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Krishna Kumar Prajapati
Author
What are the potential risks and hazards associated with near-Earth asteroids?
in General Discussion
Near-Earth asteroids present risks and hazards to our planet, including the possibility of collision, airbursts, shock waves, tsunamis, flooding, atmospheric effects, and regional consequences. Collisions can cause widespread destruction and loss of life, while airbursts and shock waves from smaller
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Jul 15, 2023
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Krishna Kumar Prajapati
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How do scientists study asteroids and gather information about their composition and properties?
in General Discussion
Scientists use various methods to study asteroids and gather information about their composition and properties. These methods include observations from Earth using telescopes to analyze light across different wavelengths, spectroscopy to identify elements and compounds present on asteroids, spacecr
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Jul 15, 2023
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Krishna Kumar Prajapati
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What are the different types of asteroids and what are their characteristics?
in General Discussion
Asteroids are categorized into different types based on their composition and characteristics. C-type asteroids are carbonaceous and rich in carbon compounds, silicates, and water. S-type asteroids are silicate-rich and have reflective surfaces. M-type asteroids are metallic, primarily composed of n
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Jul 15, 2023
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Krishna Kumar Prajapati
Author
What are asteroids and what is their composition?
in General Discussion
Asteroids are small celestial bodies found primarily in the asteroid belt between Mars and Jupiter. They offer important information about the early Solar System and its formation. Asteroids are composed of rock, metal, and sometimes ice. There are three main types based on composition: C-type (carb
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Jul 15, 2023
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Krishna Kumar Prajapati
Author
What are pulsars and Pulsar Timing Array?
in General Discussion
Pulsars are highly magnetized, rapidly rotating neutron stars that emit beams of electromagnetic radiation. They provide valuable insights into astrophysical phenomena and are used to study stellar evolution, extreme matter conditions, and strong magnetic fields. Pulsar Timing Arrays (PTAs) utilize
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Jul 15, 2023
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Krishna Kumar Prajapati
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How do asteroids impact the Earth and what are the consequences of asteroid impacts?
in General Discussion
Asteroid collisions with Earth can have significant impacts, including the formation of craters, shock waves, and airbursts. Tsunamis and flooding can occur if an asteroid lands in water. Large impacts can also cause global climate effects and disrupt the environment, potentially leading to mass ext
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Jul 15, 2023
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Krishna Kumar Prajapati
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What are the implications of asteroid mining and potential resources that can be extracted from asteroids?
in General Discussion
Asteroid mining has the potential to revolutionize resource acquisition by accessing valuable materials that are scarce on Earth. This includes rare metals, water, precious and industrial metals, fuel resources, and scientific knowledge about the early solar system. However, there are challenges to
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Jul 15, 2023
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Krishna Kumar Prajapati
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What is the asteroid belt and where is it located in the Solar System?
in General Discussion
The asteroid belt is a region located between Mars and Jupiter in the Solar System. It consists of small rocky objects called asteroids that orbit the Sun. These asteroids are remnants from the early Solar System and represent material that didn't form into a planet due to Jupiter's gravitational in
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Jul 15, 2023
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Krishna Kumar Prajapati
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What is the size range of asteroids and how does their size affect their behavior?
in General Discussion
Asteroids come in a wide range of sizes, from small fragments to large bodies spanning hundreds of kilometers. Smaller asteroids burn up in the atmosphere and rarely reach the Earth's surface. Medium-sized asteroids may break apart, causing airbursts or reaching the surface as meteorites. Large aste
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Jul 15, 2023
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Krishna Kumar Prajapati
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How do asteroids form and evolve in the Solar System?
in General Discussion
Asteroids form from dust particles in the protoplanetary disk, growing into planetesimals through collisions. They accrete more material to become asteroids. Their evolution is influenced by gravitational interactions, causing orbit disturbances and potential hazard as near-Earth objects. Collisions
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Jul 15, 2023
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Krishna Kumar Prajapati
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What is "humming" in the context of gravitational waves?
in General Discussion
In the context of gravitational waves, "humming" refers to a characteristic pattern observed in the waveforms. Gravitational waves are ripples in spacetime caused by astrophysical events. The "humming" describes the repetitive oscillations present in the waveform and contains information about the s
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Jul 15, 2023
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Krishna Kumar Prajapati
Author
Where do gravitational waves come from?
in General Discussion
Gravitational waves are generated by the motion or acceleration of massive objects. They originate from various astrophysical events, including binary systems, black hole mergers, neutron star collisions, supernovae, and cosmic inflation. These events create ripples in spacetime, carrying informatio
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Jul 15, 2023
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Krishna Kumar Prajapati
Author
What are the current techniques and technologies used for asteroid detection and monitoring?
in General Discussion
Astronomers use a range of techniques and technologies to detect and monitor asteroids for potential threats to Earth. Ground-based telescopes, radar imaging, space-based telescopes, infrared surveys, and space missions are employed to identify and track asteroids. Data sharing and collaboration amo
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Jul 15, 2023
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Asheesh Maurya
Author
Leading Chinese officials hailed the "miracle" of zero-covid reversal
in General Discussion
Beijing: According to state media, China's senior authorities today praised the "miracle" of the nation's zero-Covid reversal, describing the sudden shift away from strict antiviral limits as "absolutely proper" and a "huge decisive triumph." Once the government eliminated some of the strictest viru
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Feb 16, 2023
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