Recent content by Line_112

Rather, to increasing the power of telescopes than to change their location. On Earth, is greatly hampered by terrestrial interference, and it is always very unpleasant when a suspicious signal is first reported, and then official scientists refute it. A telescope on the far side of the Moon...

I read that there are ideas to build a radio telescope on the far side of the Moon. There will be no anthropogenic noise there.

Fast radio bursts, for example.

It seems to me that this will be too expensive and will require a lot of resources, and possibly territories.

It will be more gradual and less clear-cut, and will take many decades. By that time, the climate change and nuclear threat may already be solved, and therefore it will not be so scary to get negative results (although I hope they will be positive). And if they are not solved, then civilization...

If on average there is one radio-emitting civilization in the entire galaxy, then on average, waves will only reach us from one (there may be more, or there may not be any at all, it's a matter of luck). Now waves from one can reach us, after some time - from another, but not simultaneously from...

But if this is a short period by astronomical standards, then there will be very few such civilizations, perhaps one in the entire galaxy. Direct photography of planets (in the future), search for bioindicators.

Probably, advanced civilizations do not use radio communication. Then there will be a false idea of our loneliness, from which there will be nothing but harm. There are more promising ways to detect biological activity on exoplanets than trying to catch a radio signal, which may not exist. It...

I haven't written about science in general, but there are areas that are either unproductive or have negative side effects. For example, in the case of AI development, this is the loss of income sources for many people (I am one of the victims) and the cluttering of the Internet with stylized...

But the whole trick here is that we are the external observers, not the little people falling into the black hole. For us, time does not pass there. Then, for the formation of a classical black hole, an infinite timefrom our point of view would be required from the moment the primary gas-dust...

I meant created by alien civilizations. Not humans, of course.

TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any...

According to the General Theory of Relativity, time does not pass on a black hole, which means that processes they don't work either. As the object becomes heavier, the speed of matter falling on it for an observer on Earth will first increase, and then slow down, due to the effect of time...

I haven't studied this issue enough to have a clear opinion. It seems to me that both the extra- and intra-galactic variants are possible. But scientists should in any case check the absorption capacity of the Milky Way disk (if it hasn't been checked yet) to give preference to one of these...

As for absorption, I searched a lot and found nothing. However, it is possible to roughly compare the amount of gas (excluding hydrogen) and dust in the path of gamma rays in the plane of the Milky Way with those in the Earth's atmosphere. The Earth's atmosphere is transparent to solar rays, but...