With increasing numbers satellites In the sky, astronomers have repeatedly expressed concern over how these satellites could affect scientific research and earlier this year.
A review of Hubble Space Telescope observations showed how some images were destroyed by streaks of light from satellites — and while only a small percentage of Hubble images were affected, the authors raised concerns with the number of satellites that will explode over the next decade. The problem can be serious.
Astronomers at the Space Telescope Science Institute (STScI), which now operates Hubble, have come up with a tool to manipulate satellite lines in Hubble images, STScI’s Dave Stark said in a statement.
We have developed a new satellite trajectory instrument, which is superior to previous satellite programs because it is more sensitive. So we think it’s better to find and remove satellite tracks in Hubble images.”
The instrument works by looking for tracks in images from one of Hubble’s cameras, the Advanced Camera for Surveys. This camera has a very wide field of view, which means it can capture a large part of the sky at once. This is useful in this case, because tracks from satellites cross a very small percentage of the image.
Freedom /- There are many reasons why Android users prefer Android phones instead of buying iPhones regardless of price. Here are some common reasons:
Diversity of choices: Android offers a wide variety of smartphones from different manufacturers, which means there are many options at different price points. Users can easily choose the phone that suits their needs and budget.
System Flexibility: The Android system gives users more flexibility to customize and organize their phones according to their individual needs. You can install apps from sources outside of the Google Play Store, change the system interface, and make other changes easier than iOS.
Replacement costs: Android phones are often cheaper than iPhones, meaning it costs less to replace the device if needed.
Accessory support: Android smartphones allow users to use various accessories and add-ons at affordable prices.
User Habit: Simply put, some people have become accustomed to Android, its interface and operating system, so they prefer to stick with it.
Freedom to Customize: Android gives users more freedom to customize their home screen, apps and make UI changes as they wish.
Integration with Google platforms: If you are an active user of Google services like Gmail, Google Drive and Google Photos, Android phones offer better integration with these services.
Of course, choosing between Android and iOS depends on an individual’s personal preferences and needs, and each system has its own advantages and disadvantages. Therefore, the user should select the phone that meets their needs based on what they are looking for.
The evolution of Android and Android devices over the years has seen many changes and improvements. The following points highlight some notable developments and differences between Android and iOS (iPhone systems):
Android: Android is available in various devices made by various companies like Samsung, Google, LG, Huawei etc. This means that there are many options of devices with different budgets and performance. iOS: iOS only comes on Apple iPhones, which means the device’s versatility is limited. Customize the user interface:
Android: Users can further customize the Android interface using launchers and third-party apps to change the look and feel of the system to their liking. iOS: The iOS interface is simple and clean, but offers less flexibility in terms of interface customization than Android. App Store:
Android: Google Play Store has millions of apps and games and developers big and small can publish their apps. iOS: The iOS App Store is known for its security and quality of apps, but imposes more restrictions on app developers and requires strict permissions to publish apps. Service Integration:
Android: Android has good integration with Google services like Gmail, Google Drive, Google Maps and Google Photos. iOS: iOS integration with Apple services such as iCloud, Apple Maps and Apple Music. System Updates:
Android: System updates on Android can be a bit delayed due to changes from different devices and manufacturers, but Google is working to improve this feature through initiatives like Project Treble. iOS: iOS updates are available for all iPhones immediately after launch, meaning security and new features are available quickly. These are some of the key differences between Android and iOS, and the features of both platforms have improved and evolved over the years. Choosing the appropriate system is a personal matter depending on the user’s needs and preferences.
An international team of astronomers has revealed that a strange exoplanet, located 31 light-years from Earth in the Virgo galaxy, is denser than previously thought and a solid ball of metal.
Known as Gliese 367 b, or Tahay, the planet orbits a nearby red dwarf star, and little was known about it until scientists recently decided to delve deeper into the mystery of its mineral composition.
The study, published in The Astrophysical Journal Letters, provides precise measurements of the planet’s mass and radius.
Taihai consists mostly of rock and iron and is about the same size as Earth, allowing it to be captured by current techniques.
“You can compare GJ 367 b to an Earth-like planet whose lithosphere has been stripped away,” lead author Elisa Coffo of the University of Turin told ScienceAlert.
Tahai was first discovered in 2021 by NASA’s Transiting Exoplanet Survey (TESS) Space Telescope system as it orbited its small, faint red dwarf star. Scientists at the time declared it to be a planet with a very short orbit, as it orbited its host star in 7.7 hours, a mysterious and poorly studied category of exoplanets.
Scientists at the time pointed out that Gliese 367 b is a rocky world about 70% the size of Earth and 55% the mass, making it one of the lightest exoplanets known.
But the latest research showed something that shocked scientists, the results found that Dahai is denser than what the 2021 study found.
GJ 367 b is defined as an ultradense exoplanet. According to the new data, the exoplanet has a radius of 70% that of Earth instead of the previously estimated 72%, and its mass is 63% that of Earth instead of 55%.
The team concluded that Dahai’s density is twice that of Earth. The secret is that Taihai may have experienced a cataclysmic event in the past that was mostly made of metal.
According to the study authors, this information can be proven by combining new measurements from TESS and the HARPS spectrometer, which is attached to the European Southern Observatory (ESO) telescope.
Joao suggested that this celestial body had a formation process similar to Earth’s, and that it appeared to have “a dense core composed mainly of iron, surrounded by a silicate-rich mantle”.
Hypotheses about its origin suggest that “a cataclysmic event could tear apart the rocky mantle and empty the planet’s dense core,” the astronomer said. This may have happened due to collisions between GJ 367 b and other protoplanets, stripping off its outer layer. Joao proposed a third theory, in which the planet is believed to have been “born in an iron-rich region of the protoplanetary disk”.
Today, Sunday, the US space agency (NASA) announced the return of a capsule from the OSIRIS-REx mission.(OSIRIS-REx), to Earth with samples of asteroid debris on board; To open the way for scientists to explore the path of evolution of the solar system.
NASA indicated – in a tweet via its official account on the “X” website (formerly Twitter) – that the OSIRIS-REx prototype capsule landed at the Test and Training Field in Utah at exactly 10:52 AM (Eastern US Time). , after traveling 6.21 billion kilometers through space.
NASA noted that the OSIRIS-REx mission was the first US mission to return samples from space to Earth and was the largest space sample ever brought to our planet’s surface, weighing a quarter of a kilogram. This model opens the door to exploring the history and origins of our solar system.
According to US news site Axios, American scientists hope to use high-powered laboratory equipment to study the Bennu asteroid sample. With the aim of learning more about how our solar system has evolved over billions of years.
The “OSIRIS-REx” spacecraft is now on its way to inspect its next target, an asteroid called “Apophis,” the website pointed out, pointing to the spacecraft’s launch in 2016 and receiving samples from “Bennu.” Asteroid in 2020..