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The Voyager Golden Record contains 116 images and a variety of sounds. The items for the record, which is carried on both the Voyager 1 and Voyager 2 spacecraft, were selected for NASA by a committee chaired by Carl Sagan of Cornell University.
Short audio recording of Carl Sagan describing the primary concept of his book The Pale Blue Dot at the United States Library of Congress Seth MacFarlane Collection of the Carl Sagan and Ann Druyan Archive; A new picture of Earth taken through the rings of Saturn by the Cassini spacecraft on September 15, 2006. More information about photo.
Rare Earth was succeeded in 2003 by the follow-on book The Life and Death of Planet Earth: How the New Science of Astrobiology Charts the Ultimate Fate of our World, also by Ward and Brownlee, which talks about the Earth's long-term future and eventual demise under a warming and expanding Sun, showing readers the concept that planets like Earth ...
The eponymous Silurians on Doctor Who are a race of reptilian humanoids from Earth's past, making their first appearance in the show in 1970. Frank and Schmidt cite Inherit the Stars, a 1977 novel by J. P. Hogan as containing a similar hypothesis, but also say they were surprised by how rarely the concept was explored in science fiction. [2]
The Purple Earth Hypothesis (PEH) is an astrobiological hypothesis, first proposed by molecular biologist Shiladitya DasSarma in 2007, [1] that the earliest photosynthetic life forms of Early Earth were based on the simpler molecule retinal rather than the more complex porphyrin-based chlorophyll, making the surface biosphere appear purplish ...
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First edition cover art of Ralph Brillhart published by Monarch Books. The Colors of Space is a 1963 science fiction novel by Marion Zimmer Bradley.. The book has been reviewed by P. Schuyler Miller for the Analog Science Fiction and Fact (1964), by Steve Miller for the Science Fiction Review (1983), and also that year by Robert Coulson for the Amazing Science Fiction.
The estimated time for the Sun to cool enough to become a black dwarf is at least 10 15 (1 quadrillion) years, though it could take much longer than this, if weakly interacting massive particles (WIMPs) exist, as described above. The described phenomena are considered a promising method of verification for the existence of WIMPs and black dwarfs.