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Our world is a rather strange place. Physicists have long assumed that our Universe can be only one of many, and some of the most mysterious objects in the Universe – black holes – can turn out to be portals to other worlds. But what if black holes are not portals to other worlds, but portals for traveling through space and time? 

Indeed – black holes balance on the brink between science fiction and science fact. On the one hand, scientists saw how black holes absorb stars that were too close to them. On the other hand, at the edge of a black hole, is a place known as the event horizon , from where nothing can escape, not even light. But what happens to a spaceship if it gets there?

Black holes may turn out to be portals for traveling through space and time 95
It is possible that once inside a black hole, you can be in another galaxy

What happens inside a black hole?

Given all the data we have about black holes , scientists believed that nothing good awaits us inside these massive objects. However, the latest computer simulation showed that once inside a black hole, you can move to a distant part of the Milky Way or to another galaxy. In this case, one of the safest portals may be a supermassive black hole in the center of our galaxy, – Sagittarius A *. Business Insider writes about this with reference to researchers from NASA.

We do not know what is happening beyond the event horizon inside the black hole. Scientists agree that if you go far enough into a black hole, gravity will become so strong that it will destroy everything in its path. But sci-fi films are more optimistic – in them black holes are portals for traveling through space and time, or portals for traveling to other worlds. In fact, in the center of each black hole is a point of infinite density, called a singularity. It is the singularity that gives black holes a strong gravitational attraction. For decades, scientists believed that the singularities of all blacks are the same, so everything that passes through the event horizon will be destroyed in the same way: everything will stretch and stretch, like infinitely long spaghetti.

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Here is the first ever black hole photo

But all this changed in the early 1990s, when various research groups in Canada and the United States discovered a second singularity called the “mass inflation singularity.” This discovery suggests that you can theoretically survive a journey through a black hole. It will stretch you but ultimately not kill you, that is, you can survive the journey through a black hole. More precisely, through a large rotating black hole in which singularities of this type exist. Now astronomers need to find a suitable black hole to test this theory. And the best place to check is Sagittarius A * – a supermassive black hole in the center of our galaxy, which is located at a distance of 27,000 light years from us.

Given that there is no way to get there, verification of this theory is possible only with the help of computer simulation. That’s exactly what scientists from Umass University of Dartmouth and Georgia College did. According to the results, once inside Sagittarius A * you can feel nothing at the right speed and at the right time .

On the other side of the black hole

Black holes may turn out to be portals for traveling through space and time 97
Black holes are one of the most mysterious objects in the universe

As for what happens when you get to the other side, you can’t say almost anything. But the authors of the study have their own ideas. According to the researchers, there is a chance that you will end up in some remote part of our galaxy – potentially remote from any planets or stars, and according to the second probability, you may even end up in another galaxy. It all depends on how far you manage to get into the black hole. Nevertheless, scientists believe that more research is needed before we approach a successful journey through a black hole. But when we are ready, the supermassive black hole in the center of the Milky Way may turn out to be our lucky ticket to another galaxy.

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 110

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 111

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 112

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 113

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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