In our Galaxy, there are millions of black holes with a mass of extra-solar masses (plus a giant black hole at its center). But vradius hundreds of light-years from the Sun, judging by the fact that there is no single black hole, so that the collision of the dream does not threaten us.
The origin of the human brain belongs to the main mysteries of the evolution of IK one of the most controversial topics in biological science. Why did evolution support primate brain development at some point in time? Why has the brain grown so rapidly for a short period? And why is the brain of Homo sapiens constantly losing weight for 30,000 years?
According to official data, about 130 thousand soldiers of the American army in Iraq and Afghanistan received various brain injuries of varying degrees of danger, from mild concussion to lethal. A simple face mask could have saved many of them.
Man has long guessed that nothing is eternal under the Sun. In the middle of the last century, it turned out that it was not eternal for our luminaries. In 5.5 billion years, it will begin to slowly expand, and its surface will cool down...
The successes of medicine over the past century are associated not only with the development of the latest drugs that cure patients, but with vaccination - the introduction of vaccines to those who are not yet sick.
Usually, magnetic fields are associated with planes and stars. But there are such fields of galaxies too.
This year, the Search for Extra-Terrestrial Intelligence (SETI) project will be 60 years old!
What do you do if you scratch? Smear the scratch with iodine or zelenka, close it with a bactericidal patch. What for? A strange question: so that the ion germs do not suppurate.
The evolution of life on Earth is so large-scale and striking in its own results that it is tempting to see some kind of "intelligent design" behind us. But modern evolutionary biology insists: Darwin's brilliant conjecture of natural selection as the driving mechanism of evolution is relevant to this day. New scientific discoveries do not contradict the fundamental foundations of the theory of evolution.
Almost the entire twentieth century was spent in a joyful conviction that looking tanned is very fashionable, sporty and useful for health. But is that really the case?