* Astronomy

The Morse Message (1962)

This radio message was transmitted from EPR (Evpatoria Planetary Radar) in 1962 and directed to planet Venus. The word "MIR" ("peace" and "the universe") was transmitted from the EPR on November 19, 1962, and the words "LENIN" and "SSSR" (Russian: , acronym for the Soviet Union) on November 24, 1962, respectively. All three words were sent using the Morse code. In Russian, this letter is called Radio Message "MIR, LENIN, SSSR". This message is the first radio broadcast for extraterrestrial civilizations in the history of mankind, it was also used as a test for the radar station (but was not used for measuring the distance to Venus because for distance measurements the EPR uses coherent waveform with frequency manipulation): The signal reflected from surface of Venus and was received 4 minutes 32.7 seconds (Nov 19) and 4 minutes 44.7 seconds (Nov 24) later.
Now this radio message is flying to the star HD131336 in the Libra constellation (it is interesting to note that the  star Gliese 581, the addressee of A Message From Earth and Hello From Earth, is also located in the Libra).
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Overcome the Great Silence

Word MIR (it signifies both "peace" and "world" in Russian) was transmitted from the Evpatoria Planetary Radar (EPR) on 19 November, 1962, and words LENIN and SSSR (the Russian acronym for the Soviet Union) - on 24 November, 1962, respectively. 
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Stephen Hawking Warns Against Alien Contact

Stephen Hawking, one of the world's leading physicists, claims aliens do exist but humans should stay away from them.
Hawking suggested that while most aliens are probably microorganisms or simple animals some could be intelligent and pose a threat to humanity.
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25,000 hellos from Earth to Gliese 581d
More than 25,000 messages have been transmitted into outer space in a bid to reach a distant planet that may hold life.
But don't hold your breath for an immediate response as it will take four decades for a reply to reach Earth and that's only if the messages are received by intelligent life that understand them.
The messages, transmitted at about midday AEST from the Tidbinbilla Deep Space Communication Complex outside Canberra, have come from 195 countries including some from places such as the Vatican city, Antarctica and Kosovo.

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