GJ 273b – Exoplanet in the constellation Little Dog
GJ 273b – Planet orbiting the Luyten star
Size: 1,47 Earth
Mass: 3 Earth
Equivalent temperature: -6°C
Twelve light-years from our solar system, Luyten’s star, the red dwarf, wanders from Earth in the constellation Little Dog. Astronomers have discovered two exoplanets next to it. At the same time one of them belongs to the superearth category and at the same time circulates at the edge of the ecosystem. In contrast to the many other planets whose parent star is a red dwarf, GJ273b knows what day is and what is the night. Usually, the planets move close enough that their rotation is connected, and their parent star only puts one hemisphere.
TRAPPIST-1d – Representative of TRAPPIST-1 sys
TRAPPIST-1d – One of representatives of the TRAPPIST-1 planetary system
Size: 0,8 Earth
Mass: 0,3 Earth
Equivalent temperature: 15°C
The relatively small weight of this planet indicates that its surface can be flooded by a deep ocean.
According to some speculations, here is 250 times more water than in the Earth’s oceans.
The first measurements showed that the planet is moving outside of the living zone, but now it seems that it will enter it safely. Exoplanet can boast a dense atmosphere and is so close to its star that it circulates in four days. It only drops by 4.3% more light than on Earth. Although TRAPPIST-1d circulates its star in synchronous rotation, a dense atmosphere in which there should be a lot of water vapor helps in thermal exchange. The difference between the illuminated and the dark hemisphere is not like that of other celestial bodies.
Difference between brain hemispheres
Difference between brain hemispheres – At approx. 98 % of right – handed and at approx. 70 % of left – handers speech centers are located in the left hemisphere. The right hemisphere was described as a non – verbal, visual – spatial, simultaneous, holistic and intuitive. While the left as verbal, rational, sequential. Functional asymmetry of the hemispheres of the brain means that one prevails over the other. They perform complementary roles in the processes of thinking. Although the function of each hemisphere of the brain is different, it is equally important for the proper functioning of all mental activities.
Hemispheres domination – Researchers report that only 10% of people have left the more developed part of the body from the right. This need not, however, apply only to the dominant hand, but also the legs, sight or hearing. The dominance of the other hemisphere can manifest itself also in the shape of certain organs.
Left-handedness two types
Left-handedness two types – Today we distinguish between left-handedness:
- genetic, occurring in patients whose left-handedness is genetically programmed,
According to an earlier theory neuropsychologist Norman Geschwind (1926-1984) the probability of left-handedness is more, if the fetus was exposed to increased concentrations of the male hormone testosterone, which affects the development of the cerebral hemispheres. This theory may explain why in the euro-american society among left-handers are more men (12%) than women (8%).
- pathological, the cause is the dominance of one cerebral hemisphere,
According to another theory, left-handedness is caused by problems during labor, as a result of oxygen deprivation causes damage to the brain. According to statistics among left-handers who have had complications during childbirth, 30% are mentally retarded.
Adolescent brain – Right hemisphere growing faster
Adolescent brain – Young children have the ability to quickly absorb information. This is because the right hemisphere is growing faster than the left. Squaring them only at the 3.5-year-olds, then schoolchildren left hemisphere becomes dominant. Therefore, with age, our ability to assimilate information wane.
Iapetus – Saturn’s moon which stands out
Iapetus – Saturn’s moon which stands out among its other satellites. One half of the almost doesn’t reflect light, while the other hemisphere is very clear. For this unique phenomenon corresponds to the moon Phoebe, which once collided with another object, and the dust created in the collisions it dropped to the surface of Iapetus.
Processing individual numbers
Processing individual numbers – Until now it was thought, that human numeric capabilities are located in the area of frontal – parietal brain cortex. Probably so, but researchers from Imperial College of London found. That the processing of the various figures involved in the different hemispheres of the brain. The right part specializes in small numbers, and the left operates large numbers. Coordinator of the study, Dr. Qadeer Arshad showed that when we look at his watch. The right side of our brain processes the digits from 1 to 6, and the left side counts from 6 to 12. It is unusual but it really is.