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Terrestrial receiving antennas were directed towards the constellation Vela.

Australian astronomers from the International Center for Radio Astronomy Research (ICRAR) at Curtin University caught FM radio transmissions from aliens for 17 hours in a row, aiming the antennas of their new Murchison Widefield Array (MWA) radio telescope at Vela – a constellation of the southern firmament. 

We searched and searched, but we never caught anything, as reported in the specialized journal Publications of the Astronomical Society of Australia, referred to by the ScienceAlert portal. 

They say, they did not find a single meaningful or even ordered low-frequency signal – from technosignatures, scientifically opposing, which could belong to representatives of some extraterrestrial civilization.

Antenna field of the Australian radio telescope.  Photo: www.mwatelescope.org

Antenna field of the Australian radio telescope. Photo: www.mwatelescope.org

The “radio listeners” – Chenoa Tremblay and Steven Tingay – for some reason we decided that if they exist by reason, they should broadcast at low frequencies. Therefore, we used the MWA radio telescope operating in the 72-240 MHz range. In total, astronomers surveyed an area containing approximately 10 million stars. But nothing. Deaf. 

Technosignatures were not revealed, and 75 exoplanets already discovered in that direction. Either the aliens are not there at all, or they are very far away – so much so that their “broadcasting” has not yet reached us, or their radio transmitters are very weak and the signals propagated by them merge with the general background.

Researchers are not discouraged. On the contrary, they were inspired. Since we were convinced that it is possible to search for signals of extraterrestrial intelligence, as they say, in passing – simultaneously solving more serious scientific problems.

A more sensitive low-frequency radio telescope, the Square Kilometer Array (SKA), will soon be erected in western Australia, which will be able to listen to billions of star systems. Not a single alien radio will hidden from it.

By the way, radio transmissions from Earth are now being heard in a sphere just over 200 light-years across. Such a distance has spread the electromagnetic waves that humanity has been emitting into the surrounding space since the invention of radio.  These waves, moving at the speed of light, “washed” more than 6 thousand star systems. 

They may already know about us there. And in the worlds located beyond the sphere, which astronomers call the “bubble of humanity”, the existence of intelligent humanity is not even suspected. But over time, they will be revealed to us, as we do to them.

Drake's equation began to give positive results.  Photo: NASA exoplanet research program.

Drake’s equation began to give positive results. Photo: NASA exoplanet research program.

No, there is someone

If you believe the American astronomers Louis Anchordoqui, Susanna Weber and Jorge Soriano, then in the foreseeable space there is someone to broadcast. In their opinion, within 10 kiloparsecs – this is about 30 thousand light years – there is at least one developed civilization that possesses the technology that allows the propagation of radio signals.

The astronomers presented their arguments in a work called ” Is there anybody out there? “

Anchordoqui and his colleagues came to the conclusion about the existence of alien civilizations by analyzing the famous Drake equation, which allows calculating the probable number of extraterrestrial civilizations. This equation was compiled in 1960 by the professor of astronomy and astrophysics at the University of California, Frank Donald Drake.

In the equation named after the scientist, there are seven members: the number of stars formed per year, the proportion of stars with planets, the number of planets or their satellites with conditions suitable for life, the probability of the birth of any life, the probability of its transformation into a reasonable one, the proportion of planets with highly developed creatures, the lifetime of a civilization that lives on the planet.

Calculations using the Drake equation, carried out many times already, gave a different number of alien life: from zero to 5 thousand. Such a wide spread arose from the fact that scientists differently estimated the values ​​of the parameters included in the equation. They were based, of course, on the ideas and observations of their time.

Now, as it turned out, there are much more stars in the Universe than it seemed before, and there are so many planets, including those that seem to be livable.

New calculations have led to an encouraging result: the number of civilizations in the foreseeable space is greater than zero.

The bubble of humanity is roughly 200 light-years in diameter.  Photo: wikipedia.org

The bubble of humanity is roughly 200 light-years in diameter. Photo: wikipedia.org

Our galaxy alone may contain 6 billion Earth-like planets

Canadian astronomers from the University of British Columbia (UBC) are also encouraging. In an article published in The Astronomical Journal, they prove that planets similar to ours – a kind of Second Earths – are by no means uncommon in the Milky Way, containing a myriad of stars – more than 400 billion. 

Our Earth is not alone.  Photo: wikipedia.orgOur Earth is not alone. Photo: wikipedia.org

Space

In December, Earth’s inhabitants will be able to see a rare cosmic phenomenon

In December, Earth's inhabitants will be able to see a rare cosmic phenomenon 107

At the end of the year, astronomers expect to see a rare cosmic phenomenon dubbed the “Christmas star” in the sky. It will be caused by the fact that Saturn and Jupiter come close to each other at a minimum distance and almost collide to become one super-bright point of light.

These two planets became one straight line in the solar system a few weeks ago, but at the end of December they will be on it for observers from Earth. This will happen on December 21, 2020, on the day of the winter solstice, when the daylight hours are the shortest and the night is the longest. Jupiter and Saturn will look like a “double planet” for the first time since the Middle Ages, Forbes writes.

“The conjunctions of the two planets are extremely rare, but this particular conjunction is especially rare because the planets will be very close to each other,” Patrick Hartigan, astronomer at Rice University, USA said. “In order to observe a closer conjunction of these planets in the night sky, we would have to return on March 4, 1226.”

It is noted that the unusual celestial phenomenon can be observed from anywhere on the planet. The main thing is that the sky is clear. The “Christmas Star” can be seen in the western sky about an hour after sunset when viewed from the northern hemisphere.

“On the evening of their closest approach, December 21, they will appear as a twin planet, separated by less than 1/5 the diameter of the full moon,” Hartigan said. “For most amateur astronomers looking at the night sky through a telescope, both planets and several of their largest satellites will be in the same field of view this evening.”

In December, Earth's inhabitants will be able to see a rare cosmic phenomenon 108

Those who want to see Jupiter and Saturn converge in the sky as close, but will be higher above the horizon, will have to wait until March 15, 2080, Hartigan said. After that, a similar configuration for this planetary pair will not be observed until 2400.

Astronomers are already preparing equipment to analyze in detail the upcoming event. Everything is very serious, because the second such rapprochement between Jupiter and Saturn cannot be expected.

Of course, there will not be a collision of planets. You just get the impression that something terrible is about to happen in the solar system. Astronomers have assured that there is no reason to worry.

Is the “Christmas Star” an omen of things to come? Mark your calendars! 

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Space

A giant asteroid worth $ 17.4 billion is approaching Earth

A giant asteroid worth $ 17.4 billion is approaching Earth 109

NASA announced the imminent flight of a potentially dangerous asteroid will pass the Earth. The website of the Center for the Study of Near-Earth Objects says that a celestial body ranging in size from 370 to 820 meters will approach the planet on November 29.

The asteroid, consisting of nickel, iron and cobalt, is approaching the Earth. The cost of minerals in its composition reaches $ 17.4 billion, with reference to the Asterank database, which contains data on 600 thousand asteroids.

The distance between the asteroid 153201 (2000 WO107) and the Earth will be more than 4 million kilometers, the Space Reference specified with reference to NASA data. It is noted that the distance from the Earth to the Moon is 10 times less, and the asteroid is considered dangerous because it crosses the orbit of our planet.

According to the NASA Center for the Study of Near-Earth Objects, the celestial body will approach the Earth on November 29. 

It is noted that this time the asteroid does not pose a threat to the planet, however, it belongs to the group of potentially dangerous ones, since its trajectory crosses the Earth’s orbit.

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Space

Intrusive buzzing. The Perseverance rover recorded the space sounds of its flight to Mars

Intrusive buzzing. The Perseverance rover recorded the space sounds of its flight to Mars 110

NASA’s new rover is equipped with a microphone to record sounds during landing on the Red Planet.

NASA’s Perseverance rover, which is en route to Mars, has recorded its flight to the planet.

The new rover is equipped with a microphone designed to record sound when entering the atmosphere, descent and landing. The device should arrive on the Red Planet in February 2021.

But before the rover reached its destination, NASA’s Jet Propulsion Laboratory (JPL) released an audio file recording what the rover “hears” during its interplanetary voyage.

The 60-second recording, posted on SoundCloud, was captured on Oct.19 while checking the rover’s EDL and microphone system.

Experts explain that the buzzing sound comes from a pump that pumps fluid to regulate the rover’s temperature.

NASA compares the new hit for your playlist to the noise you hear on wired headphones when the wire rubs against your clothing. It was these mechanical vibrations that the Perseverance microphone picked up.

“Located at the rear of the starboard side of the Perseverance, the pump is part of the unit’s heat system that maintains operating temperatures for the equipment, even in the coldest locations,” JPL said in a statement.

“I apologize to the person who came up with the slogan for the film” Alien “(” No one in space will hear your scream “- ed.), Perhaps no one will hear the scream, but perhaps a pump to remove heat will be heard,” says a leading engineer at JPL Dave Gruel.

He added that the microphone picks up the hum of the pump through mechanical vibration.

The Perseverance rover is supposed to land on Mars on February 18, 2021 in the Jezero crater – it is believed that a riverbed used to pass through this area. This is one of those places where traces of living organisms on the planet could be preserved.

The main mission of the rover is to detect signs of life in order to advance the study of the ancient history of Mars. In addition, the device will become part of a mission to deliver samples from the surface of the red planet: it will dig out rock at certain points, and then another device will pick them up, which will send them to Earth.

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