First off, why is earth habitable? The earth is the right distance away from the sun and it has all the thing's needed for life: water, an atmosphere, carbon.

There are lots of ways for humans to destroy earth one of these are pollution there are 7 types of pollution

These include air, water, land, radioactive, thermal, light, and sound pollution.

Pollution is becoming very common everywhere nowadays and a lot of scientists are researching pollution to find more info about how the Earth can be saved.

As you know, Earth is polluting by the minute and if we don’t fix earth or leave it we might go extinct.

Pollution has become very common on our planet, scientists keep telling us people need to stop using harmful materials that destroy our planet but we still keep using them.

A lot of things that are good for humans set off pollution.

Cars spew pollutants from their exhaust pipes, burning coal to make electricity is one of the many reasons there is pollution.

As the earth is polluted we need to leave it or fix it. In our PYPX we are going to talk about our other choice of leaving Earth.

The search for other planets like Earth is just starting. The ultimate goal for NASA’s exoplanet is to find unmistakable signs of life beyond Earth, although it's going to be very expensive it may benefit humanity. Fun fact: did you know that the youngest person to go to Space is Gherman Titov and he was 25 years old when he went to Space.

If we won't go beyond our solar system, why don't we go to Mars?

Mars is a cold desert world. It is half the size of Earth. Mars is sometimes called the Red planet. It's red because of rusty iron on the ground.

Like Earth, Mars has seasons, polar ice caps, volcanoes, canyons, and weather. It has a very thin atmosphere made of carbon dioxide, nitrogen, and argon.

Mars has the largest mountain named Olympus mons, no other planet has captured our collective imagination quite like Mars.

Finding other planets to live on may not mean we’re leaving our responsibility of protecting the earth; we might learn a way of saving the earth by leaving it.

Finding planets beyond our solar system is with 5 different ways the first is radial velocity the second way is transit and the third one is direct imaging the fourth one is gravitational microlensing and the fifth is astrometry.

Radial velocity (watching for wobble):

The gravitational pull of a planet causes a star to wobble around in its orbit, and as the planet moves back and forth, light waves compress together and then stretch out, changing the colour of the light we see.

Transit (searching for shadows):

Imagine an eclipse but with the planet and the star, the planet will go in front of the star blocking its light and showing itself to scientists to observe.

Direct imaging (taking pictures):

Astronomers can take pictures of exoplanets by removing the overwhelming glare of the stars they orbit.

Gravitational microlensing(light in gravity lens):

scientists analyze how the gravity of an object can alter the fabric of space.

Asytometery (minuscule movement):

Astrometry is when scientists monitor the movement of stars to track and find other planets. The gravitational pull of a planet will cause it to move or wobble. This movement is detected by scientists and will help them to track other stars or planets around it.

With these 5 methods, we find planets beyond our solar system. The nearest one to us is Proxima b and we are 4.24 light-years away from it. Its orbit is 11 days, if technology improves we might be able to go there one day in the future...