Space
Radio signals from mobile phone towers could lead ALIENS to Earth
A new study has determined that intelligent alien beings could find Earth through mobile phone towers and the radio signals they emit.
“The Earth is already anomalously bright in the radio part of the spectrum,” said Mike Garrett, the director of Jodrell Bank Center for Astrophysics at the University of Manchester. “If the trend continues, we could become readily detectable by any advanced civilization with the right technology.”
Garrett and his colleagues used crowdsourced data to simulate the
leakage of radio signals from cell phone towers and to see how hard
these signals would be to discover from other planets. Their findings
were published February 2023 in the Monthly Notices of the Royal Astronomical Society.
The researchers found that Earth emits lots of signs of
technologically modern life, with radio leakage originating from cell
phone towers, satellite communications and internet signals. They said
these signals could reach theoretical civilizations living around
adjacent stars, including Barnard’s star – a red dwarf star located six
light-years away that may have a large, Earthlike planet orbiting it.
However, the researchers noted that these signals could only be
detected by aliens with more sensitive instruments than those found on
Earth. But as the signals get louder, even less technologically smart
aliens could possibly detect them.
“I’ve heard many colleagues suggest that Earth has become
increasingly radio quiet in recent years — a claim that I always
contested. Although it’s true, we have fewer powerful TV and radio
transmitters today, the proliferation of mobile communication systems
around the world is profound. While each system represents relatively
low radio powers individually, the integrated spectrum of billions of
these devices is substantial,” Garrett said.
Signals detectable by aliens are growing stronger
The detectability of humans is likely to rise as
Earth’s broadband systems become more powerful. According to Garrett,
current estimates suggest that humans will have more than 100,000
satellites in low Earth orbit and beyond before the end of the decade.
The findings in the study, of which Garrett is the lead author,
showed that the radiation from mobile towers is changeable in intensity
and recurrent in nature because of its non-uniform distribution on
Earth’s surface and the rotation of the planet.
The researchers determined that any nearby civilization situated
within 10 light-years of Earth and equipped with a receiving system
comparable to the Green Bank Telescope are not going to find the mobile
tower leakage from Earth. But those equipped with next-generation
telescopes like Square Kilometer Array or SKA “could do better.”
And the detectable signals from Earth will only grow stronger over
time. Future research should involve other sources of radio leakage like
individual mobile handsets, military radar, digital broadcasting and
Wi-Fi networks, they remarked.
“Every day we learn more about the characteristics of exoplanets via
space missions like Kepler and the Transiting Exoplanet Survey
Satellite, with further insights from the James Webb Space Telescope. I
believe that there’s every chance advanced civilizations are out there,
and some may be capable of observing the human-made radio leakage coming
from Earth,” said study co-author Nalini Heeralall-Issur, an
astrophysicist at the University of Mauritius.
Watch this video about about the Galileo Project’s search for extra-terrestrial techno signatures and advanced aliens.
(Article by Kevin Hughes republished from Citizens.news)
Recently, a group of experts from Harvard University, led by physics
professor Avi Loeb, announced the possible presence of alien space
debris in Earth’s orbit, reports the Daily Star.
Leading
space research expert Professor Loeb is confident that the discovery of
such “interstellar objects could help expand our knowledge of possible
alien civilizations and technologies. A team of scientists is conducting
research to confirm that some of the objects in our orbit may be
connected to other star systems.
During an interview with Live
Science, Professor Loeb explained that these objects could enter the
solar system from interstellar space, defying Jupiter’s gravitational
pull and occupying limited orbits around the sun.
Some of them may
have technological origins similar to the probes sent by mankind into
interstellar space, such as Voyager 1 and Voyager 2, Pioneer 10 and 11
and New Horizons.
However,
despite these interesting assumptions, Professor Loeb did not specify
what specific objects he was talking about. In his research report, he
notes that there could be “a significant number” of potentially
detectable objects in Earth’s orbit.
To confirm their assumptions,
the team of scientists uses computer simulations and the Vera Rubin
Observatory (Chile) with a high-resolution camera of 3.2 billion pixels.
This will allow for regular observations of the Southern sky and the
possibility of detecting several captured objects about the size of a
football field.
It is assumed that these interstellar objects passed through the
boundaries of the solar system and may carry unique information about
other civilizations and their technologies. If we could confirm the
origin of these objects, the mysteries that open before us, this would
be a real breakthrough in space exploration.
Professor Loeb
expresses hope that the new research will not only help expand our
knowledge of extraterrestrial technologies, but may also lead to the
discovery of new alien civilizations . Answers to such questions can be
of global significance and influence our understanding of the place of
mankind in the Universe.
And
while there are still many questions and assumptions, the study by
Professor Loeb and his team opens a new chapter in space exploration.
Each new discovery can be the key to deciphering the mysteries of the
cosmos and the possibility of encountering alien life forms.
Betelgeuse, a red giant on the brink of death, continues to show
unusual behavior. After the Great Blackout, which occurred in late 2019
and early 2020, the star became unusually bright. It is now the seventh
brightest star in the sky, while it normally ranks tenth. This has led
to speculation that Betelgeuse is preparing to explode in a
spectacularly large supernova.
However, scientists believe it’s too early to tell, and it’s likely
that this behavior is due to ongoing fluctuations after the Great
Blackout of 2019, and the star will return to normal within a decade.
Betelgeuse is one of the most interesting stars in the sky. It is
about 700 light-years from Earth and is a red giant in the last stage of
its life. It is also an unusual star for a red giant because it was
previously a monster blue-white O-type star, the most massive class of
stars.
Betelgeuse has changed its spectral type because it has almost
exhausted its hydrogen reserves. It now burns helium into carbon and
oxygen and has expanded to a gigantic size: about 764 times the size of
the Sun and about 16.5 to 19 times its mass.
Eventually it will run out of fuel to burn, become a supernova, eject
its outer material, and its core will collapse into a neutron star.
Before the Great Blackout, Betelgeuse also had periodic fluctuations
in brightness. The longest of these cycles is about 5.9 years and the
other is 400 days. But it seems that the Great Blackout caused changes
in these oscillations.
A new paper by astrophysicist Morgan McLeod of the
Harvard-Smithsonian Center for Astrophysics has shown that the 400-day
cycle appears to have been halved. This pulsational cycle is probably
caused by expansion and contraction within the star. According to
simulations carried out by MacLeod and his colleagues, the convective
flow inside Betelgeuse may have risen and become material that separates
from the star.
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