As if millions weren’t enough worldly Corpses (Meteorites, asteroids and comets) that revolves around helium And it ends up sometimes a landwe have and space junk endanger our survival.
At the same time, people We’re doing everything we can to disappear We have to manage the feelings that successive crises present to us – with the last crisis Energetic.
In blue are asteroids orbiting near Earth
NASA
If you want to get an idea of what’s being traded above usLook for asteroids. or click on related a tool who presents Jet Propulsion Laboratory From California Institute of Technology. It also has a name. It said eyes on asteroids And of course belongs to NASAWhich took it upon itself to protect the planet from collision with asteroids.
The 1998 The US Congress has ordered the National Aeronautics and Space Administration to find and record 90% of the estimated objects orbiting within one kilometer of Earth within the next decade. The goal was achieved in 2011.
The 2005 Congress has passed another law requiring NASA to find and map at least 90% of the bodies at least 140 meters in size that will approach Earth by 2020. Because of financial issues, only 40% of them were hired.
However, since 2005, a special division has been working – say – at NASA that deals with the defense that humanity can play against meteorites, asteroids and comets.
The program costs US taxpayers $150,000,000 per year.
The amount corresponds to 0.7% of the total budget of NASA and 0.02% of the budget of the US Department of Defense (700 billion).
As of 9/18/2022, astronomers have observed 29,724 near-Earth asteroids. who are they 10,189 Diameter not less than 40 meters and 855 It’s at least one kilometer.
In the meantime, about 30 new bodies are added to the database every week.
Size matters – to our lives
as you write Sufeila bin Ishaq (Assistant Professor of Aerospace and International Relations at Air University, USA), in conversation “Astronomers consider a near-Earth object to be a threat if it is located within 7.4 million kilometers of the planet and has a diameter of at least 140 meters.
If a celestial body of this size entered the Earth’s atmosphere, it could destroy an entire city and destroy everything in the surrounding area.
Objects larger (more than 1 kilometer) can have global effects – even causing mass extinctions“.
Smaller cosmic objects can also cause damage.
A body explosion in 1908 50 meters above the Podkamenaya Tunguska River in Siberia flattened more than 80 million trees over an area of 2,100 square kilometers.
In 2013, an asteroid with a diameter of 20 meters exploded in the Earth’s atmosphere at an altitude of 32 kilometers above Chelyabinsk, and Russia released an energy equivalent to 30 Hiroshima bombs. About 1,100 people were injured and the damage amounted to 33 million euros.
A so-called “city killer” asteroid the size of a US football field passed less than 72,420 kilometers from Earth in 2019. The same thing happened in 2021, with asteroids the size of a private jet and another kilometer in diameter.
The next real threat to EarthThat is, the next important asteroid that can “find” us is 2005 ED224 with a length of 50 meters. You will pass by us on 3/11/2023. The odds of impact are one in 500,000. You don’t say them much. But it is good that we have taken our measures.
Surprises that no one likes
Scientists have concluded that the Earth’s rotation creates a blind spot in tracking cosmic bodies, so some seemingly constant remain hidden. “This can develop into a problem, as we cannot prepare for surprises. Indication, in 2008, astronomers discovered a small asteroid only 19 hours before it fell in the territory of Sudan.
An asteroid with a diameter of 2 km was recently discovered that was hidden until now. Fact indicating that there are still large bodies that have not been revealed“.
check, check
In early December 2021, NASA sent a mission to see if it could change the orbit of an asteroid to see if it could save Earth if the need arises.
On September 26, an attempt will be made to change course.
The goal of the first test of our planet’s defense system
NASA
NASA will crash an unmanned spacecraft weighing 610 kg and speeding 22,500 km per hour, the large binary asteroid moon Gemini called Demorphos. It does not threaten us, but somehow it is necessary to check what the service has created. This will also be the completion of the first full-scale planetary defense mission.
It has been called the Double Asteroid Redirection Test (in short, ArrowThere will be a live photo on social media with the hashtag #DARTMission. The LICACube satellite was set up to be up close and send images of the process back to Earth.
A follow-up mission by the European Space Agency (HERA), it will launch in 2024 and will meet with Gemini in 2026 to begin collecting data.
Those who “made” Earth’s defenses in cosmic bodies, were also told that they would need Five to 10 years of preparationSo that we are prepared for any eventuality.
DART is the first attempt to deflect a large asteroid, but it’s not the first time we’ve sent something into a cosmic object. Deep Space Impact dismantled a comet in 2005, with the goal of collecting scientific measurements. In 2018, the Japanese collected samples of asteroids and took them back to Earth for study.
Mayday, mayday
Once astronomers discover a dangerous object, they have four methods available to mitigate the consequences.
- Regional first aid and evacuation procedures.
- Sending a spacecraft to fly near a small or medium-sized asteroid, where gravity changes the course of the threat.
- If the asteroid is large, there is a possibility that NASA will send a spacecraft to it at high speed
- Or launch a nuclear warhead.
If you still feel insecure, I’d like you to know it from 2026 Earth will also have an infrared telescope in its defense system (NEO . Surveyor) that will be launched into space and will carry out the mission of searching for potentially dangerous asteroids.
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