This is NGC 2467, a scattered star cluster with an emission nebula 17,000 light-years away from Earth.
An emission nebula is an interstellar cloud emitting in the optical range due to the ionization of its own gas. The gas is ionized in the process of active interaction with young unstable stars.
The active star and its associated nebula, known as NGC 3199, are located at a distance of 12 thousand sv. years in the southern constellation of Kiel. The size of the nebula is 75 light years.
Near the center is the Wolf-Rayet star WR-18 – a massive star with a short life, emitting a powerful stellar wind with a complex structure. It is known that Wolf-Rayet stars create nebulae with interesting shapes when their powerful winds rake the surrounding interstellar matter.
It was assumed that the bright edge testified to the formation of a head shock wave when the star moves through a homogeneous medium, like waves arising near a boat floating on water. However, recent measurements and their analysis have shown that the star is not moving quickly towards the bright edge. Another explanation has been proposed – the matter surrounding the star is not homogeneous, but contains denser clumps near the bright edge.
A neutrino is an elementary particle that has neither charge nor mass. The whole space around us is saturated with them, but they hardly interact with other matters. Therefore, it is extremely difficult to establish their source.
Scientists have studied the results of observing neutrinos in the IceCube detector. They came to the conclusion that some of these particles should be formed during the collision of stellar-mass black holes. Since supermassive representatives of this class of objects were previously among their sources, physicists first proposed their fusion as the main explanation for the observed pattern.
Scientists have suggested that the source of these particles may also be the interactions of objects of stellar mass.
Stellar-mass black holes do merge much more often than supermassive ones. Therefore, they can be a source of high-energy neutrinos, and no contradictions arise. But, as usual, only further observations will be able to confirm or refute this assumption.
Zimbabwe on Monday announced the launch into space of its first nanosatellite, which will collect data to monitor natural disasters, develop agriculture and improve the mapping of minerals.
A rocket carrying a tiny satellite, dubbed SIMSAT-1, has successfully launched from Virginia along with Uganda’s first satellite as part of a multinational project of the Japan Aerospace Exploration Agency (JAXA).
The satellite launch caused a lot of controversy on social media: some hailed the government for this achievement, while others ridiculed its efforts.
“Launching a satellite when the economy is fragile is nonsense. Poverty has increased over the past 5 years. You can’t buy a car when your family is starving,” the commentators shared.
The nebula contains a scattered star cluster and several star-forming regions. The red glow is caused by glowing hydrogen, while the dark fibers are dense streaks of dust. The distance to the object is 5 thousand light years.
The “lagoon” can be seen with binoculars in the constellation Sagittarius. It occupies an area in the sky the size of 3 disks of the Moon.
The LRO mission support group published a picture of the lunar surface. He demonstrates one of the rays surrounding the crater Bruno.
Anyone who has ever looked at the moon using optics has probably paid attention to the characteristic bright rays that stretch from some of its craters. These structures are of shock origin.
When any large celestial body collides with the Moon, it knocks out a large amount of material from under its surface. It flies in all directions, and then falls out, forming secondary craters. Since the dislodged material is generally lighter than the lunar regolith, this leads to the fact that the crater formed as a result of the collision is surrounded by a bright area from which the characteristic rays stretch.
Over time, the dislodged material darkens due to the bombardment of micrometeorites and the effects of cosmic radiation. Therefore, only the “freshest” craters, whose age is no more than a billion years, have radiation systems on the Moon.
Hygeia is the fourth largest object in the asteroid belt after Ceres, Vesta and Pallas. Recently it was discovered that the asteroid has a spherical shape, which means that there is every chance of getting the status of a dwarf planet of the Solar System.
It orbits the Sun, is not a satellite of the planet, has not cleared the vicinity of its orbit from other objects, and now it has become known that this object has such a mass that its own gravity has changed its shape to spherical.
The diameter of the Gigaea turned out to be slightly more than 430 kilometers. This is more than half the size of Ceres, so Hygeia may also become the smallest dwarf planet.
Probably, the Hygeia appeared as a result of a large frontal collision of celestial bodies with a diameter of 75 to 150 kilometers. After the remaining fragments had undergone many collisions with each other, they gave Gigaea its round shape, and also created thousands of asteroids around it.
A new astronomical object was discovered by chance during observations of the red dwarf GJ367. The new exoplanet resembles Mars in size, but it looks like Mercury in metals and appearance.
The planet is located near the Sun, the surface temperature is 1500 degrees, which excludes any form of life. In addition, this planet makes a complete revolution around its star in 8 hours.
The planet was given the name GJ367b. It is 2 times lighter than Earth, but at the same time exceeds Mercury in density. This suggests that 90% of the planet consists of iron.
Albert Einstein
At the beginning of 1920, Einstein was asked what he thought about the idea of the existence of extraterrestrial intelligent life.
Einstein replied as follows: “Earth is not the only place where there is life. Probably, there may be inhabitants on the same Mars or some other objects of the Solar System, but I am not sure that they are intelligent. If we talk about progressive alien beings, then they will not communicate by radio.”
The great physicist of the XX century explained that it is convenient to use radio only at short distances, but if we want to make contact with distant “brothers in mind”, then we must learn to control light streams. So Albert Einstein predicted the creation of a laser.
On May 24, 2023, the private American aerospace company Rocket Lab, using its Electron rocket, will send its own Photon spacecraft to Venus, which will have to collect data on the chemical composition of its atmosphere. The backup launch window will be available in January 2025.
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In October 2023, Photon will enter orbit around Venus, and after that it will drop a 20-kilogram probe into its atmosphere (on the night side), which will have a direct connection with Earth to transmit data received during descent.
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If everything goes according to plan, it will be the first ever private scientific interplanetary mission.
Such close attention to the atmosphere of Venus is due to the fact that in 2020 a large amount of phosphine was found in the upper layers of its atmosphere, a colorless, odorless gas that may indicate the presence of life, since phosphine is produced on Earth by anaerobic ecosystems.
