Carl Edward Sagan (/ˈseɪɡən/; SAY-gən; November 9, 1934 – December 20, 1996) was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, science communicator, author, and professor. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which were universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect. More about Carl Sagan
Affiliate disclosure: When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.The most expensive item with a signature of Carl Sagan (CARL SAGAN SIGNED AUTOGRAPH INDEX CARD PSA AUTHENTICATED) was sold in September 2020 for $1100.00 while the cheapest item (Carl Sagan hand signed index card) found a new owner for $5.50 in September 2010. The month with the most items sold (3) was April 2020 with an average selling price of $59.00 for an autographed item of Carl Sagan. Sold items reached their highest average selling price in March 2021 with $424.50 and the month that saw the lowest prices with $21.69 was October 2020. In average, an autographed item from Carl Sagan is worth $148.25.
Most recently, these items with a signature of Carl Sagan were sold on eBay - click here for more items.
Item Title | Price | Store | |
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ANN DRUYAN SIGNED - COSMOS POSSIBLE WORLDS - FIRST EDITION HARDCOVER CARL SAGAN | $29.00 | ||
ANN DRUYAN SIGNED - COSMOS POSSIBLE WORLDS - FIRST EDITION HARDCOVER CARL SAGAN | $29.00 | ||
ANN DRUYAN SIGNED - COSMOS POSSIBLE WORLDS - FIRST EDITION HARDCOVER CARL SAGAN | $69.00 | ||
Broca's Brain (Signed First Edition) by Carl Sagan | $14.38 | ||
Carl Sagan Autograph | $150.00 | ||
CARL SAGAN SIGNED CONTACT 1985 1ST/1ST HC/DJ BOOK | $165.00 | ||
Carl Sagan SIGNED Framed Cosmos Book Page, NASA SETI Astronomer w COA | $229.00 | ||
CARL SAGAN Signed “A Pale Blue Dot”: Headline Book Publishing 1995 1st Edition | $599.00 | ||
Cosmos by Carl Sagan (1980, Hardcover) Signed BCE Random House Excellent Cond. | $250.00 | ||
Cosmos by Carl Sagan SIGNED! | $100.00 | ||
COSMOS Carl Sagan signed HC book 1995 | $150.00 | ||
Pale Blue Dot by Carl Sagan Autographed Signed (1994,Softcover) SUPERB Condition | $117.33 | ||
SHADOWS OF FORGOTTEN ANCESTORS Signed Astronomer Carl Sagan & Ann Druyan | $250.00 | ||
SIGNED SHADOWS OF FORGOTTEN ANCESTORS-A SEARCH FOR WHO WE ARE CARL SAGAN HCDJ | $129.00 | ||
Vintage 1980 Cosmos Carl Sagan First Edition 3rd Printing ~ Autographed Signed | $285.00 |