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Credit & Copyright: SETI League
Explanation:
No one knows for sure what caused this
signal. The bright colors on the
blue background indicate that an anomalous signal
was received here on Earth by a
radio telescope
involved in a
Search for Extraterrestrial Intelligence (SETI).
A search for these signals is ongoing by
several groups including volunteer members of the
SETI League.
Time labels the vertical axis of the
above plot, and frequency marks the horizontal axis.
Although
this strong signal was never positively identified,
astronomers have identified in it many attributes
characteristic of a man-made satellite in low Earth orbit.
Many
unusual signals from space remain unidentified.
No signal has yet been
strong enough or run long enough to be unambiguously
identified as originating from an
extraterrestrial intelligence.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: SETI - signal
Publications with words: SETI - signal
See also: