2. HOW MANY OF YOU BELIEVE IN ALIENS ? By the end of this
presentation , I hope all of you start believing in Aliens.
3. QUESTIONS IN YOUR MIND :- Do they exist ? Where they live ?
How do they communicate ? What are their genetic code &
DNA?
4. INRODUCTION In addition to the biochemical basis of
extraterrestrial life, many have considered evolution and
morphology. Science fiction has often depicted extraterrestrial
life with humanoid or reptilian forms. Aliens have often been
depicted as having light green or grey skin, with a large head, as
well as four limbsi.e. fundamentally humanoid. Other subjects, such
as Felines, insects, blobs, etc., have occurred in fictional
representations of aliens.
5. FACTS Ever since people have started observing the sky,
there has been the question of whether we are alone or not. Frank
Drake, the scientist who invented the Drake equation which is an
equation to find the number of civilizations in our galaxy,
estimates that there are 10,000 communicating civilizations in our
galaxy alone. NASA estimated in 1999 that there were 125 billion
galaxies in our universe. Very conservative estimates say that
there are approximately 6.25 billion life supporting solar systems
in the universe. It is very probable that there is a least one
planet out there that is currently supporting life.
6. ALIEN Extraterrestrial life that does not originate from
earth. it is also called alien life. These include hypothetical
forms of life range from simple bacteria like organism to being far
more complex than humans. The development and testing of hypothesis
on extraterrestrial life is known as exobiology or
astrobiology
7. WHAT IS LIFE ? The condition that distinguishes animals and
pants from inorganic matter , including the capacity for growth ,
reproduction , functional activity , and continual change preceding
death.
8. INTELLIGENT LIFE IN MILKY WAY Milky way galaxy contains an
estimated one trillion planets. Billions of these planets are earth
size and in the habitable or so called goldilocks. Radio and
television signals from Earth have been leaking into space since
the middle of the 20th century. Traveling at the speed of light,
the first broadcasts from Earth are 65 light years away from our
world. The first episodes of "Star Trek," broadcast in 1966, are
just now reaching Alpha Cephei, 48 light years away. Many SETI
programs are listening for similar signals leaking into space from
distant worlds. scientist believes aliens are likely to use more
direct methods of communication, such as tightly focused
beams.
9. DOES ALIEN LIFE EXIST ? 5 Bold Claims of Alien Life Microbes
in Meteorites NASA scientist Richard Hoover published a paper March
4, 2011, claiming to have found fossil evidence for cyanobacteria
in carbonaceous meteorites from outer space. Observed slices of
meteorites through scanning electron microscopes, and identified
filaments and structures that he said resemble the tiny
single-celled algae.
10. Arthur C. Clarke's Bushes on Mars Credit: NASA Science
fiction author Sir Arthur C. Clarke, famous for penning the novel
"2001: A Space Odyssey," made headlines in the year 2001 when he
claimed that recently returned photos from NASA's Mars Global
Surveyor showed evidence of trees and bushes on Mars.
11. Allan Hills Meteorite When scientists announced in 1996
that they'd discovered evidence of fossilized microbial life .
Subsequent analysis of the research, on a meteorite called Allan
Hills 84001(ALH 84001), produced controversy a meteorite from Mars.
The evidence is still debated, and the space rock remains a topic
of ongoing research.
12. Mars Canals The idea that Mars was traversed by a complex
network of canals was first put forward in 1877 by Italian
astronomer Giovanni Schiaparelli, and later popularized by
astronomer Percival Lowell. Lowell made intricate drawings of what
he took to be canals based on observations he made at his
observatory in Flagstaff, Arizona.
13. Viking Lander Results In 1976 NASA's two Viking landers
touched down on the surface of Mars. The probes conducted a host of
biological experiments, including collecting samples of Martian
soil to test for organic compounds the building blocks of life and
biosignatures that could indicate the presence of
microorganisms
14. SEARCHING FOR ALIENS The search for extraterrestrial
intelligence(SETI) is based at university of California in Berkley
and has several radio telescopes that are dedicated to listening
out signals from alternative life form. To detect ET civilizations,
we must identify an artificial, coherent signal that produce radio
waves, the telescope capable of this include Arecibo telescope in
Puerto rico. Allen telescope array in hat creek,california
15. CONTINUE Project Cyclops was commissioned by NASA in 1970s
to investigate the signals ETI. IN 2006,European space agency
launched the kepler space observatory. it discovered 1901 confirmed
exoplanets. SEVENDIP(search for extraterrestrial visible emissions
from nearby developed intelligent populations) at university of
California are using electromagnetic spectrum to search ET
signals.
16. COMMUNICATION WITH EXTRATERRESTRIAL INTELLIGENCE(CETI) It
is a branch for the search of extraterrestrial intelligence that
focus on composing and deciphering messages that could be
understood by another technological civilization. In 2010,general
purpose binary language used in lone signal project to transmit
crowdsourced messages to ETI. Two pioneer probes (pioneer 10 &
11) was launched in 1972 & 1973 depicting the location of earth
and form of human body. In 1977,voyager probes were lunched with
two golden records that were inscribed with diagram depicting human
form & sound from earth.
17. CONTINUE The Arecibo message transmitted in 1974 was a 1679
pixel image with 73 rows and 23 columns. it shows double helix
structure of DNA,figure of human beings, our solar system,etc.. The
cosmic call messages included bilingual image
glossary,text,video,audio .the message is designed with noise
resistant format. These messages were sent in 1999 and 2003 from
evpatoria planetary radar. In 1974, they beamed their own signal
out into space from the Arecibo telescope in Puerto rico
18. ARECIBO ALLEN
19. 1 2 3
20. CONCLUSION Despite the huge number of sightings ,abductions
and government sponsored cover ups that have allegedly taken place
over the years, there is no proof that alien life forms exists.
with the latest calculations that have extended the goldilocks
zone, the area where life could happen around stars. And then add
the fact that life happens spontaneously, even under the most
extreme conditions, and the idea of a Milky Way thriving with life
is impossible to deny. There's no doubt that, statistically,
there's life out there.