- #1
mersecske
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Which is the asteroid size or mass
which can destroy the Earth totally
(I mean, breaking apart)?
which can destroy the Earth totally
(I mean, breaking apart)?
mersecske said:Back to the asteroids and Earth.
My question is not about real world.
So let's see an imagenary planet, maybe smaller than Earth.
Asteroids usually cause only small demage on the surface,
but a real big one can brake the planet apart.
Maybe the size of the asteroid is comparable to the planet,
but my question is that it can be order of magnitude smaller or not?
mersecske said:What is
"ryan_m_b's binding energy of 2.23e32 J"
?
Vagn said:The binding energy that ryan_m_b talked about before.
The potential energy keeping Earth together is 2.23x1032 joules, which means you fully break Earth apart, you would need to supply that amount of energy to the Earth.
The likelihood of an asteroid destroying Earth is very low. NASA estimates that there is a 1 in 300,000 chance of a catastrophic asteroid strike in any given year. Additionally, NASA and other space agencies have systems in place to detect and track potentially hazardous asteroids, giving us time to develop and implement a plan to mitigate the threat.
Yes, it is possible to prevent an asteroid from destroying Earth. There are several proposed methods for deflecting an asteroid's trajectory, such as using a spacecraft to nudge it off course or detonating a nuclear bomb near it. However, these methods would need to be implemented well in advance of the asteroid's impact and would require significant resources and advanced planning.
The size of an asteroid needed to destroy Earth would vary depending on its composition and velocity. However, scientists estimate that an asteroid would need to be at least 1 kilometer in diameter to cause a global catastrophe. Asteroids of this size are rare and are closely monitored by space agencies.
An asteroid is a small, rocky object that orbits the sun, while a meteor is a small piece of debris that enters Earth's atmosphere. When a meteor enters the Earth's atmosphere, it creates a bright streak of light known as a meteor or shooting star. If the meteor survives its journey through the atmosphere and impacts the Earth's surface, it is then called a meteorite.
If an asteroid were to strike Earth, the effects would vary depending on the size and composition of the asteroid, as well as the location of impact. However, a large enough asteroid could cause widespread destruction and possibly lead to a global extinction event. The impact would also likely cause tsunamis, earthquakes, and other natural disasters, making it crucial to detect and prevent potential asteroid impacts.