Across the Universe (message)
Encyclopedia
Across the Universe is an interstellar radio message (IRM) consisting of the song "Across the Universe
Across the Universe
"Across the Universe" is a song by the English group The Beatles. It was written by John Lennon, and credited to Lennon–McCartney. The song first appeared on the various artists charity compilation album No One's Gonna Change Our World in December 1969, and later, in different form, on Let It Be,...

" by The Beatles
The Beatles
The Beatles were an English rock band, active throughout the 1960s and one of the most commercially successful and critically acclaimed acts in the history of popular music. Formed in Liverpool, by 1962 the group consisted of John Lennon , Paul McCartney , George Harrison and Ringo Starr...

 that was transmitted on 4 February 2008, at 00:00 UTC by NASA
NASA
The National Aeronautics and Space Administration is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research...

  in the direction of the star Polaris
Polaris
Polaris |Alpha]] Ursae Minoris, commonly North Star or Pole Star, also Lodestar) is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star....

. This transmission was made using a 70 meter dish in the Deep Space Network
Deep Space Network
The Deep Space Network, or DSN, is a world-wide network of large antennas and communication facilities that supports interplanetary spacecraft missions. It also performs radio and radar astronomy observations for the exploration of the solar system and the universe, and supports selected...

's (DSN) Madrid Deep Space Communication Complex
Madrid Deep Space Communication Complex
The Madrid Deep Space Communications Complex is a ground station located in Robledo de Chavela, Spain, and operated by Ingenieria y Servicios Aeroespaciales, S.A. for Instituto Nacional de Técnica Aeroespacial.-Deep Space Network:...

, located in Robledo, near Madrid, Spain.

This action was done in order to celebrate the 40th anniversary of the song's recording, the 45th anniversary of the DSN, and the 50th anniversary of NASA. The idea was hatched by Beatles historian Martin Lewis, who encouraged all Beatles fans to play the track as it was beamed to the distant star. The event marked the first time a song had ever been intentionally transmitted into deep space
Outer space
Outer space is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles: predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, and neutrinos....

, and was approved by Paul McCartney
Paul McCartney
Sir James Paul McCartney, MBE, Hon RAM, FRCM is an English musician, singer-songwriter and composer. Formerly of The Beatles and Wings , McCartney is listed in Guinness World Records as the "most successful musician and composer in popular music history", with 60 gold discs and sales of 100...

, Yoko Ono
Yoko Ono
is a Japanese artist, musician, author and peace activist, known for her work in avant-garde art, music and filmmaking as well as her marriage to John Lennon...

, and Apple Records
Apple Records
Apple Records is a record label founded by The Beatles in 1968, as a division of Apple Corps Ltd. It was initially intended as a creative outlet for the Beatles, both as a group and individually, plus a selection of other artists including Mary Hopkin, James Taylor, Badfinger, and Billy Preston...

.

This IRM project has some significant defects in that the message was aimed at Polaris
Polaris
Polaris |Alpha]] Ursae Minoris, commonly North Star or Pole Star, also Lodestar) is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star....

, which is 431 light years distant from us and whose planetary system, even if it exists, may not be suited for life, because it is a supergiant
Supergiant
Supergiants are among the most massive stars. They occupy the top region of the Hertzsprung-Russell diagram. In the Yerkes spectral classification, supergiants are class Ia or Ib . They typically have bolometric absolute magnitudes between -5 and -12...

 star, spectral type F7Ib. In addition, the transmission rate was very high, about 128 kbit/s, for such moderate transmitter power
Transmitter power output
In radio transmission, transmitter power output is the actual amount of power of radio frequency energy that a transmitter produces at its output....

(about 18 kW).
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