how are we looking for life on other planets.?

Question

I need to know really soon!!! true awnser please this is for a school asimment!!!!!!
thank you!

Answer 1

Analyzing radio signals from space. That's what SETI does, and that's what your computer is doing when it runs SETI@Home, searching for patterns in radio signals.

Also examining rocks on other planets, particularly Mars, with the help of the Mars Rovers.

Answer 2

we are looking for life that resembles ours...life that has the same elements required to survive, namely oxygen,water and the environmental conditions that can sustain human life. The presence of such elements can be known by studying the spectrum received from seen planets and locating the lines on that spectrum that are radiated by each element, it is called the fingerprints of matter.The second method deployed is the inspection of the x-rays emmitted from a far planet,as done by space observatories"Hupple",and indicating the present elements accordingly. The costly method of sending space probes that take and analyse samples is impractical as it needs a long time of travel,complicated technologies for remote control and programming, as well as the high propability of loss. We should always remember the difficulty of observation in a very crowded universe,and the limitations of knowledge.

Answer 3

Radio Telescopes are scanning the sky. Since there are millions of frequencies which could be broadcast on, and a lot of cosmic radiation noise, we broadcast and scan on what's known as the water hole. Basically, a relatively clear bandwith in the microwave band, which coincides with the frequency of water. If E.T. is sending out a calling card, this has been considered the most likely area to focus our search.

Answer 4

I hope you improve your spelling for the school assignment.

Two rovers on Mars have been taking samples - no indication of life, but it is believed there is sub-surface water, so primitive life could be there.

A meteorite from Mars was supposed to have simple organisms in it, but other scientists think that it may have got contaminated on Earth.

Saturn's moon Titan is believed to have a sub-surface ocean that may be warm enough from the moon's interior to be liquid and so a possible source of life.

Astronomers Hoyle and Wickramsinghe believe that inter-galactic dust contains simple bacterial life forms that seed life on planets through the periodic (over millions of years) crash of comets. It is worth reading some of their stuff. Many other astronomers don't go along with it, but there are the chemicals of life, in these dust clouds (for example, simple amino acids), even if there aren't actual living things. Nobody disputes that, as they are detected with the spectroscope.

The problem is that if there are life chemicals, nobody knows how living things spring from them. But Hoyle and Wickramsinghe reckon the simple life forms may have always been around in the universe (they don't go along with the Big Bang theory)

Answer 5

Basically, outside of our solar system, we are listening for pattern from the sky that may be radio signals. The problem is that radio signals can only go the speed of light. Therefor, The makers of such a signal may have become extinct or evolved beyond the use of radio signals by the time they reach us. Nevertheless the information will tell us, beyond a doubt, there is more intelligent life out there. There is no way to tell, outside of our solar system, if there is primitive life out side our solar system is impossible to tell at the present level of technology.

Answer 6

Whoa! I think the true problem here is your education. You should learn how to spell assignment; it seems to indicate you take your opportunity of education lightly. Don't waste your mind, it's the only thing you really have!

Please, do a google search. By reading stuff on your own, you'll be able to answer intelligently instead of just copying and pasting an answer from here.

Answer 7

Well, I can't speak for life on other planets, but but I would say we're not so good. :D

Seriously look up SETI. We use remote sensing devices to monitor radio waves in the universe, we have sent probes to several planets, and we keep the light on at Roswell.

Answer 8

Basically by by sending instruments that can detect the presence of water in the other planets. Presence of water would be an indicator to presence of life.

Answer 9

It is being done by scanning the radio frequencies for transmissions from a civilization that is realisticly advanced enough to use radiowaves as a means for transmission.

Answer 10

Scientists are going to start searching for television and radio waves in 2008.