Hello From Earth
Encyclopedia
HELLO FROM EARTH is an Interstellar Radio Message (IRM). It was sent from the 70-meter dish at NASA Deep Space Station 43 (Canberra Deep Space Communication Complex
), at midday on Friday 28 August 2009. The message was directed at the nearby red dwarf
star
Gliese 581
, which has its own planetary system.
The total number of individual messages, which were sent by users to HFE web site, is about 25,880. The total size of the messages was 2,845,539 bytes.
The main defect of this IRM was insufficient scientific and technical justification, since no SETI
scientist made any statement validating HFE's design. According to http://www.hellofromearth.net/gliese581d/links/index.htm: "After the final message was collected on Monday 24 August 2009, messages were exported as a text file and sent to NASA's Jet Propulsion Laboratory in California, where they were encoded into binary, packaged and tested before transmission." However, nobody explained why he hoped that such "encoded and packaged" text will be understandable by probable Extra-Terrestrials.
Canberra Deep Space Communication Complex
The Canberra Deep Space Communication Complex is a ground station that is located in Australia at Tidbinbilla in the Paddys River valley, about half an hour's drive out of Canberra in the Australian Capital Territory. The complex is part of the Deep Space Network run by NASA's Jet Propulsion...
), at midday on Friday 28 August 2009. The message was directed at the nearby red dwarf
Red dwarf
According to the Hertzsprung-Russell diagram, a red dwarf star is a small and relatively cool star, of the main sequence, either late K or M spectral type....
star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
Gliese 581
Gliese 581
Gliese 581 is a red dwarf star with spectral type M3V, located 20.3 light years away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 89th closest known star system to the Sun. Observations suggest that the star has at least six planets:...
, which has its own planetary system.
The total number of individual messages, which were sent by users to HFE web site, is about 25,880. The total size of the messages was 2,845,539 bytes.
The main defect of this IRM was insufficient scientific and technical justification, since no SETI
SETI
The search for extraterrestrial intelligence is the collective name for a number of activities people undertake to search for intelligent extraterrestrial life. Some of the most well known projects are run by the SETI Institute. SETI projects use scientific methods to search for intelligent life...
scientist made any statement validating HFE's design. According to http://www.hellofromearth.net/gliese581d/links/index.htm: "After the final message was collected on Monday 24 August 2009, messages were exported as a text file and sent to NASA's Jet Propulsion Laboratory in California, where they were encoded into binary, packaged and tested before transmission." However, nobody explained why he hoped that such "encoded and packaged" text will be understandable by probable Extra-Terrestrials.
External links
- http://www.hellofromearth.net