if we found alien life what do you think it would be like and why?

If we found alien life what do you think it would be

like and why?

Alien Life

Aliens

Independence Day

War of The Worlds

Master Yoda

Superman

Alien

ET

Dalek

Men In Black

Monsters Vs Aliens

Avatar

Cowboys and Aliens

Out of the 200 billion stars that make up our galaxy, which is just one of a 100 billion galaxies, what is the chance that we are the only life?

Are we alone in the universe?

Time to imagine…• Imagine you are an alien,

looking down at Earth from your spaceship… –How would you know that life

exists on Earth?

How Will We Know?• Changes to the

atmosphere.• We may receive signals

from space.• Our space probes may find

life.

Conditions For Life•Water•Energy (sunlight)•Oxygen

Searching for Life on Mars• Viking landers – 1976.• Space probes• Rovers

VoyagerLaunched August 20th 1977

Now On it’s way out of the Solar System

Exploring the Solar SystemYou need to know these examples!

• Lander-unmanned vehicle lands on the surface of another planet or moon.

• Probe- unmanned spacecraft – goes into orbit around another planet or moon

• Rover- unmanned vehicle fitted with wheels and an engine – can move around on the surface of another planet or moon

Telescopes

• Telescopes on earth are usually positioned high above sea level, this is because the earths atmosphere contains clouds and pollution which effects the quality of the image.

• Putting telescopes in orbit can prevent this problem completely.

SETI• SETI – Search for

Extraterrestrial Intelligence.

• What is it??

S.E.T.I.The Search for Extra-Terrestrial Intelligence (SETI) uses a vast array of radio-telescopes to scan for signals from outer-space.

The Allen Telescope Array, California, USA

TED Talk from Jill Tarter – Director of SETI

The WOW! Signal

• The Wow! signal was a radio signal detected by Dr. Jerry Ehman on August 15 1977, while working on SETI.

• To this day, no one knows what caused the signal…

SETI@home

• SETI generates so much data they need your to help analyse it.• SETI@home is a free program you can download that analyses data

for signals.• Download it from setiathome.berkeley.edu