The Moon is believed to have formed from a collision, 4.5 billion years ago, between Earth and an impactor the size of Mars, known as "Theia." Over the past decades scientists have simulated this process and reproduced many ...
Space Exploration
Aug 29, 2012
54
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Holiday shoppers, take note. Marketing and psychology researchers have found that in gift giving, bundling together an expensive "big" gift and a smaller "stocking stuffer" reduces the perceived value of the overall package ...
Social Sciences
Dec 12, 2011
0
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(PhysOrg.com) -- Two Pioneer probes left our solar system carrying plaques about humankind, and two Voyager probes will soon join them to gather information about places far out in our galaxy. We can and will send more autonomous ...
Space Exploration
Nov 7, 2011
9
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The unification of quantum mechanics and Einstein's general relativity is one of the most exciting and still open questions in modern physics. General relativity, the joint theory of gravity, space and time gives predictions ...
Quantum Physics
Oct 19, 2011
8
8
(PhysOrg.com)—Enrico Fermi, the famous Italian physicist, once asked the question; if intelligent life has come to exist many times in our galaxy, why is there no sign of it? It's a clearly valid point, when you consider ...
Why have we not made contact with aliens after so many years searching the depths of space? The Eerie Silence, a new book by SETI researcher Paul Davies, provides a fresh and thoughtful look at this question.
Space Exploration
Apr 15, 2010
71
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Danish researcher has solved one of the great mysteries of our geological past: Why the Earth's surface was not one big lump of ice four billion years ago when sun radiation was much weaker than today. Scientists have presumed ...
Earth Sciences
Mar 31, 2010
5
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(PhysOrg.com) -- For more than 50 years, many have taken the so-called Fermi Paradox to indicate that the existence of intelligent alien civilizations is an impossibility. However, a recent re-examination of the paradox points ...
How did complex life emerge and evolve on the Earth and what does this mean for finding life beyond Earth?
Astrobiology
May 20, 2024
0
22
In 1950, while sitting down to lunch with colleagues at the Los Alamos Laboratory, famed physicist and nuclear scientist Enrico Fermi asked his famous question: "Where is everybody?" In short, Fermi was addressing the all-important ...
Astrobiology
Nov 29, 2023
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