if we found alien life what do you think it would be like and why?
TRANSCRIPT
If we found alien life what do you think it would be
like and why?
Alien Life
Aliens
Independence Day
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