The heaven shall reveal his iniquity; and the earth shall rise up against him. Job:20:27, For her sins have reached unto heaven, and God hath remembered her iniquities.Revelation:18:5

UNIVERSE TODAY

Space and astronomy news

POSTED ONJULY 19, 2023 BY BRIAN KOBERLEIN

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Detecting Aliens: So how can astronomers distinguish between the distant artificial signal and the local ones?

In radio astronomy, there are lots of natural radio signals to observe. The glow of hydrogen gas, the swirl of electrons along a magnetic field, or the pop-pop-pop of pulsars. These signals usually have a very natural character to them, so astronomers can distinguish them from the artificial chirps and chatters of terrestrial sources. But when you’re looking for the signals of alien civilizations, things can get more tricky. They should have an artificial character similar to the radio signals of humans. So how can astronomers distinguish between the distant artificial signal and the local ones?

Citizen of Earth or Heaven? : It’s not an easy challenge, The Papacy

It’s not an easy challenge. Even natural signals can be confused with artificial ones. For example, back in 2007, astronomers began detecting bright radio pulses known as fast radio bursts (FRBs). These millisecond-long bursts are likely caused by magnetars, though there is still much we don’t understand about them. After they were discovered, astronomers at Parkes Observatory combed through their old data and found radio chirps similar to FRBs known as perytons. For a while, astronomers wondered if these were similar phenomena, but they soon figured out that perytons were caused when hungry astronomers opened a microwave oven while it was still running so that the oven released a short radio chirp before stopping. By the way, it’s perfectly safe to do that as long as you aren’t at a radio observatory.

And let it be remembered, it is the boast of Rome that she never changes. The principles of Gregory VII and Innocent III are still the principles of the Roman Catholic Church. And had she but the power, she would put them in practice with as much vigor now as in past centuries. Protestants little know what they are doing when they propose to accept the aid of Rome in the work of Sunday exaltation. While they are bent upon the accomplishment of their purpose, Rome is aiming to re-establish her power, to recover her lost supremacy. Let the principle once be established in the United States that the church may employ or control the power of the state; that religious observances may be enforced by secular laws; in short, that the authority of church and state is to dominate the conscience, and the triumph of Rome in this country is assured.
God’s word has given warning of the impending danger; let this be unheeded, and the Protestant world will learn what the purposes of Rome really are, only when it is too late to escape the snare. She is silently growing into power. Her doctrines are exerting their influence in legislative halls, in the churches, and in the hearts of men. She is piling up her lofty and massive structures in the secret recesses of which her former persecutions will be repeated. Stealthily and unsuspectedly she is strengthening her forces to further her own ends when the time shall come for her to strike. All that she desires is vantage ground, and this is already being given her. We shall soon see and shall feel what the purpose of the Roman element is. Whoever shall believe and obey the word of God will thereby incur reproach and persecution. GC 581.1 – GC 581.2

The Great Controversy Between Christ and Satan by Ellen G White

But he himself turned again from the quarries that were by Gilgal, and said, I have a secret errand unto thee, O king: who said, Keep silence. And all that stood by him went out from him. Judges:3:19

The SETI project specifically looks for unusual signals with an artificial character, and they find lots of them. Everything from cars starting to Starlink satellites can create a strong artificial signal.  Usually, the way to distinguish between a local source and a distant one is to move the telescope “off-target” a bit, then back to the source. If you’ve ever seen the movie Contact, this is what the astronomers do to confirm the alien signal is coming from Vega. The problem with this method is that it takes time, meaning it can’t be used for short-lived signals. But now a team has developed another method.

For among my people are found wicked men: they lay wait, as he that setteth snares; they set a trap, they catch men. Jeremiah:5:26

Remove All Ads on Universe TodayJoin our Patreon for as little as $3!Get the ad-free experience for lifeThe Wow! signal represented as “6EQUJ5”. Credit: Big Ear Radio Observatory/NAAPO

Distinguish stars from planets by Fishing 🎣 with Pope Francis: WE ARE ALL CATHOLICS NOW

The technique is similar to the way we can distinguish stars from planets with the naked eye. Light passing through our atmosphere is refracted slightly by the turbulent motion of air, causing stars to twinkle. Since planets are much closer than stars, they aren’t a single pinprick of light, so they don’t twinkle. For distant radio sources, their light passes through interstellar gas which causes them to flicker in brightness, which astronomers call scintillation. Local radio sources don’t scintillate.

So the team developed a software package that looks at the scintillation of artificial radio sources. If a radio source flickers on a timescale of less than a minute, then it is likely not terrestrial.

There are some limitations to this approach. For one, a radio source needs to be at least 10,000 light years away to exhibit scintillation, so alien signals from nearby stars wouldn’t pass this test. For another, there are a few human radio sources that can mimic scintillation. But even though the method isn’t perfect, it is a great way to filter out the bulk of Earth-based intelligent signals, which will let astronomers focus on those that just might be a message from an alien civilization.

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Reference: Brzycki, Bryan, Andrew Siemion, and Imke de Pater. “On Detecting Interstellar Scintillation in Narrowband Radio SETI.” American Astronomical Society Meeting Abstracts. Vol. 55. No. 2. 2023.

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