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Human presence in outer space began with the first launches of artificial object in the mid 20th century, and has increased to the point where Earth is orbited by a vast number of artificial objects and the far reaches of the Solar System have been visited and explored by a range of space probes.
Space engineers helped design heart pumps now used to keep people in need of heart transplant alive until a donor heart becomes available. [28] Discoveries concerning the human body and space, particularly the effects on the development of bones, may provide further understanding of biomineralization and the process of gene transcription. [29]
Philosopher Brian Leftow has argued that the question cannot have a causal explanation (as any cause must itself have a cause) or a contingent explanation (as the factors giving the contingency must pre-exist), and that if there is an answer, it must be something that exists necessarily (i.e., something that just exists, rather than is caused ...
A Theory of Everything will explain why the various features of the Universe must have exactly the values that have been recorded. The multiverse: Multiple universes exist, having all possible combinations of characteristics, and humans inevitably find themselves within a universe that allows us to exist.
In the piece, the physicist writes, "I believe in the possibility of commercial space travel – for exploration and for the preservation of humanity." See Stephen Hawking through the years:
Save the environment of Earth by moving people and industry into space; Biotic ethics is a branch of ethics that values life itself. For biotic ethics, and their extension to space as panbiotic ethics, it is a human purpose to secure and propagate life and to use space to maximize life.
Intellectual minds like Stephen Hawking have warned that sending a message into space could lead to the annihilation of the human race. Others disagree.
A poll of United States and Chinese university students in 2000 provides factor analysis of responses to questions about, inter alia, the participants' belief that extraterrestrial life exists in the Universe, that such life may be intelligent, and that humans will eventually make contact with it. [25]