Astronomers have discovered more than 30,000 near-Earth asteroids (NEA) in the solar system, which are rocky bodies that revolve around the sun on a path that brings it close to Earth’s orbit.
According to the European Space Agency, there are now a total of 3,039 near-Earth asteroids known to science, and the number is rapidly rising. The agency claims that 1,425 of these asteroids can impact our planet, so they are under the watchful eye of a network of telescopes.
“The good news is that more than half of the near-Earth asteroids known today have been discovered in the past six years, demonstrating how much better our asteroid view has,” said Richard Moisel, head of the agency’s Planetary Defense Division.
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Spotting a gas bubble around the giant black hole in the center of the “Milky Way”
written by Alexandra Hartman Editor-in-Chief
Astronomers have observed the transient appearance of a bubble of gas revolving at “amazing” speeds around the black hole in the center of the galaxy that includes the Earth, according to a scientific study published last Thursday.
The discovery of this bubble, which did not last more than a few hours, provides information regarding the behavior of black holes. What increases the mystery of these astronomical objects is that they are not visible in every sense of the word, as the force of their gravity prevents even light from escaping from them.
The giant black hole “Sagittarius A” located in the center of the Milky Way is regarding 27,000 light-years away from the planet, and it was discovered thanks to the movement of stars that revolve around it. Last May, the IHT International Network of Radio Astronomy Observatories published the first image of the ring of matter that resonates with the black hole before being sucked into it.
The ALMA telescope, one of these observatories located in Chile, detected a “very surprising” signal in the Sagittarius A observation data, astrophysicist Masek Wilgus of Germany’s Max Planck Institute for Radio Astronomy told AFP.
A few minutes before ALMA captured this data, the Chandra Space Telescope detected a “massive emission” of X-rays from Sagittarius A, Wilgus explains.
This burst of energy, thought to be similar to solar storms emanating from the sun, emitted a bubble of gas that passed around the black hole at full speed, according to the study published in the journal Astronomy and Astrophysics.
The phenomenon, which lasted regarding an hour and a half, made it possible to perform calculations that showed that the gas bubble revolved a complete revolution around the black hole in just 70 minutes, and thus at a speed equivalent to 30 percent of the speed of light, which reaches 300,000 kilometers per second, which is an “extraordinary” speed. According to Masek Wilgus.
It is likely that the phenomenon has a magnetic origin, according to the theory explained by the scientist. The black hole’s magnetic field is so strong that it prevents the absorption of a portion of the matter orbiting around it.
However, this accumulation of matter leads to a “burst of flux” that penetrates the magnetic field and releases a burst of energy, in the form of a bubble of gas, according to the astrophysicist.
It is expected that observing these magnetic fields will help in understanding how black holes work, and in showing how quickly these black holes rotate on themselves.
Watch.. Monitoring violations of visual distortion in the cities of the Kingdom using drones
written by Alexandra Hartman Editor-in-Chief
Al-Marsad newspaper: Al-Ekhbariya channel broadcaster, Muhammad bin Saad, revealed that violations of visual distortion in cities will be monitored through “drones” soon.
And he said through his Twitter account that the service will be available and activated following passing the necessary tests and procedures that the city operators and compliance sector is working on in the Ministry of Municipal and Rural Affairs and Housing.
Monitoring violations of visual distortion in cities through “drones” soon.
It will be available and activated following passing the necessary tests and procedures that the City Operators and Compliance Sector is working on in the Ministry of Municipal and Rural Affairs and Housing pic.twitter.com/2Z5TWXduoX
– Mohammed bin Saad (@1mohammed_saad) September 19, 2022
New TCL glasses provide a sense of watching a 140-inch screen
written by Alexandra Hartman Editor-in-Chief
date of publication:
September 02 2022 9:26 GMT
Update date: 02 September 2022 12:00 GMT
The Chinese company TCL presented an improved version of its smart glasses NXTWEAR S, which contains two “micro OLED” panels with a resolution of 1080 pixels, capable of providing the feeling of viewing a 140-inch screen from a distance of four meters.
The Chinese company specialized in electronics, displayed its latest versions during the IFA 2022 exhibition, which is currently being held in Berlin, Germany.
The NXTWEAR S smart glasses allow you to watch content when paired with a compatible device, such as a smartphone, tablet or game console.
In the new version of the glasses, the Chinese company has integrated two Micro OLED screens with a resolution of 1080 pixels, a refresh rate of 60 Hz and a front correction lens.
These updates give the feeling of seeing a 140-inch screen from a distance of four metres.
The glasses have four viewing modes: Animation, Video Games, Movies and Reading.
In addition, the colors of the glasses are expected to be brighter and more vibrant, as well as lower power consumption.
In terms of sound, the glasses include a redesigned speaker system so that the sound is more accurate and clear.
The Chinese company has completely redesigned the controls, while reducing the reliance on the smartphone to perform adjusting volume levels and brightness.
The new glasses feature rotating analog dials at the top of each eyepiece display, with the left wheel controlling volume, and the right wheel controlling brightness and allowing mode change from 2D to 3D.
In terms of accessibility, a new magnetic connector has been added at the back, allowing for more easy connection to other smart devices and computers.
The glasses also come with a USB Type-C port with a built-in display port.
In addition, the reset in the high- and low-frequency audio function, makes prolonged use of the device more comfortable, especially during viewing of long movies.
The NxtWear S wearable display glasses will be available to users by the end of this year, while TCL has put the cost of the latest version at around $700.