Mysteries of Space

We can discern only 0.000002% of all the stars in the Milky Way Scientists estimate nearly 100 billion stars (others say 400 billion) in the Milky Way galaxy. But the naked human eye can see no more than 10,000 stars, and that's if you visit all corners of the Earth. On a clear night, you may think the sky is filled with tens or maybe hundreds of thousands of stars. However, at best, you can count no more than 3,000 luminous objects at a time.

Planet Tajikistan The Solar System holds such a small planet (diameter just over 20 km). It received its name in 2015 from the International Society of Astrophysicists in honor of Tajikistan for the outstanding contribution of Tajik scientists to the development of world astrophysics. The planet Tajikistan is located between Mars and Jupiter, its distance from Earth is 250 million km. The planet revolves around the Sun once every five years.

Massive Black Hole in our Galaxy If the stars depicted here are held near the Galactic center by the force of gravity, then the source of the gravitational field must be compact and massive. From the analysis of stellar motions, it follows that a region less than a fifth of a light year in size contains a mass 5 million times that of the sun. According to astronomers, these observations provide strong evidence for the existence of a supermassive black hole at the center of our galaxy. This animation shows not only the true motion of many stars, but also the expected behavior of the cloud of gas, which is rapidly falling toward the black hole.

The highest mountain in the solar system is Mount Olympus. It is 26 km high and is located on Mars. For comparison, the highest mountain on Earth - Everest has a height of less than 9 km. Diameter of Olympus is about 540 km. The volcano has steep slopes around the edges up to 7 km high. Olympus covers such a large area that you cannot see it completely from the surface of the planet. If you stand on the highest point of the volcano, its slope will go over the horizon. Therefore, the full profile of Olympus can only be seen by rising above the surface.

How do people take astrophotographs? Have you ever tried to take a pic of the night sky with your phone? It won't work, photos will be dark. For taking a photo of the starry sky, you need a minimum of professional equipment and some skills in setting it up. The key thing is: 1. Get out of the city to the place with no highlights 2 Have a camera power of 2000 ISO or higher. 3. Have a shutter speed of 10 to 50 seconds. Of course, photos like this only come out with the right experience.

How to find the brightest star in the sky? Sirius, also α Canis Majoris, is the brightest star in the night sky. Although its luminosity exceeds by 25 times the luminosity of the Sun, it is by no means a record in the world of stars - the high apparent brilliance of Sirius is due to its relative proximity. Sirius can be seen from any region of the Earth, except for the most northern regions. Sirius is 8.6 solar years away from the solar system and is one of the closest stars to us.

Tests of a solid propellant booster for the SLS rocket A smaller model of the future BOLE (Booster Obsolescence and Life Extension) engine developed a thrust of 42 tons. The booster is needed for lunar missions under the Artemis program, starting with the fourth.

British scientists have explained the phenomenon of "Saturn's hexagon" Scientists came to the conclusion that the mysterious phenomenon is due to the movement of anticyclones in the interior of the planet and the processes of heat exchange. Convection occurs in the outer layers of the celestial body, and self-organized turbulence in the form of giant eddies forms complex geometric shapes of the atmospheric phenomenon. The relevant conclusions were drawn after a three-dimensional simulation of the Saturn hexagon in the laboratory.

Oxygen content on Mars is less than 0.13% Mars has 96% of its atmosphere in carbon dioxide (CO₂) and less than 0.13% oxygen, compared to 21% on Earth. NASA plans to use enlarged versions of the Moxie spacecraft on manned missions instead of carrying oxygen supplies from Earth. Moreover, oxygen (O₂) is a necessary part of the fuel that makes rockets work. Their thrust force is created by combusting the fuel in the presence of an oxidizer, which can be pure oxygen. The Moxie device breaks the CO₂ molecules into their constituent oxygen atoms, and the byproduct is carbon monoxide, which is released back into the atmosphere of Mars.

Everyone knows about the water cycle, but where did water originally appear on our planet? One theory is that water came from comets colliding with the Earth and made up of ice.