What is an asteroid, exactly?
An asteroid is a small, rocky or metallic object orbiting the Sun. They are now usually defined as being larger than 1 meter in diameter with objects smaller than that being called meteoroids. The largest asteroid is Ceres at 965 km (600 mi) diameter. Most asteroids, including Ceres, are located in the asteroid belt between Mars and Jupiter, but some asteroids come near to or cross Earth’s orbit. There are several related terms that come up when talking about things hitting Earth, so here are some related definitions:
What is a comet?
A comet is a small, icy/dusty object orbiting the Sun. Comets formed in the outer solar system where ice is stable. Most of them spend most of their time far beyond the orbit of Neptune, and all spend most of their time beyond Jupiter. But some have orbits that bring them occasionally through the inner solar system including sometimes past Earth’s orbit. When they are in the inner solar system, their ice sublimates (goes from ice to gas), kicking off dust and forming the coma and tails they are famous for.
What is a meteoroid?
A meteoroid is a rocky or metallic object in space that is smaller than an asteroid, the boundary usually being defined as 1 meter diameter. Very tiny meteoroids, smaller than 1 gram or so are often called micrometeoroids or space dust.
What is a meteor?
A meteor is the streak of light that occurs when an object (e.g., asteroid or meteoroid) hits the Earth’s atmosphere at high speed causing the object to heat up and glow.
What is a meteorite?
If part of a meteoroid, asteroid, or comet makes it to the ground, it is called a meteorite.
How do asteroids form? Where do asteroids come from?
Asteroids are typically material left over from the period of planetary formation 4.5 billion years ago, the stuff left over that didn’t form into planets in the inner solar system. Often they are fragments of collisions between asteroids in the past.
How many near-Earth asteroids are there?
Using the cut-off for asteroid diameter of 1 meter, there are estimated to be more than half a billion near-Earth asteroids. For objects that cause major damage if they hit Earth (larger than about 30 meters), there are about a million. So far, we are approaching 20,000 found. It is easier to find larger objects, so we think we have found more than 90% of the asteroids 1 km and above, but for smaller asteroids still capable of causing major regional damage, we have only found a small percentage.
Are there any asteroids heading for Earth?
There are a few asteroids that currently are known to have a low probability of hitting Earth in tens to hundreds of years. For example, one of the highest probabilities currently is an approximately 37 meter diameter asteroid called 2000 SG344 that has a 1 in 1100 chance of impact in 2071. But these always are based on asteroid observations that have uncertainties in them. Usually, as more observations are obtained, the impact probability will drop to 0; in other words we know it won’t hit. JPL keeps an online list of all asteroids with any probability of hitting Earth. The big uncertainty is that we haven’t discovered most of near Earth asteroids yet, so we don’t know if they are on a collision course with Earth, which is why finding and tracking them is crucial.
Why do asteroids hit Earth?
Space is really empty and big, but there is also a lot of stuff out there, and Earth is a big target with big gravity, so things run into Earth or Earth runs into them.
Marshall Masters is convinced we’re already seeing the effects of Nibiru’s passage, with increased meteors and superbolides coming close to Earth, such as the damaging 2013 incident in Chelyabinsk, Russia, when an object hit the atmosphere. He believes there is a high probability for another such incident. What do you believe about Planet X?
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NASA asteroid WARNING: Giant 269 foot asteroid on ‘Earth Close Approach’
A GIANT asteroid standing taller than the Leaning Tower of Pisa will dash past the Earth, NASA’s asteroid trackers have revealed.
The imposing asteroid, dubbed by NASA Asteroid 2019 AR2, will make a so-called “Earth Close Approach”. Asteroid orbit calculations predict the space rock will reach its closest distance to Earth in just a few hours. NASA’s Jet Propulsion Laboratory (JPL) expects Asteroid AR2 will swing by around 2.28pm on , April 13. The unexpected flyby comes just 10 days after the barreling space rock was first detected by NASA’s radars on April 3.
There are three other little-known asteroids on NASA’s radar which could potentially come closer than 2015 EG – 2012 KT12, 2016 NO56 and 2016 GE1 – but they’re more likely to zip by about 1 or 2 million kilometres away.
While that sounds far, considering the Earth is 150 million kilometres from the sun, it’s close by galactic standards.
The uncertainty stems from the fact tiny asteroids flying through distant space are hard to track, and astronomers often have little data to work with.
Already this year there have been two close calls with previously unknown asteroids – 2019 AS5 and 2019 AE9 – the former missing by just 15,000km, about the same distance from Christchurch to Boston.
And during today’s flyby, the asteroid is estimated to dash past the Earth at breakneck speeds of more than 10,780mph (4.82km per second).
Thankfully NASA does not expect the space rock to slam into the Earth anytime soon.
Tens of thousands of asteroids hit the Earth every year, but the vast majority are small and harmlessly burn up in the atmosphere.
NASA measures an asteroid’s risk to civilisation on the Torino scale – zero means no risk at all, while 10 equals “global climatic catastrophe that may threaten the future of civilization as we know it”. It’s a combination of an asteroid’s size, speed, composition and its likelihood of hitting the planet.
Presently, there are no objects rated above a zero. The highest rating ever given was to a 350m-wide asteroid named Apophis, which was downgraded to zero in 2006 when astronomers calculated a possible 2029 impact wasn’t going to happen.
But the asteroid is large enough and will swing by close enough for NASA to pay close attention to its journey around the solar system.
HOW TO START A HIGH-PERFORMANCE HOMESTEAD FROM THE GROUND UP…
Homesteading is the only (legal) way I know of to become almost completely self-reliant from the food corporations, the utilities companies, the Government and Big Pharma… by harvesting hundreds upon hundreds of dolars of organic food year-round, and collecting thousands of gallons of crystal-clear drinking water for free…
To take back your health by growing your own groceries, and making your own food out of basic ingredients, such as cheese, bread and even chocolate to name a few…
Then you could stockpile the excess produce for dark days… (The shelf life of ingredients is longer than that of the resulting foods, anyway…) So while other preppers pay thousands for overpriced, highly-processed “emergency food”, you’ll build your survival stockpile for free…
It’ll be like having your own personal supermarket just a few feet away from you… Though not the kind that sells processed meat full of hormones and steroids, veggies full of pesticides that have absolutely no taste at all, not to mention and all the other junk full of preservatives…
Books can be your best pre-collapse investment.
Carnivore’s Bible (is a wellknown meat processor providing custom meat processing services locally andacross the state of Montana and more. Whether your needs are for domestic meator wild game meat processing)
The Lost Book of Remedies PDF ( contains a series of medicinal andherbal recipes to make home made remedies from medicinal plants and herbs.Chromic diseases and maladies can be overcome by taking the remediesoutlined in this book. The writer claims that his grandfather was taughtherbalism and healing whilst in active service during world war twoand that he has treated many soldiers with his home made cures. )
Easy Cellar(Info about building and managing your root cellar, plus printable plans. The book on building and using root cellars – The Complete Root Cellar Book.)
The Lost Ways (Learn the long forgotten secrets that helped our forefathers survive famines,wars,economic crisis and anything else life threw at them)
LOST WAYS 2 ( Wordof the day: Prepare! And do it the old fashion way, like our fore-fathers did it and succeed longbefore us,because what lies ahead of us will require all the help we can get. Watch this video and learn the 3 skills that ensured our ancestors survival in hard times offamine and war.)
Survival MD (Best Post Collapse First Aid Survival Guide Ever)
Conquering the coming collapse (Financial advice and preparedness )
Liberty Generator (Build and make your own energy source)
Backyard Liberty (Easy and cheap DIY Aquaponic system to grow your organic and living food bank)
Bullet Proof Home (A Prepper’s Guide in Safeguarding a Home )
Family Self Defense (Best Self Defense Strategies For You And Your Family)
Survive Any Crisis (Best Items To Hoard For A Long Term Crisis)
Survive The End Days(Biggest Cover Up Of Our President)
Drought USA(Discover The Amazing Device That Turns Air Into Water)