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NASA Asteroid Simulation Shows We Cannot Stop Asteroid From Hitting Earth And We Need To Be Better Prepared!


Science
5 hours, 30 minutes
It has recently come to light that a group of experts couldn’t stop a fictitious asteroid from hitting our Earth in a simulation exercise conducted by NASA,
NASA started off with its
7th IAA Planetary Defense conference later last month along with the simulated “tabletop” asteroid impact exercise, led by NASA JPL’s Center for Near-Earth Object Studies (CNEOS). The asteroid impact exercise evolved over the five days of the conference.
Day 1 started with the “discovery” of a fictitious asteroid named 2021PDC and was estimated to be 35 million miles (57 million kilometres) from Earth. Keep in mind that this asteroid is purely fictitious and was only used for the purpose of this exercise. It does not exist and is no threat to Earth. ....

National Near , Near Earth Object Studies , Goldstone Solar System Radar , National Near Earth Object Preparedness Strategy , Action Plan , தேசிய அருகில் , அருகில் பூமி பொருள் ஆய்வுகள் , தங்கக் கல் சூரிய அமைப்பு ரேடார் , தேசிய அருகில் பூமி பொருள் ப்ரிப்யாரெட்நெஸ் மூலோபாயம் , நடவடிக்கை திட்டம் ,

We've measured the size of Venus's planetary core for the first time


Olekcii Mach/Alamy
Venus has a core that is approximately 7000 kilometres in diameter – about the same size as Earth’s – according to the first observation-based estimate.
Jean-Luc Margot at the University of California, Los Angeles, and his colleagues examined Venus from 2006 to 2020, using the Goldstone Solar System Radar in California to hit the planet with radio waves. They then used both this and the Green Bank Telescope some 3000 kilometres away in West Virginia to track the echoes of the waves as they bounced back to Earth, a technique called radar speckle tracking.
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This allowed them to measure very small changes in Venus’s spin and movement. They found the planet’s day, roughly equivalent to 243 Earth days, fluctuated by up to 21 minutes over the 15 years of observation. They also found that the axis of Venus wobbled very slightly in a pattern that their calculations suggest would repeat every 29,000 years. ....

United States , West Virginia , Los Angeles , Olekcii Mach Alamy , Jonathan Ocallaghan , Jean Luc Margot , University Of California , Green Bank Telescope , Luc Margot , Goldstone Solar System Radar , Nature Astronomy , ஒன்றுபட்டது மாநிலங்களில் , மேற்கு வர்ஜீனியா , லாஸ் ஏஞ்சல்ஸ் , ஜீன் லூக் மார்கோட் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , பச்சை வங்கி தொலைநோக்கி , தங்கக் கல் சூரிய அமைப்பு ரேடார் , இயற்கை வானியல் ,