Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Extra-terrestrial life:
Just as we have been curious about how life originated on the Earth, we have also tried to explore whether there is life on any other planet in the Solar System or elsewhere in the universe. Explorations of outer space carried out by spacecraft and ground based observatories, in recent years, have led us to the conclusion that in the entire Solar System, the planet Earth is, perhaps, the only place where there is life. The other planets are at such a distance from the Sun that they are either too hot or too cold for life toexist. The one close possibility is the planet Mars. Space probe Viking collected and analysed samples of rock and soil from Mars to detect the presence of life. But so far no conclusive evidence of any life, present or past, has been found on this planet. Man is also looking for life beyond the Solar System. Two approaches are currently available to him; either to send a man or an instrument to a particular star in the Universe and examine local surface for life or to listen to the signals from outer space which may come in the form of radio waves. With our present technology, the first approach does not take us beyond the Solar System.
The second approach is based on the assumption that there may be civilisations technically as advanced or even more advanced than our own. So we can exchange radio messages with them. We have drawn a blank so far on this front. But it is quite possible that our galaxy, the entire system of dust, gases, and stars within which the Sun moves, is already filled with chatter between the far older and more advanced civilisations! These signals may havc been transmitted b) a technique still undiscovered on Earth, so we may be nlissi!?g them altogether! Recently it has been reported that astronomers have found sornc other stars, like our Sun, which have planets. If this is provcd to be true, there may bc millions of planetary systems in the Universe, increasing the likelihood of lifc cxisting on some of them.
Are there living beings without cells?
What is a chemical formula? A chemical formula is a way of representing molecules without drawing them. The chemical formula shows the ratio of atoms that form any given molecu
Soil Types of India Soils were classified as urvara (fertile) and anuvara or usara (barren) in the ancient period. The soils were then given local names by cultivators like, M
PROCEDURE : Your Counsellor will be performing the following experiments. You are advised to observe the disposal methods carefully. Experiment 1: Test for studying miscibility
why does water erupt from geysers?
For highly volatile liquid wastes Highly volatile liquid waste could be disposed of by effective ventilation until the liquid completely evaporates. Example: Diethyl ether.
diseases caused by viruses?
Determine the term - soil moisture The higher the soil moisture, the more rapid is the rate of reaction. The quantity of liming material to be applied to raise the soil pH to a
Making a simple reflecting telescope A simple reflecting telescope can be made from a concave mirror obtained from a shaving mirror. The mirror is arranged wooden box of suitabl
Which latitudes and dates would coincide with the longest duration of insolation: 50oNorth on June 21
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd