More than two weeks after the launch of the James Webb Space Telescope, it has flown over 1,126,540 kilometers from Earth, more than three-quarters of its total path.
Prior to this, JWST had successfully deployed a secondary mirror, which is a key element of its working optics. The space telescope will then deploy the primary mirror segments.
Thanks to images transmitted by the Juno satellite, oceanographers have been able to establish amazing similarities in the movement of water flows in the Earth’s oceans and dense gas flows in the vicinity of Jupiter’s poles.
A team of researchers from the University of California Institute of Oceanography were able to prove that moist convection (when hot, less dense air rises) is responsible for the formation of these atmospheric vortices.
Because clouds on Jupiter form when hot, less dense air rises, the researchers concluded that it is the source of energy to power larger-scale structures, up to polar atmospheric vortices.
The discovery will allow the authors to better understand the energy of our solar system.
During the invasion, the “violator” caused disturbances in the protoplanetary disk of the “victim” and pulled out some of the dust and gas from it, creating an extended tail. The double star Z Canis Major, which was “attacked”, is located at 3750 sv. years from the Earth, and the age is estimated at 300 thousand years.
Similar perturbations seen in its protoplanetary disk have been observed before, but they were likely caused by the components of the evolving system themselves, and not by other stars.
The recorded event made astronomers think about how this interaction could affect the future of the Z Canis Major double star and the formation of planets in its system.
The Tunguska meteorite is a celestial body that fell in Siberia in the Podkamennaya Tunguska valley in 1908. This phenomenon is strange, first of all, because the search expeditions that have repeatedly worked at the crash site since the 1920s have not been able to find the remains of the meteorite itself. All that remained of it was a forest, radially felled by a high-altitude explosion, testimonies of witnesses and seismograms recorded in different countries of the Earth.
A group of scientists tried to estimate the parameters of a celestial body that could produce destruction on the Earth’s surface identical to those observed in 1908 – to knock down and partially char the taiga in an area of 2000 square meters. km. Experts went through about 50 million combinations of the size of the object, the constituent material and the parameters of its entry into the atmosphere. It turned out that the results most similar to the observed reality are obtained by a stone asteroid with a diameter of 50 to 90 meters (164-262 feet), entering the earth’s atmosphere at a speed of 54,000 km/h (34,000 miles/hour).
Having studied data on currently known asteroids whose orbits intersect the earth’s, the researchers came to the conclusion that collisions of the planet with asteroids of similar parameters should statistically be expected no more than once every thousand years.
