The European Space Agency's (ESA) Laser Interferometer Space Antenna (LISA) is scheduled to launch in 2034. The next-generation space instrument aims to capture gravitational waves – tiny ripples through the fabric of space-time. LISA – the world's first dedicated space-based gravitational wave detector – is a staggeringly ambitious project,
LISA – the world's first dedicated space-based gravitational wave detector  A complex extraterrestrial civilization would be the construction of a black hole in the galactic center
Professor Marek Abramowicz of Sweden's University of Gothenburg believes that LISA plays a pivotal role in finally discovering technologically advanced alien civilization living in our galaxy.
Professor Abramowicz argues "a rare combination of circumstances" in life on Earth mean constraints will restrict the chanc
However, the chance of an alien life thriving somewhere remains possible, so they opt for a generic interpretation of the Drake Equation ̵
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Alien life search: Could gravitational waves could be manipulated to become messages?
Alien life search: Black Holes could be the base for technologically-advanced aliens
And a final assumption is that at least one of the alien societies wants to be significantly more technologically savvy than mankind.
Such an alien society wants
Sagittarius A *, the supermassive black hole at the center of the Milky Way, is, by definition, the center of the local star region – a spot, Professor Abramowicz says, towards which any advanced alien will naturally look.
Thus, the researchers suggest, making some assum ptions about alien life and thought, right next to Sagittarius A * – at the hole's innermost stable circular orbit is the ideal location to communicate with the rest of the galaxy.
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Sending message using gravitational waves is the perfect medium, because "once emitted, they travel through space virtually unperturbed."
The Mouser wrote: " Gravitational wave phenomena are omnipresent in the universe and with relatively more technological prowess relatively straightforward to detect. "
LISA's immense scale means it will be able to detect gravitational waves coming from anywhere, in any direction.
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And LISA does not want to be limited to monitoring one segment of the universe.
The researchers have called this hypothetical alien craft "The Messenger."
To be recognised as consciously fashioned in origin, they must be "unambiguously artificial."
Professor Abramowicz said: "In order to be recognised as such, a gravitational wave messenger beacon must have a clearly unnatural signal, such as a persistent emission of gravitational waves at a constant frequency. "
Professor Abramowicz, Professor, is a notable degree in the field of technology aliens.
Indeed, they suggest, sending a gravitational wave message.
The researchers write: "We argue that if a sophisticated extraterrestrial civ ilisation would be to construct a device to study the massive black hole in the galactic center, or to extract energy from it, or even for intentions unfathomable to the human mind, this device can serve as a messenger.