is so clean because
Mercury doesn't have
any appreciable
atmosphere to speak of.
With no real atmosphere,
Mercury is effectively
a dead and barren world.
Because Mercury lacks anything
- that we would call - an atmosphere,
there's essentially no weather
on Mercury at all.
Cloudy with a few sunny breaks
- and not as warm tomorrow - with a high of 53.
Mercury is unique - in our solar system
because all the other planets
do have atmospheres
and, therefore,
also have weather.
Death valley, California...
One of the most extreme
and alien environments on earth.
Planetary explorer
Suzanne Smerkar has come here
because it shares
a surprising similarity
to our nearest neighbor, Venus.
Venus is the brightest object
in the night sky.
- And the reason - it's so bright is
because it's covered
in thick clouds.
And, when you turn
your telescope to it,
you can see nothing
of the surface.
It's kept it
shrouded in mystery.
Because Venus is
similar in size to earth
and also relatively
close to us,
astronomers once believed
it would have a climate
much like ours.
We used to think
- that Venus was much - like the earth,
maybe 50 degrees hotter
- because it's that - much closer to the sun.
- We thought it had - an atmosphere like the earth.
We thought it would be cool
enough to have oceans.
We even thought it was covered
in steamy, hot swamps,
probably covered
with verdant green life.
[ Man speaking
To discover what Venus
was really like,
we needed to go there.
In the late 1960s,
the Russians succeeded.
- The one that finally made it - to the surface
was Venera 7 in 1967.
And that probe fell gently
through the atmosphere,
got to the surface
and survived
for only about 2 hours.
Before they died,
the Venera probes
revealed the true
nature of Venus' climate.
Temperature of 462 Celsius,
- which makes it the hottest place - in the solar system.
- And the atmospheric - pressure on Venus
is almost 100 times
that on the earth.
With surface temperatures
of over 860 degrees Fahrenheit,
an oppressive atmosphere
of carbon dioxide
and belching clouds
made of sulfuric acid,
Venus is a planetary
vision of hell.
We knew, for the first time,
that Venus is not a swampy,
verdant region
teeming with life,
but, instead, it's a hellish,
hot inferno.
Venus is the hottest
planet in the solar system
even though it isn't
the closest to the sun.
Sue has come to death valley
where the unbearable
temperatures are created
by the same phenomenon
at work on Venus.
We're here today - in death valley,
the hottest place on earth.
The highest
temperature ever recorded here
was 134 degrees Fahrenheit.
But, today, it's a cool 108.
The reason it is so hot here
is that we are below sea level.
That means that we have
additional atmosphere.
Death valley is
282 feet below sea level.
So there's that much more
atmosphere
above the valley floor.
And that means
it's higher pressure.
And that extra bit of pressure
is really what's giving us
this intense heat
that we're experiencing today.
It's like adding another layer
of insulation or another blanket
that's holding the heat in.
By simply driving uphill,
sue reveals the tremendous
insulating power
of the atmosphere.
It's already looking greener
and a bit cooler up here.
At Dante's view,
about a mile above
the valley floor,
the temperature
is only 86 degrees
compared to the 108 down below.
On earth, the temperature
typically increases
by about 44 degrees Fahrenheit
for every 1/2 mile you descend.
On Venus, with its much
deeper atmosphere than earth,
this insulating effect
is taken to its extreme.
- It is so much - hotter in Venus
because the pressure
is at 92 bars,
almost 100 times
that on the earth.
And the atmosphere is
much thicker, much denser,
- and it really holds - that heat in,
making Venus the incredible
inferno that it is.
On top of this,
Venus' atmosphere
is almost entirely made up
of the greenhouse gas
carbon dioxide.
And this combines
with the intense pressure
to make Venus the hottest planet
in the solar system.
But in a universe where there
are gigantic superstorms
and Ruby rain,
could this be the mild end
of weird weather
across the stars?
While Venus brings the heat,
earth's closest neighbor
is its polar opposite.
So Mars is the
opposite extreme from Venus.
Its atmosphere is 1/100
the pressure of earth's.
And an effect of having
that really low
atmospheric pressure on Mars,
means that it can't trap
any of its heat.
So Mars is a cold,
barren desert compared
to earth or to Venus.
Because of this thin atmosphere,
Mars is home to some spectacular
weather phenomena,
like its enormous dust storms
which dwarf those on earth.
In the thin - atmosphere of Mars,
the dust storms can get
to a very high elevation.
They can reach over
12 miles into the atmosphere.
And because most of Mars
is a dry, dusty desert,
these dust storms
can cover vast expanses.
In fact, it seems
there's no limit
to how far they can spread.
Every few years,
an enormous dust storm will grow
until the entire planet
is engulfed.
Incredibly, storms like these
have been shown to envelope
the whole planet
for as long as 2 months.
- The forecast, - plenty of sunshine
- through today with - seasonal temperatures.
- We should reach - our normal high...
Further out in the solar system,
the weather gets even Wilder.
It's another fine,
sunny day in Pasadena,
home of NASA's
jet propulsion laboratory.
Andrew Ingersoll is the father
of extraterrestrial meteorology.
He's come to the deep
space operations center.
It's mission control
for the small fleet
of spacecraft that NASA
has sent to explore
the outer reaches
of the solar system.
Andy has worked
on all these missions.
So we've had a whole series
of spacecraft visiting
the giant planets.
The first big one
was voyager in the '70s,
which zoomed past
all the giant planets.
Then, there was Galileo,
then Cassini,
which has been in orbit
around Saturn for 10 years.
And now we have Juno
in orbit around Jupiter.
The spacecraft had
given us an unprecedented view
of the weather
on these planets.
The outer planets
are big balls of gas,
and that makes a huge
difference in the weather.
So there's lots of room
for weather.
And because you don't
have continents,
you don't have mountains
for the winds to rub against,
and there's nothing
to control the weather
the way the continents partly
control our weather.
This means that
these planets have storms
on an entirely
different scale to ours,
and the most famous storm
of all
is Jupiter's great red spot.
The great red spot
is a huge storm
in Jupiter's atmosphere.
You could put two earths
inside the red spot.
And the winds going around
the periphery of the red spot
are about three times the speed
of the earth's jet streams.
With winds whipping around
at about 400 miles per hour
and releasing
so much energy
that it heats
the atmosphere above it
to over 2,500 degrees
Fahrenheit,
the red spot has been raging
for as long as we on earth
have been able
to observe Jupiter.
Shortly after Galileo
built the first telescope,
people were using these
primitive telescopes
to look at Jupiter,
and they saw this storm.
And it's apparently
been there ever since,
which is remarkable compared
with earth's storms.
The red spot has been there
for over 350 years,
and that makes it
the longest living storm
that we know of.
Jupiter may have
the longest lasting storm,
but it's Saturn,
the next gas giant,
that is home to the largest
and most powerful storm
ever seen in the solar system.
And, in 2010,
the Cassini spacecraft
is there to see it.
Saturn, of course,
is a spectacular sight
because of the rings
and it's also
rather boring as far
as the weather is concerned.
It's a bland thing.
But, every now and then,
20, 30 years,
Saturn erupts
with a giant storm.
And Cassini was fortunate
to be orbiting Saturn
at the time
of one of these eruptions.
What happened was,
on December 5, 2010,
the radio receiver on Cassini
started picking up
the radio signal of lightning.
And, on the same day,
the camera saw
a little storm up
in the northern
hemisphere of Saturn.
By January, it had developed
into a fair-sized thing.
And then, we watched it
for six months.
During that time,
the huge storm grew
and wrapped itself
around the entire planet,
covering over 1 1/2
billion square miles
until its head caught up
with its tail...
Driven by winds going around
1,100 miles per hour
with huge lightning flashes
10,000 times stronger
than those we get on earth.
It's very funny.
Jupiter has these
very long-lived storms.
But Saturn has these
very violent storms.
We don't fully understand
why there's this difference
in the weather
between Jupiter and Saturn.
Whether it's duration or size,
the storms on both these planets
dwarf those on earth.
However, because
they receive far less heat
- from the sun - than the earth does,
something else is also
powering their weather.
The weather on Jupiter
- and Saturn comes - from two sources.
One is the sun, as on earth,
and the other is
the internal heat left over
from when the planets formed.
It's this internal heat
trying to escape through
their deep atmospheres
that makes the gas
planets so tumultuous.
The storms on the gas planets
are certainly weirder
and Wilder than anything
we have on earth.
But when it comes
to the clouds and the rain,
things get even stranger.
It's a typical June
morning in Southern California.
- And a local weather - phenomenon,
known as the June gloom,
makes it the perfect day
for taking a closer look
at the clouds.
- Dr. Kevin Baines - has a passion
for the skies
on earth and beyond.
And he's been studying
the clouds on the gas planets.
Sirrus five
coming out of Socal.
- We're going to make - a left turn on Alpha and taxi
over the run area
for runway one.
- So, on a planet, - you'll get clouds
at different levels depending
on the local temperature
and the local pressure.
On earth,
all clouds are made of water.
So, in Southern California,
we have this marine layer.
What happens is it
actually forms over the water.
The pacific ocean, of course,
has a lot of water.
So, during the day, it heats up
and releases water
into the air as water vapor.
And, as this water
vapor rises, it cools,
and then it condenses out
as water droplets in the air.
- And when you get millions - and millions of water droplets,
it forms a cloud.
Clouds will form
- wherever - it gets too cold for water
to stay as a vapor
in the air.
And if there's enough moisture,
the cloud droplets grow in size
until they're big and heavy
enough to fall as rain.
Jupiter and Saturn also
have a layer of water clouds.
- If we were to - transport ourselves
magically to Jupiter or Saturn,
we could find
a water layer like this.
But other substances
form clouds
at colder temperatures.
- So, above the layer - of water clouds,
higher up in the atmospheres
of Jupiter and Saturn,
there are two more cloud layers.
As you climb up - out of the water layer,
it gets so cold that, first,
you get ammonia hydrosulfide,
which is a very exotic cloud
made of both ammonia
and sulfur put together.
- And then, as you climb up - even higher into the atmosphere,
when it gets down to about minus
200 degrees Fahrenheit, there,
ammonia gas in the atmosphere
condenses out and forms clouds.
So, on these planets,
it doesn't just rain water.
There could also be
a light rain of liquid ammonia.
- Now, if you go out - to Uranus and Neptune,
it is so cold out there,
around minus 300 degrees,
that now you even have methane
gas come out as clouds.
And so, on Uranus and Neptune,
liquid methane could
fall from the sky.
Bizarre as they are,
ammonia and methane aren't
the weirdest rains of all
because, back on Saturn,
in the depths of its atmosphere,
Kevin believes that
an astonishing process
is at work that creates
what could be
the strangest rain
in the solar system.
This process can be witnessed
on an idyllic summer day
in Oxfordshire.
Inside this unremarkable
office building,
a manufacturing company
- is replicating - the conditions
deep in Saturn’s atmosphere,
not to study it,
but for industrial purposes.
Using these massive presses,
they're turning carbon graphite
into something
far more valuable.
And Kevin has come
over from California
to see how this process
can help explain
what's happening
deep inside Saturn.
We know that, on Saturn,
there's carbon soot.
- We know that by looking - at these dark clouds
that we saw with our camera
onboard the Cassini spacecraft
in orbit about Saturn.
And we see this spectroscopic
signature of carbon soot there.
The carbon soot is
created by lightning,
lightning actually zapping
methane in the atmosphere.
Something very strange
then happens to the soot
as it falls through
Saturn’s atmosphere.
It is transformed into
something remarkable,
a process that is actually
being replicated here.
Is we take this
carbon graphite.
Other materials,
and we assemble
what we call a capsule.
And we take that capsule
and graphite material
inside it,
and we place it inside
the actual press itself.
The press is then closed up,
and the carbon graphite
is exposed to extreme
temperatures and pressures.
High pressures are generated
by these anvils
that compress down
onto the graphite,
pressures of around
50,000 atmospheres.
- And the graphite's - then going to be heated
by large
electrical currents.
This heats it to over
3,600 degrees Fahrenheit,
mimicking what's happening
inside Saturn.
- We know we have carbon, which is - very much like the graphite
that we just put into
the machine over here.
The carbon soot precipitates
or falls through the atmosphere.
- And, eventually, it'll encounter - the same types of pressures
and temperatures
that we encounter inside
this press over here.
Inside the press,
the intense heat
and crushing pressure
transformed the carbon
from graphite into diamond.
All right.
- So this may not look - like diamonds,
- but we will then - take this rubble.
- And we will - process it further,
- and we'll extract - the diamond.
- Great, so the diamonds - are in there somewhere?
- Somewhere - inside this rubble,
Kevin,
there are diamonds.
This high-temperature,
high-pressure process
can make a variety of diamonds,
which are used in industry.
Here,
we have tiny triangles.
Effectively, these are used
for wire drawing dies.
And you get
square-shaped diamonds,
which in this case,
are used as single-crystal
cutting tools.
These diamonds are yellow
because they contain nitrogen.
So what we were making
earlier today, effectively,
are these diamond grits,
tiny, little stones
of single-crystal diamond.
They're normally about
100 microns in size.
Kevin believes the same thing
is happening on Saturn.
- So we really think - it's very similar conditions,
very similar process
that's happening in Saturn.
Carbon soot will transform
itself into diamonds,
creating a diamond rain.
As the carbon soot
falls from the clouds,
the extreme temperature
and pressure
deep in the atmosphere
turn it into diamonds.
So, inside Saturn,
we have a huge region
of diamond rain.
Our exploration
of the other planets
in the solar system
has revealed weather stranger
and more powerful than anything
we have here on earth.
But what about beyond
our solar system?
What is the weather like
in the rest of the universe?
Rain tapering off - tomorrow afternoon,
followed by partial
clearing and a high of 61.
In their grand search - to document weather
across the stars,
scientists have figured out
how to use infrared
light to work out
just how hot a planet is.
So the main thing - that determines
- the temperature of a planet - is the distance
that it is
from its host star.
Planets that are really close
in are going to be boiling hot.
Planets that are further away
will be a little bit
cooler by comparison.
Most of the exoplanets
discovered so far
are close to their stars.
So scientists expected
them to be hot.
But they didn't know how hot.
So we can actually - go and measure
- the temperature of these planets - by measuring their brightness
and infrared light.
- Hotter things are going - to glow more brightly
at infrared wavelengths.
Cooler things are going to be
a little bit dimmer and fainter.
So probably the hottest planet
that we know of is
a planet called wasp-33b.
Wasp-33b is the hottest planet
discovered so far
in the entire universe.
It's a gas giant, 4 1/2 times
the size of Jupiter.
Its atmosphere is a scorching
near-5,800 degrees Fahrenheit.
So this planet is hot - for two reasons.
One is it's very close
to its host star.
- The other reason - is that it orbits a star
which is bigger
and hotter than the sun.
- Both those things - together combine
- to make this - one of the hottest planets
that we've discovered.
Planets like wasp-33b
are nicknamed hot Jupiters.
And they don't just have
extreme temperatures
because being close
to their star
has another important effect
on the weather.
So all planets spin
on their axis
just like I am now.
As the earth spins
once every 24 hours,
but not all planets
spin at the same speed.
There are some planets,
which we're discovering,
which are very,
very close to their stars.
They're so close that
the star tugs on the planet
as it spins around on its axis.
And the tugging of that star
actually slows
the planet's rotation down,
keeps slowing it down
and keeps slowing it down
until the planet rotates
at exactly the same speed
that it orbits.
So the same side of the planet
always faces towards the star
just like I'm always facing
the center of this ride here.
So we call this tidal locking,
and it means that the planet
has a permanent day side
and a permanent night side.
And being tidally
locked has a dramatic impact.
So, whenever you have - one part of a planet
that's hot and another
part that's cold,
- the natural result - is that you get a wind moving
from one part to another.
- Here at the beach, - during the day,
the land heats up,
- but the sea stays - relatively cold.
- And so you get this - nice wind moving
from the ocean towards the land
that's trying to even
out the temperatures.
So, when we first discovered
- these very close-in planets, - we realized
that they probably close
enough to be tidally locked.
- And one of the very first things - we wanted to know
is what that meant
for the planet's atmosphere.
- So did it mean - that these planets
had a boiling-hot day side
and a freezing-cold night side
- or were there winds - in the atmosphere
- that were able to carry - some of that heat
around to the night side?
To find out,
Heather mapped the temperature
on a hot Jupiter,
which scientists think
is blue in color.
- The particular planet we decided - to look at
was a hot Jupiter
called hd 189733.
- Now, that's kind of a mouthful, - but I can tell you
- that this is actually - my favorite hot Jupiter.
- This was one of - the very first planets
that I looked at
when I was a grad student.
By looking at it in infrared,
Heather was able
to measure its temperature.
So this is the map we made.
- So the color tells you - the temperature
- of different parts - of the atmosphere.
So here, on the day side,
things are relatively hot.
On the day side,
it's 1,600 degrees Fahrenheit.
Here, on the edges,
that's the night side.
And that's a relatively
cool part of the atmosphere.
On the night side,
it's just 1,300 degrees.
That difference is actually
much smaller than we expected.
And the fact that it's so small
suggested to us that this planet
must have strong winds
- circulating through - its atmosphere
and carrying that hot air
from the day side
around to the night side.
Incredibly,
these winds
have now been measured directly.
And it turns out
that hd 189733 B
is home to the fastest
winds in the universe,
which rage around
5,500 miles per hour,
seven times the speed of sound
and 20 times faster
than the fastest winds
ever experienced on earth.
But could exoplanets be home
to even weirder weather
where raining rubies
is the norm?
With winds out of
the west of 22 miles per hour,
it's currently 80 degrees.
It's a beautiful, - tropical morning
on the big island of Hawaii.
And exoplanet expert
Hannah Wakeford
is taking to the skies
to explore
another bizarre effect
the extreme heat on exoplanets
has on their weather.
The strangest - thing about exoplanets
is the clouds and the rain.
They're nothing like
what we have here on earth.
Spectroscopy has revealed
that exoplanets have clouds
and also what these clouds
might be made of.
- We know that exoplanets - have clouds.
- If we have a planet - that we know should be gaseous
- because of its density - but we don't detect
any spectral signatures
from that gas,
then we think there
must be clouds in the way
which are blocking that light
and obscuring our view.
- And, sometimes, - we can detect signatures
directly from those clouds
by the way that they scatter
or reflect the light.
But these aren't
clouds we'd recognize.
- Dr. A lot of the exoplanets - that we've been able
to follow up are very hot,
over 1,000 degrees.
- So we know that water - can't exist
- as a liquid - at those temperatures.
- So there are not - going to be clouds
like we have here on earth.
Whoo, we're in a cloud!
So, on some exoplanets,
the clouds will be made of
far more exotic substances.
Temperatures
are such that substances
that we think of
as solids on earth
can actually exist as liquids
or gas in exoplanet atmospheres.
We can get a glimpse
of this on earth in volcanos
where temperatures can reach
over 1,800 degrees Fahrenheit.
Down there is the crater
of Puʻu ʻŌʻō.
And you can see
the lava bubbling away.
The temperature
of this lava lake is such
that all of the rock has melted.
The metals, the minerals
and the silicas
that make up the earth's crust
have all become molten.
It's amazing.
- You can really feel - the temperature
from the lava lake
all the way up here.
It's really very hot.
It's melting the earth's
crust down there,
so it's no surprise.
And it's these substances
that are thought to make up
the clouds on some exoplanets.
There's a planet
called 55 Cancri E
that we think is rocky
because of its density.
But it orbits very close
to its parent star,
and it's tidally locked.
So temperatures on the day side
- should be high enough - to melt the rock,
making it a lava planet.
While its night side
will be relatively cool
and solid rock,
its day side is an ocean
of permanently molten lava.
And the temperatures reach
over 4,500 degrees Fahrenheit.
This is hot enough to vaporize
the rock at the surface.
This could then be lifted
into the atmosphere
and condense to form clouds
of liquid lava droplets
and then could be transported
to colder parts of the planet
where they'll rain down
as pebbles on the surface.
So, on some planets,
it rains rock
rather than water
like it does here in Hawaii.
Back on the ground on Kilauea,
Hannah has made an example
of what rock rain might be like.
Right here was the site
of a massive eruption.
All along this fissure,
fountains of lava
shot into the air.
The liquid lava droplets
then cooled and solidified
in the air before raining down
onto the surface
as these tiny pebbles.
- And, sometimes, - we get these perfect
little droplets
called pele's tears.
This is what we think the rain
might be like on planets
like 55 Cancri e.
But perhaps the strangest rain
in the entire universe
has been discovered
on a giant gas planet,
which orbits a star hundreds
of light-years away.
We've been able to study
the exoplanet wasp-12b.
And the way that it
scatters light suggests
that there are clouds
high up in the atmosphere.
Here, the temperature is
about 3,600 degrees Fahrenheit.
So the most likely substance
forming these clouds
is an aluminium oxide
called corundum,
which forms the basis of rubies.
So, instead of having rain,
which is liquid water droplets,
like here on earth,
it would be raining rubies.
We're only just witnessing
the birth of exoplanet
meteorology.
But, so far, what astronomers
have discovered on exoplanets
is even more extreme and bizarre
than anything anyone
had ever imagined.
But, in our search,
could a second earth
be just around the corner?
Compared to what's out there,
- the most extreme weather - on earth,
our hurricanes and tornados,
our rain and our snow
all seem pretty mild.
Our climate and weather
is actually very hospitable.
The earth is a nice place,
and that's all because
of the weather.
We've got warm temperatures,
not too hot and not too cold.
It's a great place.
Ultimately, the planet
hunters of the world
are hoping to find
one thing, another earth,
a small rocky planet
with a thin blue line
encircling it,
a planet with a nice climate,
a climate that could
be hospitable to life.
But the search for another earth
is still in its infancy.
Dr. Brice Demory
is a planet hunter,
and he may have found
the promised land
of planetary exploration,
a planet that could have warm,
mild weather,
weather just like
a lovely summer evening.
Could this planet
really be another earth?
As ever, this will depend
on its atmosphere.
- These planets - could have a barren,
frozen wasteland
on their night side,
a baking inferno
on their day side
and yet have a temperate
and potentially habitable
strip down the middle
where it's permanent twilight.
- To really know - if any of these planets
could be habitable,
we need to study
their atmospheres.
But they're too small
for even our best telescopes.
We've reached the limits
of our current technology.
But NASA is building
a new space telescope
called the James Webb,
which will enable us to study
the atmospheres of exoplanets
in far more detail
than is possible today.
With a mirror
21 feet in diameter,
it will have greater
light-gathering abilities
than its predecessor,
the Hubble space telescope.
The James Webb will
also be able to look
at a far greater range
of wavelengths.
When James Webb
launches in 2018,
astronomers will be able
to study earth-sized planets
and discover if they're
potentially habitable.
For thousands of years,
- we've gazed up - at the night sky
wondering what other planets
might be like.
Astronomers began by studying
our own solar system.
And now they're exploring
the wider universe
- and can even study the weather - on planets
hundreds of light-years away.
They've discovered climates
and weather
stranger than fiction,
alien worlds
with extreme temperatures,
bizarre clouds
and even Ruby rain.
But they've yet to
find another planet
like earth with weather
that's suitable for life
that's not too hot or too cold.
So, for the time being,
it looks like a warm
and pleasant day on earth
with a gentle breeze
and a slight risk of rain
might actually be the weirdest
weather of them all.