I love it
The most effective way to detect planets is through transit.
The planet passes against the background of the host star and the brightness of the star decreases. This is noticeable and the radius of the planets is determined from this difference.
But it’s also not the coolest method:)
Planets are generally difficult to find, they are small. That is, you cannot see the planet “with your eyes,” only indirectly, through some effects connected with the host star.
Imagine Earth as a person who always faces the Sun. Just like you always look forward, Earth always faces the Sun with one side. This happens because Earth rotates around its axis, and this rotation takes about the same time it needs to complete one orbit around the Sun.
2024-01-16 23:33:46 +0000 UTC View Post
When light hits the surface of a mirror, it is reflected so that the angle of incidence is equal to the angle of reflection. This principle is described by the law of light reflection.
The surface of the mirror consists of atoms or molecules (usually covered with a thin layer of metal, most often aluminum).
When light hits this surface, the electrons in the atoms begin to vibrate under the influence of the electromagnetic fields of the light. As a result of these vibrations, light is re-emitted in the same direction as the incident light, creating a reflection.
And you can see your beautiful face😌😌
You know that our Universe arose due to the fact that in the early stages of the formation of it there were some violations of the laws in physics.
Violation of the laws of symmetry.
And as a result, the number of antiparticles and particles did not coincide. Thanks to the excess of particles, our world exists now.
This concept is called baryon asymmetry of the Universe.
In general, our whole world is one big mistake:)
My fantasy is ended(
2023-12-15 13:14:44 +0000 UTC View Post
Everyone knows that the Universe is approximately 13.8 billion years old.
The estimate of 13.8 billion years is not an exact number, but it represents the best estimate based on current data and theoretical models.
As technology advances and new data becomes available, estimates of the age of the Universe may be subject to adjustments.
That is, if we more accurately measure for example distant objects, which is one of the components of the age estimate of the Universe, the age will change.
So it's not a fact that the Universe is exactly that age.
We can say it is the age with an error:)
Red giants are a type of star that is in the later stages of its evolution. They usually form from stars like our Sun when the star runs out of hydrogen in its core and begins the process of expanding its outer layers.
It causes the star to increase in size, becoming much more voluminous and bright. Red giants emit most of their energy in infrared wavelengths. This happens because the outer layers of red giants are rich in molecules and dust that absorb visible light (high energy) and emit energy in the infrared spectrum (low energy).
On the pic( the VLTI telescope): Antares is red supergiant, with a diameter 400 times larger than the Sun's.
If Antares were in the Sun's place, it would extend beyond the orbit of Mars and "touch" Jupiter.
Nebulae and galaxies in real photos from space usually don't have bright colors like the pictures you see on the internet.
The colors in such images are added for scientific purposes. They can represent different wavelengths of light obtained using various filters or telescopes. Each color can correspond to a specific range of wavelengths, which helps scientists study the chemical composition and physical characteristics.
For example, red tones might indicate the presence of hydrogen, while blue might signify the presence of oxygen.